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Quantifying and simulating carbon and nitrogen mineralization from diverse exogenous organic matters
- Source :
- Soil Use and Management, Soil Use and Management, 2022, 38 (1), pp.411-425. ⟨10.1111/sum.12745⟩, Soil Use and Management, Wiley, 2021, pp.1-15. ⟨10.1111/sum.12745⟩
- Publication Year :
- 2022
-
Abstract
- International audience; The potential contributions of exogenous organic matters (EOMs) to soil organic C and mineral N supply depend on their C and N mineralization, which can be assessed in laboratory incubations. Such incubations are essential to calibrate decomposition models, because not all EOMs can be tested in the field. However, EOM incubations are resource-intensive. Therefore, easily measurable EOM characteristics that can be useful to predict EOM behaviour are needed. We quantified C and N mineralization during the incubation of 663 EOMs from five groups (animal manures, composts, sewage sludges, digestates and others). This represents one of the largest and diversified set of EOM incubations. The C and N mineralization varied widely between and within EOM subgroups. We simulated C and N mineralization with a simple generic decomposition model. Three calibration methods were compared. Individual EOM calibration of the model yielded good model performances, while the use of a unique parameter set per EOM subgroup decreased the model performance, and the use of two EOM characteristics to estimate model parameters gave an intermediate model performance (average RMSE-C values of 32, 99 and 65 mg C g(-1) added C and average RMSE-N values of 50, 126 and 110 mg N g(-1) added N, respectively). Because of the EOM variability, individual EOM calibration based on incubation remains the recommended method for predicting most accurately the C and N mineralization of EOMs. However, the two alternative calibration methods are sufficient for the simulation of EOMs without incubation data to obtain reasonable model performances.
- Subjects :
- 010504 meteorology & atmospheric sciences
Model parameters
01 natural sciences
Soil
Fertilizer
Incubation
organic matter
chemistry.chemical_classification
N mineralization
04 agricultural and veterinary sciences
Compost
Pollution
Environmental chemistry
Minéralisation du carbone
Organic amendment
P33 - Chimie et physique du sol
Boue résiduaire
Soil Science
chemistry.chemical_element
[SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study
Matière organique du sol
Digesta
Organic matter
Matière organique
Nitrogen cycle
0105 earth and related environmental sciences
Decomposition
Amendement du sol
Mineralization (soil science)
Fumier
Amendement organique
chemistry
040103 agronomy & agriculture
0401 agriculture, forestry, and fisheries
Agronomy and Crop Science
Carbon
Model
F04 - Fertilisation
Minéralisation de l'azote
Subjects
Details
- Language :
- English
- ISSN :
- 02660032 and 14752743
- