45 results on '"Vaudour, Emmanuelle"'
Search Results
2. Temporal mosaicking approaches of Sentinel-2 images for extending topsoil organic carbon content mapping in croplands
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Vaudour, Emmanuelle, Gomez, Cécile, Lagacherie, Philippe, Loiseau, Thomas, Baghdadi, Nicolas, Urbina-Salazar, Diego, Loubet, Benjamin, and Arrouays, Dominique
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- 2021
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3. Retrieving Soil Moisture from Sentinel-1: Limitations over Certain Crops and Sensitivity to the First Soil Thin Layer
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Bazzi, Hassan, primary, Baghdadi, Nicolas, additional, Nino, Pasquale, additional, Napoli, Rosario, additional, Najem, Sami, additional, Zribi, Mehrez, additional, and Vaudour, Emmanuelle, additional
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- 2023
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4. Assessing the capability of Sentinel-2 time-series to estimate soil organic carbon and clay content at local scale in croplands
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Castaldi, Fabio, Halil Koparan, Muhammed, Wetterlind, Johanna, Žydelis, Renaldas, Vinci, Ialina, Özge Savaş, Ayşe, Kıvrak, Cantekin, Tunçay, Tülay, Volungevičius, Jonas, Obber, Silvia, Ragazzi, Francesca, Malo, Douglas, Vaudour, Emmanuelle, Institute for BioEconomy [Sesto Fiorentino] (IBE | CNR), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Soil, Fertilizer and Water Resources Central Research Institute, Swedish University of Agricultural Sciences (SLU), Lithuanian Research Centre for Agriculture and Forestry, Regional Agency for Environmental Prevention and Protection of the Veneto (ARPAV), Atatürk Soil Water and Agricultural Meteorology Research Institute, South Dakota State University (SDSTATE), Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS), AgroParisTech-Université Paris-Saclay-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), elsevier, and European Project: 862695,H2020,H2020-SFS-2019-1,EJP SOIL(2020)
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Soil organic carbon ,Uncertainty ,[SDV.SA.AGRO]Life Sciences [q-bio]/Agricultural sciences/Agronomy ,[SHS.GEO]Humanities and Social Sciences/Geography ,[SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study ,Atomic and Molecular Physics, and Optics ,Computer Science Applications ,Sentinel2 ,[SDE]Environmental Sciences ,Local scale ,Clay ,Time-series ,Temporal mosaics ,Computers in Earth Sciences ,Engineering (miscellaneous) - Abstract
International audience; The use of remote sensing data methods is affordable for the mapping of soil properties of the plowed layer over croplands. Carried out in the framework of the ongoing STEROPES project of the European Joint H2020 Program SOIL, this work is focused on the feasibility of Sentinel-2 based approaches for the high resolution mapping of topsoil clay and organic carbon (SOC) contents at the within-farm or within-field scales, for cropland sites of contrasted climates and soil types across the Northern hemisphere. Four pixelwise temporal mosaicking methods, using a two years-Sentinel-2 time series and several spectral indices (NDVI, NBR2, BSI, S2WI), were developed and compared for i) pure bare soil condition (maxBSI), ii) driest soil condition (minS2WI), iii) average bare soil condition (Median) and iv) dry soil conditions excluding extreme reflectance values (R90). Three spectral modeling approaches, using the Sentinel-2 bands of the output temporal mosaics as covariates, were tested and compared: (i) Quantile Regression Forest (QRF) algorithm; (ii) QRF adding longitude and latitude as covariates (QRFxy); (iii) a hybrid approach, Linear Mixed Effect Model (LMEM), that includes spatial autocorrelation of the soil properties. We tested pairs of mosaic and spectral approaches on ten sites in Türkiye, Italy, Lithuania, and USA where soil samples were collected and SOC and clay content were measured in the lab. The average RPIQ of the best performances among the test sites was 2.50 both for SOC (RMSE = 0.15%) and clay (RMSE = 3.3%). Both accuracy level and uncertainty were mainly influenced by site characteristics of cloud frequency, soil types and management. Generally, the models including a spatial component (QRFxy and LMEM) were the best performing, while the best spatial mosaicking approaches mostly were Median and R90. The most frequent optimal combination of mosaicking and model type was Median or R90 and QRFxy for SOC, and R90 and LMEM for clay estimation.
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- 2023
5. Retrieving Soil Moisture from Sentinel-1: Limitations over Certain Crops and Sensitivity to the First Soil Thin Layer.
- Author
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Bazzi, Hassan, Baghdadi, Nicolas, Nino, Pasquale, Napoli, Rosario, Najem, Sami, Zribi, Mehrez, and Vaudour, Emmanuelle
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SOIL moisture ,COVER crops ,SOIL moisture measurement ,NORMALIZED difference vegetation index ,CROPS ,GROUND vegetation cover - Abstract
This paper presents a comparison between the Sentinel-1 (S1)/Sentinel-2 (S2)-derived soil moisture products at plot scale (S
2 MP) and in situ soil moisture measurements at a 10 cm depth for several winter and summer crops. Specifically, the paper discusses the consistency between the in situ soil moisture measurements, usually performed at a 10 cm soil depth, and the variable S1 C-band penetration depth in soil due to soil humidity conditions, vegetation development and S1 acquisition configuration. The aim is to provide end users with the strength and limitations of S1-derived soil moisture, mainly the S2 MP soil moisture product, for their further applications. Both the estimated and measured soil moisture (SM) were evaluated over three testing fields in a Mediterranean climatic context, with crop cycles including wheat, tomato, cover crops and soybeans. The main results showed that the comparison between the S2 MP-estimated SM based on S1 backscattering (at ~5 cm depth) with a 10 cm in situ SM is not always relevant during the crop cycle. In dry conditions, the S1 SM significantly underestimated the 10 cm SM measurements with an underestimation that could reach around 20 vol.% in some extremely dry conditions. This high underestimation was mainly due to the difference between the topsoil SM captured by the S1 sensor and the 10 cm in depth SM. Moderately wet conditions due to rainfall or irrigation showed less of a difference between the S1-estimated SM and the 10 cm in situ SM and varying between −10 and −5 vol.% due to the homogeneity of the SM at different soil depths. For extremely wet conditions, the S1 SM started to underestimate the SM values with an underestimation that can reach an order of −10 vol.%. A comparison of the S1-estimated SM as a function of the vegetation development showed that, for the studied crop types, the S1 SM estimates are only valid for low and moderate vegetation cover with a Normalized Difference Vegetation Index (NDVI) of less than 0.7. For dense vegetation cover (NDVI > 0.7), overestimations of the SM (average bias of about 4 vol.%) are mainly observed for developed tomato and soybean crops due to fruits' emergence, whereas an extreme underestimation (average bias reaching −15.5 vol.%) is found for developed wheat cover due to the vertical structure of the wheat kernels. The results also suggest that the optimal SM estimations by S1 could be mainly obtained at low radar incidence angles (incidence angle less than 35°). [ABSTRACT FROM AUTHOR]- Published
- 2024
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6. Using Machine-Learning Algorithms to Predict Soil Organic Carbon Content from Combined Remote Sensing Imagery and Laboratory Vis-NIR Spectral Datasets
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Zayani, Hayfa, primary, Fouad, Youssef, additional, Michot, Didier, additional, Kassouk, Zeineb, additional, Baghdadi, Nicolas, additional, Vaudour, Emmanuelle, additional, Lili-Chabaane, Zohra, additional, and Walter, Christian, additional
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- 2023
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7. Sentinel-2 satellite images for monitoring cattle slurry and digestate spreading on emerging wheat crop: a field spectroscopy experiment
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Dodin, Maxence, primary, Levavasseur, Florent, additional, Savoie, Antoine, additional, Martin, Lucie, additional, Foulon, Jean, additional, and Vaudour, Emmanuelle, additional
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- 2023
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8. Remote Sensing Data for Digital Soil Mapping in French Research—A Review
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Richer-de-Forges, Anne C., primary, Chen, Qianqian, additional, Baghdadi, Nicolas, additional, Chen, Songchao, additional, Gomez, Cécile, additional, Jacquemoud, Stéphane, additional, Martelet, Guillaume, additional, Mulder, Vera L., additional, Urbina-Salazar, Diego, additional, Vaudour, Emmanuelle, additional, Weiss, Marie, additional, Wigneron, Jean-Pierre, additional, and Arrouays, Dominique, additional
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- 2023
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9. Sentinel-2 and Sentinel-1 Bare Soil Temporal Mosaics of 6-year Periods for Soil Organic Carbon Content Mapping in Central France
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Urbina-Salazar, Diego, primary, Vaudour, Emmanuelle, additional, Richer-de-Forges, Anne C., additional, Chen, Songchao, additional, Martelet, Guillaume, additional, Baghdadi, Nicolas, additional, and Arrouays, Dominique, additional
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- 2023
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10. BIODIVERSITY – A new space mission to monitor Earth ecosystems at fine scale
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BRIOTTET, Xavier, primary, BAJJOUK, Touria, additional, CHAMI, Malik, additional, DELACOURT, Christophe, additional, FERET, Jean-Baptiste, additional, JACQUEMOUD, Stephane, additional, MINGHELLI, Audrey, additional, SHEEREN, David, additional, WEBER, Christiane, additional, FABRE, Sophie, additional, ADELINE, Karine, additional, VAUDOUR, Emmanuelle, additional, LUQUE, Sandra, additional, DEVILLE, Yannick, additional, SOUDANI, Kamel, additional, and VERPOOTER, Charles, additional
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- 2022
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11. BIODIVERSITY – Une Nouvelle Mission Spatiale Pour Le Suivi Des Ecosystèmes A Une Echelle Fine
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Briottet, Xavier, Bajjouk, Touria, Chami, Malik, Delacourt, Christophe, Feret, Jean-baptiste, Jacquemoud, Stephane, Minghelli, Audrey, Sheeren, David, Weber, Christiane, Fabre, Sophie, Adeline, Karine, Vaudour, Emmanuelle, Luque, Sandra, Deville, Yannick, Soudani, Kamel, and Verpooter, Charles
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critical zone ,zone critique ,milieu urbain ,imaging spectroscopy ,space mission ,biodiversité ,coastal ecosystems ,écosystèmes côtiers ,hyperspectral ,vegetation ,mission spatiale ,soil quality ,imagerie hyperspectrale ,végétation ,qualité des sols ,biodiversity ,urban area - Abstract
Imaging spectroscopy has demonstrated its interest in characterizing the biochemical, biophysical and structural properties of vegetation, natural and agricultural soils, as well as artificial surfaces. Following the Hyperion mission, new space missions have emerged (PRISMA, EnMap), or are under study (CHIME, SBG). However, one of their main limitations lies in their spatial resolution that induces a large number of mixed pixels reducing their potential for discrimination for very heterogeneous areas. The BIODIVERSITY mission aims to complement these space missions with better GSD acquisitions (typically 8-10 m) with a 5-day revisit on targeted reference sites with identified and well-located characteristics. It will thus make it possible, in particular, to answer two scientific issues that will design the instrument. The first issue concerns the spatial and temporal distribution of vegetation traits in species assemblages; these traits are associated with the resilience of terrestrial ecosystems, anthropogenic influences, and the biodiversity of ecosystems in terms of species composition and assemblages. The second issue relates to improving our knowledge of coastal areas and inland waters in terms of biodiversity, water quality and bathymetry, in order to assess the impact of human activity on their ecosytems. The scientific challenges as well as the user requirements for such a mission are presented for each application., L’imagerie hyperspectrale a démontré son intérêt pour la caractérisation des propriétés biochimiques, biophysiques et structurelles de la végétation, des sols naturels et agricoles ainsi que des surfaces artificialisées. A la suite de la mission Hyperion, de nouvelles missions spatiales ont vu le jour (PRISMA, EnMAP), ou sont en phase d’étude (SBG, CHIME). Ces spectro-imageurs ont une résolution spatiale au sol de l’ordre de 30 m, un large champ de vue et peuvent couvrir de vastes zones du globe terrestre afin de caractériser les écosystèmes terrestres et océaniques avec un temps de revisite variant de 4 à 16 jours. Néanmoins, leur résolution spatiale est limitée ce qui induit un nombre important de pixels mixtes réduisant leur potentiel de discrimination pour des zones hétérogènes. La mission BIODIVERSITY a pour objectif de compléter ces missions par des acquisitions de meilleure résolution spatiale (typiquement 8-10 m) avec une revisite de l’ordre de 5 jours sur des sites de référence ciblés possédant des caractéristiques identifiées et bien localisées. Elle permettra ainsi de répondre à deux problématiques scientifiques qui vont dimensionner l’instrument. La première problématique porte sur la distribution spatiale et temporelle des traits de la végétation dans les assemblages d’espèces ; ces traits sont associés à la résilience des écosystèmes terrestres, aux influences anthropiques et à la biodiversité des écosystèmes en termes de composition et d’assemblages en espèces. La seconde problématique porte sur l’amélioration de nos connaissances des zones côtières et des eaux continentales en termes de biodiversité, de qualité des eaux et de bathymétrie, pour ensuite évaluer l’impact de l’activité anthropique sur leurs écosystèmes. Enfin, ces deux applications qui déterminent les spécifications de l’instrument seront complétées par l’étude, à fine résolution spatiale, de l’impact des pratiques de gestion des sols dans un processus environnemental tels que le stockage du carbone dans les sols, l’infiltration et la rétention d’eau en surface ou l’érosion des sols. Elles ouvrent également de nouvelles voies pour évaluer comment les matériaux urbains influencent notre environnement proche et pour caractériser les pollutions urbaine et industrielle. Les défis scientifiques ainsi que les exigences-utilisateurs pour une telle mission sont présentés pour chaque application.
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- 2022
12. Satellite Imagery to Map Topsoil Organic Carbon Content over Cultivated Areas: An Overview
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Vaudour, Emmanuelle, primary, Gholizadeh, Asa, additional, Castaldi, Fabio, additional, Saberioon, Mohammadmehdi, additional, Borůvka, Luboš, additional, Urbina-Salazar, Diego, additional, Fouad, Youssef, additional, Arrouays, Dominique, additional, Richer-de-Forges, Anne C., additional, Biney, James, additional, Wetterlind, Johanna, additional, and Van Wesemael, Bas, additional
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- 2022
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13. The Theia 'Digital Soil Mapping' Scientific Expertise Centre of France
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Richer-De-Forges, Anne C, Lagacherie, Philippe, Arrouays, Dominique, Bialkowski, Anne, Bourennane, Hocine, Briottet, Xavier, Fouad, Youssef, Gomez, Cécile, Jacquemoud, Stéphane, Lemercier, Blandine, Maisongrande, Philippe, Martelet, Guillaume, Martin, Manuel P, Michot, Didier, Pichelin, Pascal, Saby, Nicolas P. A., Tissoux, Hélène, Vaudour, Emmanuelle, Wadoux, Alexandre M.J.-C., Walter, Christian, Puissant, Anne, Richer-de-Forges, Anne, InfoSol (InfoSol), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Laboratoire d'étude des Interactions Sol - Agrosystème - Hydrosystème (UMR LISAH), Institut de Recherche pour le Développement (IRD)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Bureau de Recherches Géologiques et Minières (BRGM) (BRGM), Unité de Science du Sol (Orléans) (URSols), ONERA / DOTA, Université de Toulouse [Toulouse], ONERA-PRES Université de Toulouse, Sol Agro et hydrosystème Spatialisation (SAS), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Rennes Angers, Indo-French Cell for Water Sciences (IFCWS), Indian Institute of Science [Bangalore] (IISc Bangalore), Institut de Physique du Globe de Paris (IPGP (UMR_7154)), Institut national des sciences de l'Univers (INSU - CNRS)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Centre National d'Études Spatiales [Toulouse] (CNES), Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS), AgroParisTech-Université Paris-Saclay-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Laboratoire Image, Ville, Environnement (LIVE), and Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)
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[SDU.STU] Sciences of the Universe [physics]/Earth Sciences ,[SDU.STU]Sciences of the Universe [physics]/Earth Sciences - Abstract
International audience; pas de résumé
- Published
- 2022
14. Using Sentinel-2 Images for Soil Organic Carbon Content Mapping in Croplands of Southwestern France. The Usefulness of Sentinel-1/2 Derived Moisture Maps and Mismatches between Sentinel Images and Sampling Dates
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Urbina-Salazar, Diego, Vaudour, Emmanuelle, Baghdadi, Nicolas, Ceschia, Eric, Richer-de-Forges, Anne, Lehmann, Sébastien, Arrouays, Dominique, Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS), AgroParisTech-Université Paris-Saclay-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), InfoSol (InfoSol), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Territoires, Environnement, Télédétection et Information Spatiale (UMR TETIS), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-AgroParisTech-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Centre d'études spatiales de la biosphère (CESBIO), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), and Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)
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soil organic carbon ,southwestern france ,topographic wetness index ,Science ,sentinel-2 ,digital soil mapping ,[SDU.STU]Sciences of the Universe [physics]/Earth Sciences ,soil moisture ,croplands ,slaking crust sensitivity index - Abstract
International audience; In agronomy, soil organic carbon (SOC) content is important for the development and growth of crops. From an environmental monitoring viewpoint, SOC sequestration is essential for mitigating the emission of greenhouse gases into the atmosphere. SOC dynamics in cropland soils should be further studied through various approaches including remote sensing. In order to predict SOC content over croplands in southwestern France (area of 22,177 km²), this study addresses (i) the influence of the dates on which Sentinel-2 (S2) images were acquired in the springs of 2017–2018 as well as the influence of the soil sampling period of a set of samples collected between 2005 and 2018, (ii) the use of soil moisture products (SMPs) derived from Sentinel-1/2 satellites to analyze the influence of surface soil moisture on model performance when included as a covariate, and (iii) whether the spatial distribution of SOC as mapped using S2 is related to terrain-derived attributes. The influences of S2 image dates and soil sampling periods were analyzed for bare topsoil. The dates of the S2 images with the best performance (RPD ≥ 1.7) were 6 April and 26 May 2017, using soil samples collected between 2016 and 2018. The soil sampling dates were also analyzed using SMP values. Soil moisture values were extracted for each sample and integrated into partial least squares regression (PLSR) models. The use of soil moisture as a covariate had no effect on the prediction performance of the models; however, SMP values were used to select the driest dates, effectively mapping topsoil organic carbon. S2 was able to predict high SOC contents in the specific soil types located on the old terraces (mesas) shaped by rivers flowing from the southwestern Pyrénées.
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- 2021
15. Potential of Sentinel-2 Satellite Images for Monitoring Green Waste Compost and Manure Amendments in Temperate Cropland
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Dodin, Maxence, Smith, Hunter D., Levavasseur, Florent, Hadjar, Dalila, Houot, Sabine, Vaudour, Emmanuelle, Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS), AgroParisTech-Université Paris-Saclay-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), and University of Florida [Gainesville] (UF)
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agroecology ,soil organic carbon ,[SPI]Engineering Sciences [physics] ,reflectance ,amendments ,Science ,tillage ,[SDV.SA.AGRO]Life Sciences [q-bio]/Agricultural sciences/Agronomy ,Sentinel-2 ,exogenous organic matter ,[SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study - Abstract
International audience; Increasing attention has been placed on the agroecological impact of applying exogenous organic matter (EOM) amendments, such as green waste compost (GWC) and livestock manure, to agricultural landscapes. However, monitoring the frequency and locality of this practice poses a major challenge, as these events are typically unreported. The purpose of this study is to evaluate the utility of Sentinel-2 imagery for the detection of EOM amendments. Specifically, we investigated the spectral shift resulting from GWC and manure application at two spatial scales, satellite and proximal. At the satellite scale, multispectral Sentinel-2 image pairs were analyzed before and after EOM application to six cultivated fields in the Versailles Plain, France. At the proximal scale, multi-temporal spectral field measurements were taken of experimental plots consisting of 14 total treatments: EOM variety, amendment quantity (15, 30 and 60 t.ha−1) and tillage. The Sentinel-2 images showed significant spectral differences before and after EOM application. Exogenous Organic Matter Indices (EOMI) were developed and analyzed for separative performance. The best performing index was EOMI2, using the B4 and B12 Sentinel-2 spectral bands. At the proximal scale, simulated Sentinel-2 reflectance spectra, which were created using field measurements, successfully monitored all EOM treatments for three days, except for the buried green waste compost at a rate of 15 t.ha−1.
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- 2021
16. Editorial: Biogeosciences and Wine: The Management and Environmental Processes That Regulate the Terroir Effect in Space and Time
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Priori, Simone, primary, Brillante, Luca, additional, Bonfante, Antonello, additional, Vaudour, Emmanuelle, additional, Winter, Silvia, additional, and Conticelli, Sandro, additional
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- 2021
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17. Monitoring Grassland Management Effects on Soil Organic Carbon—A Matter of Scale
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Crème, Alexandra, primary, Rumpel, Cornelia, additional, Malone, Sparkle L., additional, Saby, Nicolas P. A., additional, Vaudour, Emmanuelle, additional, Decau, Marie-Laure, additional, and Chabbi, Abad, additional
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- 2020
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18. Soil Science Challenges in a New Era: A Transdisciplinary Overview of Relevant Topics
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Rodrigo-Comino, Jesús, primary, López-Vicente, Manuel, additional, Kumar, Vinod, additional, Rodríguez-Seijo, Andrés, additional, Valkó, Orsolya, additional, Rojas, Claudia, additional, Pourghasemi, Hamid Reza, additional, Salvati, Luca, additional, Bakr, Noura, additional, Vaudour, Emmanuelle, additional, Brevik, Eric C, additional, Radziemska, Maja, additional, Pulido, Manuel, additional, Di Prima, Simone, additional, Dondini, Marta, additional, de Vries, Wim, additional, Santos, Erika S, additional, Mendonça-Santos, Maria de Lourdes, additional, Yu, Yang, additional, and Panagos, Panos, additional
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- 2020
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19. Predicting key agronomic soil properties with fluorescence spectroscopy combined with reflectance spectroscopy: a farm-scale study in a Mediterranean viticultural agroecosystem
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Vaudour, Emmanuelle, Cerovic, Zoran G., Ebengo, Dav M., Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Université Paris Saclay (COmUE), Université Paris-Sud - Paris 11 (UP11), and Förderverein Uni Kinshasa
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[SDV]Life Sciences [q-bio] ,[SDE]Environmental Sciences ,ComputingMilieux_MISCELLANEOUS - Abstract
International audience
- Published
- 2018
20. Modélisation spatiale multi-sources du carbone organique dans le sol
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zaouche , Mounia, Bel , Liliane, Tressou , Jessica, Vaudour , Emmanuelle, Mathématiques et Informatique Appliquées (MIA-Paris), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS), Université Paris-Saclay, AgroParisTech-Institut National de la Recherche Agronomique (INRA), Université Paris Saclay (COmUE), Mathématiques et Informatique Appliquées ( MIA-Paris ), Institut National de la Recherche Agronomique ( INRA ) -AgroParisTech, Ecologie fonctionnelle et écotoxicologie des agroécosystèmes ( ECOSYS ), AgroParisTech-Institut National de la Recherche Agronomique ( INRA ), and Université Paris Saclay
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Statistique spatiale ,sol ,[ SDV ] Life Sciences [q-bio] ,Spatial statistics ,[SDV]Life Sciences [q-bio] ,INLA ,joint modelling ,SOC ,carbone ,modélisation jointe ,SPDE - Abstract
In order to reduce chemical fertilizer in agricultural use and to value the urban organic matter in substitution, a precise knowledge of soil properties is mandatory. Carbon is a good indicator of soil fertility and having at our disposal a precise mappingof its content is useful. In this study we aim at spatially estimate the soil carbon content (SOC) in the Versailles plain and the Alluets plateau, a 220 km2 agricultural area. The novel Bayesian inference approach called Integrated Nested Laplace Approximation with Stochastic Partial Differential Equation (INLA-SPDE) allows us to ensure consistency between the various available sources of information (soil samples and satellite image) and to produce in a short time a posteriori estimations of the parameters and the SOC field, considered as a latent field. Several models were evaluated and compared using the elevation covariate stemming from a Digital Elevation Model (DEM), including or not the data from the satellite image. Adding the image slightly improves the prediction quality in terms of RMSE (Root Mean Square Error RMSE) since the median goes from 3.17 g.kg−1 to 3.15 g.kg −1. Overall the carbon prediction map from the joint model represents more realistically the spatial structure of the carbon field.; La réduction des intrants chimiques d’usage agricole et la valorisatition des mati`eres organiques d’origine urbaine en substitution nécessitent une connaissance fine des propriétés des sols agricoles. Le carbone étant un bon indicateur de la fertilité des sols, il s’avère nécessaire de disposer d’une cartographie précise des teneurs. Dans cette étude, on cherche à produire une cartographie des teneurs en carbone dans la plaine de Versailles et le plateau des Alluets, région agricole de 220 km2. La nouvelle approche d’inférence Bayesienne Integrated Nested Laplace Approximation et Stochastic Partial Differential Equation (INLA-SPDE) nous permet de mettre en cohérence les différentes sources d’information disponibles (prélèvements au sol et image satellite) et d’obtenir en peu de temps des estimations a posteriori des paramètres et du champ de carbone considéré comme un champ latent. Nous avons évalué et comparé via une procédure bootstrap les performances plusieurs modèles utilisant comme covariable l’altitude issue d’un modèle numérique de terrain incluant ou non les données des images satellites.L’intégration de l’image améliore légèrement la qualité de prédiction en terme de RMSE (Root Mean Square Error) dont la médiane passe de 3.17 g.kg−1 `a 3.15 g.kg−1. Mais surtout la carte de prédiction du carbone issue de la modélisation jointe présente de façon beaucoup plus réaliste la structure spatiale du carbone.
- Published
- 2018
21. Predicting Key Agronomic Soil Properties with UV-Vis Fluorescence Measurements Combined with Vis-NIR-SWIR Reflectance Spectroscopy: A Farm-Scale Study in a Mediterranean Viticultural Agroecosystem
- Author
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Vaudour , Emmanuelle, Cerovic , Zoran, Ebengo Mwampongo , Dav, Latouche , Gwendal, Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Université Paris-Saclay, Ecologie Systématique et Evolution (ESE), Université Paris-Sud - Paris 11 (UP11)-AgroParisTech-Centre National de la Recherche Scientifique (CNRS), Ecologie fonctionnelle et écotoxicologie des agroécosystèmes ( ECOSYS ), Institut National de la Recherche Agronomique ( INRA ) -AgroParisTech, Université Paris Saclay, Ecologie Systématique et Evolution ( ESE ), and Université Paris-Sud - Paris 11 ( UP11 ) -AgroParisTech-Centre National de la Recherche Scientifique ( CNRS )
- Subjects
[ SDV ] Life Sciences [q-bio] ,soil properties ,[SDV]Life Sciences [q-bio] ,partial least squares regression ,model averaging ,fertility assessment ,Mediterranean vineyard soils ,UV-Vis fluorescence ,Vis-NIR-SWIR reflectance spectroscopy ,multiple excitation fluorescence sensor - Abstract
For adequate crop and soil management, rapid and accurate techniques for monitoring soil properties are particularly important when a farmer starts up his activities and needs a diagnosis of his cultivated fields. This study aimed to evaluate the potential of fluorescence measured directly on 146 whole soil solid samples, for predicting key soil properties at the scale of a 6 ha Mediterranean wine estate with contrasting soils. UV-Vis fluorescence measurements were carried out in conjunction with reflectance measurements in the Vis-NIR-SWIR range. Combining PLSR predictions from Vis-NIR-SWIR reflectance spectra and from a set of fluorescence signals enabled us to improve the power of prediction of a number of key agronomic soil properties including SOC, Ntot, CaCO3, iron, fine particle-sizes (clay, fine silt, fine sand), CEC, pH and exchangeable Ca2+ with cross-validation RPD ≥ 2 and R² ≥ 0.75, while exchangeable K+, Na+, Mg2+, coarse silt and coarse sand contents were fairly predicted (1.42 ≤ RPD < 2 and 0.54 ≤ R² < 0.75). Predictions of SOC, Ntot, CaCO3, iron contents, and pH were still good (RPD ≥ 1.8, R² ≥ 0.68) when using a single fluorescence signal or index such as SFR_R or FERARI, highlighting the unexpected importance of red excitations and indices derived from plant studies. The predictive ability of single fluorescence indices or original signals was very significant for topsoil: this is very important for a farmer who wishes to update information on soil nutrient for the purpose of fertility diagnosis and particularly nitrogen fertilization. These results open encouraging perspectives for using miniaturized fluorescence devices enabling red excitation coupled with red or far-red fluorescence emissions directly in the field.
- Published
- 2018
22. The Impact of Acquisition Date on the Prediction Performance of Topsoil Organic Carbon from Sentinel-2 for Croplands
- Author
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Vaudour, Emmanuelle, primary, Gomez, Cécile, additional, Loiseau, Thomas, additional, Baghdadi, Nicolas, additional, Loubet, Benjamin, additional, Arrouays, Dominique, additional, Ali, Leïla, additional, and Lagacherie, Philippe, additional
- Published
- 2019
- Full Text
- View/download PDF
23. The potential of UAS imagery for soil mapping at the agricultural plot scale
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Gilliot, Jean-Marc, Michelin, Joël, Becu, Maxime, Cissé, Moustapha, Hadjar, Dalila, Vaudour, Emmanuelle, Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, and DEFISOL
- Subjects
[SDV]Life Sciences [q-bio] - Abstract
The potential of UAS imagery for soil mapping at the agricultural plot scale. EGU 2017, European Geophysical Union General Assembly 2017
- Published
- 2017
24. Potential of SENTINEL-2 images for predicting common topsoil properties over Temperate and Mediterranean agroecosystems
- Author
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Vaudour, Emmanuelle, Gomez, Cécile, Fouad, Youssef, Gilliot, Jean-Marc, Lagacherie, Philippe, Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Laboratoire d'étude des Interactions Sol - Agrosystème - Hydrosystème (UMR LISAH), Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Sol Agro et hydrosystème Spatialisation (SAS), AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de la Recherche Agronomique (INRA), Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut de Recherche pour le Développement (IRD [ Madagascar])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST, and Institut de Recherche pour le Développement (IRD)-Institut de Recherche pour le Développement (IRD [ Madagascar])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)
- Subjects
[SDV]Life Sciences [q-bio] - Abstract
Potential of SENTINEL-2 images for predicting common topsoil properties over Temperate and Mediterranean agroecosystems. EGU 2017, European Geophysical Union General Assembly 2017
- Published
- 2017
25. Retracing recurring vine mortality patterns over a long duration: case study of a Mediterranean viticultural estate
- Author
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Vaudour, Emmanuelle, Leclercq, Léa, Gilliot, Jean-Marc, Chaignon, Benoît, Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS), and Institut National de la Recherche Agronomique (INRA)-AgroParisTech
- Subjects
[SDV]Life Sciences [q-bio] - Abstract
Retracing recurring vine mortality patterns over a long duration: case study of a Mediterranean viticultural estate. EGU 2017, European Geophysical Union General Assembly 2017
- Published
- 2017
26. Soil and culture viewed through the prism of viticultural terroir
- Author
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Vaudour, Emmanuelle, Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS), and Institut National de la Recherche Agronomique (INRA)-AgroParisTech
- Subjects
[SDV]Life Sciences [q-bio] - Abstract
Soil and culture viewed through the prism of viticultural terroir. EGU 2017, European Geophysical Union General Assembly 2017
- Published
- 2017
27. Combining optical remote sensing, agricultural statistics and field observations for culture recognition over a peri-urban region
- Author
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Delbart, Nicolas, Vaudour, Emmanuelle, Maignan, Fabienne, Ottlé, Catherine, Gilliot, Jean-Marc, Pôle de recherche pour l'organisation et la diffusion de l'information géographique (PRODIG), Université Paris 1 Panthéon-Sorbonne (UP1)-Institut de Recherche pour le Développement (IRD)-Université Paris-Sorbonne (UP4)-AgroParisTech-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Pôle de recherche pour l'organisation et la diffusion de l'information géographique ( PRODIG ), Centre National de la Recherche Scientifique ( CNRS ) -Université Panthéon-Sorbonne ( UP1 ) -AgroParisTech-Université Paris-Sorbonne ( UP4 ) -Institut de Recherche pour le Développement ( IRD ) -Université Paris Diderot - Paris 7 ( UPD7 ), Ecologie fonctionnelle et écotoxicologie des agroécosystèmes ( ECOSYS ), Institut National de la Recherche Agronomique ( INRA ) -AgroParisTech, Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] ( LSCE ), Université de Versailles Saint-Quentin-en-Yvelines ( UVSQ ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay-Centre National de la Recherche Scientifique ( CNRS ), Université Paris Diderot - Paris 7 (UPD7)-Institut de Recherche pour le Développement (IRD)-Université Paris-Sorbonne (UP4)-AgroParisTech-Université Panthéon-Sorbonne (UP1)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS), and Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Peri-urban region ,[SDV.SA]Life Sciences [q-bio]/Agricultural sciences ,[SPI]Engineering Sciences [physics] ,[ SDV ] Life Sciences [q-bio] ,[SDV]Life Sciences [q-bio] ,Optical remote sensing ,[ SPI ] Engineering Sciences [physics] ,Agricultural statistics ,[ SDV.SA ] Life Sciences [q-bio]/Agricultural sciences ,ComputingMilieux_MISCELLANEOUS - Abstract
International audience
- Published
- 2017
28. Potential of Sentinel-1 Images for Estimating the Soil Roughness over Bare Agricultural Soils
- Author
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Baghdadi, Nicolas, primary, El Hajj, Mohammad, additional, Choker, Mohammad, additional, Zribi, Mehrez, additional, Bazzi, Hassan, additional, Vaudour, Emmanuelle, additional, Gilliot, Jean-Marc, additional, and Ebengo, Dav, additional
- Published
- 2018
- Full Text
- View/download PDF
29. Mapping agricultural phenology using repetitive optical remote sensing over a peri-urban region
- Author
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Vaudour, Emmanuelle, Dragoi, Mihaela, Maignan, Fabienne, Ottlé, Catherine, and delbart, Nicolas
- Published
- 2016
30. Les sols : intégrer leur multifonctionnalité pour une gestion durable
- Author
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Bispo, Antionio, Chenu, Claire, Barthès, Bernard, Gobrecht, Alexia, Vaudour, Emmanuelle, Soubelet, Hélène, Sol et recherche, Agence de l'Environnement et de la Maîtrise de l'Energie (ADEME), Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Université Paris-Saclay, Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes (UMR Eco&Sols), Institut National de la Recherche Agronomique (INRA)-Institut de Recherche pour le Développement (IRD)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Information – Technologies – Analyse Environnementale – Procédés Agricoles (UMR ITAP), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Biodiversité et gestion durable des milieux, Ministère de l’écologie, de l’énergie, du développement durable et de la mer, programme Eaux et Territoires, ProdInra, Archive Ouverte, Antonio Bispo, Camille Guellier, Edith Martin, Jurgis Sapijanskas, Hélène Soubelet, Claire Chenu, Bispo, A. (coord.), Guellier, C. (coord.), Martin, E. (coord.), Sapijanskas, J (coord.), Soubelet, H. (coord.), Chenu, C. (coord.), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), and Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)
- Subjects
[SDV] Life Sciences [q-bio] ,agronomie ,sol ,climat ,sécurité alimentaire ,[SDV]Life Sciences [q-bio] ,développement durable ,politique publique ,écosystème ,environnement ,biodiversité ,écologie - Abstract
De la mise en place d’indicateurs pour la planification urbaine à la mesure des stocks de carbone, en passant par les instruments juridiques et économiques pour la protection des sols, cet ouvrage, issu du programme Gessol, synthétise les dernières connaissances biotechniques et sociétales sur le sujet. Il souligne l’importance d’une gestion durable des sols dans les enjeux globaux et identifie les leviers d’actions possibles.
- Published
- 2016
31. Estimation des teneurs en carbone organique des sols agricoles par télédétection par drone
- Author
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Gilliot, Jean-Marc, primary, Vaudour, Emmanuelle, additional, Michelin, Joël, additional, and Houot, Sabine, additional
- Published
- 2017
- Full Text
- View/download PDF
32. Regional prediction of soil organic carbon content over croplands using airborne hyperspectral data
- Author
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Vaudour, Emmanuelle, Gilliot, Jean-Marc, Bel, Liliane, Lefebvre, J., Chehdi, K., Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Mathématiques et Informatique Appliquées (MIA-Paris), Ecole Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT/TSI2M), and AgroParisTech-Institut National de la Recherche Agronomique (INRA)
- Subjects
[SDV]Life Sciences [q-bio] - Abstract
oral presentation, abstract; This study was carried out in the framework of the Prostock-Gessol3 and the BASC-SOCSENSIT projects, dedicated to the spatial monitoring of the effects of exogenous organic matter land application on soil organic carbon storage. It aims at identifying the potential of airborne hyperspectral AISA-Eagle data for predicting the topsoil organic carbon (SOC) content of bare cultivated soils over a large peri-urban area (221 km2) with both contrasted soils and SOC contents, located in the western region of Paris, France. Soils comprise hortic or glossic luvisols, calcaric, rendzic cambisols and colluvic cambisols. Airborne AISA-Eagle data (400-1000 nm, 126 bands) with 1 m-resolution were acquired on 17 April 2013 over 13 tracks which were georeferenced. Tracks were atmospherically corrected using a set of 22 synchronous field spectra of both bare soils, black and white targets and impervious surfaces. Atmospherically corrected track tiles were mosaicked at a 2 m-resolution resulting in a 66 Gb image. A SPOT4 satellite image was acquired the same day in the framework of the SPOT4-Take Five program of the French Space Agency (CNES) which provided it with atmospheric correction. The land use identification system layer (RPG) of 2012 was used to mask non-agricultural areas, then NDVI calculation and thresholding enabled to map agricultural fields with bare soil. All 18 sampled sites known to be bare at this very date were correctly included in this map. A total of 85 sites sampled in 2013 or in the 3 previous years were identified as bare by means of this map. Predictions were made from the mosaic spectra which were related to topsoil SOC contents by means of partial least squares regression (PLSR). Regression robustness was evaluated through a series of 1000 bootstrap data sets of calibration-validation samples. The use of the total sample including 27 sites under cloud shadows led to non-significant results. Considering 43 sites outside cloud shadows only, median validation root-mean-square errors (RMSE) were abour 4-4.5 g. kg-1. An additional set of 15 samples with bare soils led to similar RMSE values. Such results are only slightly better than those resulting from an earlier study with multispectral satellite images (Vaudour et al., 2013). The influence of soil surface condition and particularly soil roughness is discussed
- Published
- 2015
33. A farm-scale framework for assessing vineyard soil fertility and restoration practices
- Author
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Vaudour, Emmanuelle, Gilliot, Jean-Marc, Leclercq, Lea, Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS), and Institut National de la Recherche Agronomique (INRA)-AgroParisTech
- Subjects
[SDV]Life Sciences [q-bio] - Abstract
The design of sustainable vineyard management is needed at varied scales and particularly at farm-scale. More and more winegrowers wish to adopt environmental-friendly practices while better controlling harvest composition. This leads to question complex issues with regard to sustainability of winegrowing agroecosystem and the adoption of new soil and vineyard management practices that are likely to favour a long-term preservation of quality production together with soil ecosystem functions. This study aims at elaborating a multivariate approach framework for vineyard soil fertility assessment over a 6 ha-farm planted with rainfed black Grenache and Syrah varieties in the Southern Rhone Valley. In a previous study carried out at the regional scale, soil landscape and potential terroir units had been characterized. A new field survey comprising _20 soil pits, physico-chemical analyses for all soil profile horizons, and a series of additional soil surface samples analyzed for several parameters including soil organic carbon, calcium carbonate, copper and the major mineral nutrients, is here carried out. Along with soil parameters and soil surface condition, vine biological parameters including vigour, presence of diseases, stock-unearthing are collected. Very high resolution multispectral satellite data and resistivity EMI data are acquired and processed in order to characterize spatial variations in both physiological responses, soil surface conditions, soil depth and/or the presence of coarse elements. Multi-temporal historical aerial photographs are used in order to complement farmer’s surveys regarding past management practices. The farm is characterized by a diversity of soils including Red Mediterranean soils (chromic luvisols), colluvic calcisols, arenosols, fluvisols, and regosols, which develop from top to slope then bottom of a Neogene molassic and conglomeratic plateau. Soil management past practices are marked by the absence of chemical/organic manuring in the last decades, resulting in erosional features and weakened vines. Relationships between vine spatial variability, soil spatial variability and the impact of past practices are analyzed and result in formalizing decision rules. Several restoration scenarios are then proposed, that focus either on chemical fertilizer and/or organic amendment and/or interrow cover and/or agroforestry practices.
- Published
- 2015
34. Optimisation de l’utilisation des Produits Résiduaires Organiques par l’agriculture à l’échelon territorial : le cas de la Plaine de Versailles
- Author
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Lubbers, Marcel, Bamière, Laure, Vaudour, Emmanuelle, Gilliot, Jean-Marc, Gabrielle, Benoit, Aubry, Christine, Houot, Sabine, and Noirot Cosson, Paul Emile
- Published
- 2015
35. Gouvernance territoriale et qualité des sols : tout reste à faire !
- Author
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trolard, Fabienne, Girard, Jean-Claude, Vaudour, Emmanuelle, and King, Christine
- Subjects
territoire ,sécurité alimentaire ,gestion du sol ,multiusage du territoire ,gestion de l'eau ,gestion durable - Abstract
Toujours perdante dès que survient un conflit d’usage, la gestion durable des sols est-elle une gageure ? Cette question est souvent renforcée par une sensation de menace majeure : que faire pour que l’urbanisation n’envahisse pas tout ? Plus largement, comment mieux prendre en compte les sols dans les situations de conflits d’usage d’un territoire ? Comment mieux les placer dans la vision socio- économique d’ensemble ? Pour quelle décision ? Un usage définitif ou bien faut-il le conditionner à un suivi vérifiant la stabilité des qualités initiales ?
- Published
- 2015
36. Apport des images satellitaires de très haute résolution spatiale Pléiades à la caractérisation des cultures et des opérations culturales en début de saison
- Author
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Vaudour, Emmanuelle, primary, Noirot-Cosson, Paul-Emile, additional, and Membrive, Olivier, additional
- Published
- 2014
- Full Text
- View/download PDF
37. Toward an Operational Bare Soil Moisture Mapping Using TerraSAR-X Data Acquired Over Agricultural Areas
- Author
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Aubert, Maelle, primary, Baghdadi, Nicolas N., additional, Zribi, Mehrez, additional, Ose, Kenji, additional, El Hajj, Mahmoud, additional, Vaudour, Emmanuelle, additional, and Gonzalez-Sosa, Enrique, additional
- Published
- 2013
- Full Text
- View/download PDF
38. Impact of acquisition date on the prediction performance of topsoil organic carbon from single date or multidate Sentinel-2 images.
- Author
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Vaudour, Emmanuelle, Gomez, Cécile, Ali, Leila, Loiseau, Thomas, Lagacherie, Philippe, and Arrouays, Dominique
- Subjects
- *
DIGITAL soil mapping , *GROUND cover plants , *SOIL moisture , *TOPSOIL , *HISTOSOLS , *CLOUDINESS - Abstract
The spatial assessment of soil organic carbon (SOC) is a major environmental challenge, notably for evaluating soil carbon stocks. The current remote sensing methods are inoperative in the presence of vegetation, as vegetation cover disturbs the soil reflectance signal. As a consequence, the soil areal fraction that is available for the mapping of topsoil property from remote sensing imagery varies with acquisition date. More, soil surface condition changes across the available bare soil area, particularly in terms of soil moisture and roughness according to tillage operations. Over the Versailles Plain near Paris, France, a single Sentinel-2 image has demonstrated encouraging capability to estimate topsoil SOC for temperate soils with annual crop systems (Vaudour et al., 2019). Considering the same study area and a Sentinel-2 time series, this study aimed : i) to analyse the impact of acquisition date and related soil surface conditions on the prediction performance of topsoil SOC content; ii) to assess the potential added value of aggregating several Sentinel-2 images into a multidate mosaic for predicting SOC content. A Sentinel-2 time-series was gathered, composed of the dates corresponding to a maximum coverage of bare soil, from 1 March to 30 April in 2016 and 2017 and 1 November to 31 December in 2016. Cross-validated partial least squares regression (PLSR) models were constructed between soil reflectance image spectra and SOC content. Soil samples were comprised between 49 to 151 for a NDVI threshold of 0.27. In addition to single date, four variants of composite image were tested for prediction performance, constructed each on the following criteria: i) least NDVI value amongst several available acquisition dates ; ii) least soil moisture content amongst several available dates ; iii) least normalized difference water index (NDWI) amongst several available dates ; iv) best single prediction performance by decreasing order amongst dates.R², RMSE, RPD values varied according to date and ranged from 0.002 to 0.57, 5.57 to 3.14 g C.Kg-1, 1.01 to 1.53, respectively, for single date. The main factors influencing these differences were the composition of the dataset, cloud cover, soil moisture and soil roughness. The best performing dates of April 2017 had the lowest soil moisture content and the lowest roughness, in conjunction with perfect sky conditions. Under the 0.27-threshold, NDVI values did not influence prediction performance.The best results were yielded from the composite image constructed on the criteria of best performance of 3 dates, that relied on 167 samples : R², RMSE, RPD of 0.5, 3.34 g C.Kg-1, 1.41. It was closely followed by the 3 date-mosaic constructed on the criteria of least NDWI (R², RMSE, RPD of 0.4, 3.64 g C.Kg-1, 1.38) which is easier to apply and validate. This consolidates the previous results yielded from single date and offers wider perspectives for the further use of Sentinel-2 multidate mosaics for digital soil mapping. ReferenceVaudour, E., Gomez, C., Fouad, Y., Lagacherie, P., 2019. Sentinel-2 image capacities to predict common topsoil properties of temperate and Mediterranean agroecosystems. Remote Sensing of Environment, accepted.This work was supported by CNES, France. [ABSTRACT FROM AUTHOR]
- Published
- 2019
39. Monitoring phenology of crops at the parcel scale : combining high and medium spatial resolution data.
- Author
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Rivas, Henry, Delbart, Nicolas, Ottlé, Catherine, Maignan, Fabienne, and Vaudour, Emmanuelle
- Published
- 2019
40. Potential of combined Sentinel 1/ Sentinel 2 images for mapping topsoil organic carbon content over cropland taking into account soil roughness.
- Author
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Ebengo, Dav M., Vaudour, Emmanuelle, Gilliot, Jean-Marc, Hadjar, Dalila, and Baghdadi, Nicolas
- Subjects
- *
FARMS , *GUARD duty , *SOILS , *CARBON , *ACCOUNTS , *TOPSOIL - Published
- 2018
41. Predicting key agronomic soil properties with UV-Vis fluorescence measurements combined with Vis-NIR-SWIR reflectance spectroscopy: A farm-scale study in a mediterranean viticultural agroecosystem
- Author
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Cerovic, Zoran, Ebengo Mwampongo, Dav, Latouche, Gwendal, and Vaudour, Emmanuelle
- Subjects
UV-Vis fluorescence ,multiple excitation fluorescence sensor ,Vis-NIR-SWIR reflectance spectroscopy ,soil properties ,partial least squares regression ,Mediterranean vineyard soils ,fertility assessment ,model averaging - Abstract
For adequate crop and soil management, rapid and accurate techniques for monitoring soil properties are particularly important when a farmer starts up his activities and needs a diagnosis of his cultivated fields. This study aimed to evaluate the potential of fluorescence measured directly on 146 whole soil solid samples, for predicting key soil properties at the scale of a 6 ha Mediterranean wine estate with contrasting soils. UV-Vis fluorescence measurements were carried out in conjunction with reflectance measurements in the Vis-NIR-SWIR range. Combining PLSR predictions from Vis-NIR-SWIR reflectance spectra and from a set of fluorescence signals enabled us to improve the power of prediction of a number of key agronomic soil properties including SOC, Ntot, CaCO3, iron, fine particle-sizes (clay, fine silt, fine sand), CEC, pH and exchangeable Ca2+ with cross-validation RPD ≥ 2 and R² ≥ 0.75, while exchangeable K+, Na+, Mg2+, coarse silt and coarse sand contents were fairly predicted (1.42 ≤ RPD < 2 and 0.54 ≤ R² < 0.75). Predictions of SOC, Ntot, CaCO3, iron contents, and pH were still good (RPD ≥ 1.8, R² ≥ 0.68) when using a single fluorescence signal or index such as SFR_R or FERARI, highlighting the unexpected importance of red excitations and indices derived from plant studies. The predictive ability of single fluorescence indices or original signals was very significant for topsoil: this is very important for a farmer who wishes to update information on soil nutrient for the purpose of fertility diagnosis and particularly nitrogen fertilization. These results open encouraging perspectives for using miniaturized fluorescence devices enabling red excitation coupled with red or far-red fluorescence emissions directly in the field.
- Published
- 2018
42. Retrospective 70 y-spatial analysis of repeated vine mortality patterns using ancient aerial time series, Pléiades images and multi-source spatial and field data
- Author
-
Jean-Marc Gilliot, Bernoît Chaignon, Emmanuelle Vaudour, Léa Leclercq, Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Domaine des Chauvets, and Vaudour, Emmanuelle
- Subjects
Digital zoning ,Vine mortality ,Terroir ,Time series ,Cross-variogram ,EM38 ,Pléiades ,Farm scale ,Stock unearthing ,Vine ,Geographic information system ,010504 meteorology & atmospheric sciences ,Aerial survey ,[SDV]Life Sciences [q-bio] ,Management, Monitoring, Policy and Law ,01 natural sciences ,Normalized Difference Vegetation Index ,Computers in Earth Sciences ,Spatial analysis ,0105 earth and related environmental sciences ,Earth-Surface Processes ,2. Zero hunger ,Global and Planetary Change ,Topsoil ,business.industry ,04 agricultural and veterinary sciences ,15. Life on land ,Geography ,040103 agronomy & agriculture ,Spatial ecology ,0401 agriculture, forestry, and fisheries ,business ,Cartography - Abstract
For any wine estate, there is a need to demarcate homogeneous within-vineyard zones (‘terroirs’) so as to manage grape production, which depends on vine biological condition. Until now, the studies performing digital zoning of terroirs have relied on recent spatial data and scant attention has been paid to ancient geoinformation likely to retrace past biological condition of vines and especially occurrence of vine mortality. Is vine mortality characterized by recurrent and specific patterns and if so, are these patterns related to terroir units and/or past landuse? This study aimed at performing a historical and spatial tracing of vine mortality patterns using a long time-series of aerial survey images (1947–2010), in combination with recent data: soil apparent electrical conductivity EM38 measurements, very high resolution Pleiades satellite images, and a detailed field survey. Within a 6 ha-estate in the Southern Rhone Valley, landuse and planting history were retraced and the map of missing vines frequency was constructed from the whole time series including a 2015-Pleiades panchromatic band. Within-field terroir units were obtained from a support vector machine classifier computed on the spectral bands and NDVI of Pleiades images, EM38 data and morphometric data. Repeated spatial patterns of missing vines were highlighted throughout several plantings, uprootings, and vine replacements, and appeared to match some within-field terroir units, being explained by their specific soil characteristics, vine/soil management choices and the past landuse of the 1940s. Missing vines frequency was spatially correlated with topsoil CaCO3 content, and negatively correlated with topsoil iron, clay, total N, organic C contents and NDVI. A retrospective spatio-temporal assessment of terroir therefore brings a renewed focus on some key parameters for maintaining a sustainable grape production.
- Published
- 2017
43. Approche hiérarchique pour estimer la teneur en carbone dans le sol a l’échelle d’une petite région agricole
- Author
-
zaouche, Mounia, Bel, Liliane, Tressou, Jessica, and Vaudour, Emmanuelle
- Published
- 2016
44. Retrospective farm scale spatial analysis of viticultural terroir fertility using a 70 y-aerial photograph time series, soil survey and very high resolution Pléiades and EM38 data
- Author
-
Leclercq, Léa, Gilliot, Jean-Marc, Chaignon, Benoît, and Vaudour, Emmanuelle
- Published
- 2016
45. Predicting Key Agronomic Soil Properties with UV-Vis Fluorescence Measurements Combined with Vis-NIR-SWIR Reflectance Spectroscopy: A Farm-Scale Study in a Mediterranean Viticultural Agroecosystem.
- Author
-
Vaudour E, Cerovic ZG, Ebengo DM, and Latouche G
- Subjects
- Ecosystem, Farms, Nitrogen, Silicon Dioxide, Spectroscopy, Near-Infrared, Soil
- Abstract
For adequate crop and soil management, rapid and accurate techniques for monitoring soil properties are particularly important when a farmer starts up his activities and needs a diagnosis of his cultivated fields. This study aimed to evaluate the potential of fluorescence measured directly on 146 whole soil solid samples, for predicting key soil properties at the scale of a 6 ha Mediterranean wine estate with contrasting soils. UV-Vis fluorescence measurements were carried out in conjunction with reflectance measurements in the Vis-NIR-SWIR range. Combining PLSR predictions from Vis-NIR-SWIR reflectance spectra and from a set of fluorescence signals enabled us to improve the power of prediction of a number of key agronomic soil properties including SOC, N
tot , CaCO₃, iron, fine particle-sizes (clay, fine silt, fine sand), CEC, pH and exchangeable Ca2+ with cross-validation RPD ≥ 2 and R² ≥ 0.75, while exchangeable K⁺, Na⁺, Mg2+ , coarse silt and coarse sand contents were fairly predicted (1.42 ≤ RPD < 2 and 0.54 ≤ R² < 0.75). Predictions of SOC, Ntot , CaCO₃, iron contents, and pH were still good (RPD ≥ 1.8, R² ≥ 0.68) when using a single fluorescence signal or index such as SFR_R or FERARI, highlighting the unexpected importance of red excitations and indices derived from plant studies. The predictive ability of single fluorescence indices or original signals was very significant for topsoil: this is very important for a farmer who wishes to update information on soil nutrient for the purpose of fertility diagnosis and particularly nitrogen fertilization. These results open encouraging perspectives for using miniaturized fluorescence devices enabling red excitation coupled with red or far-red fluorescence emissions directly in the field., Competing Interests: The authors declare no conflict of interest.- Published
- 2018
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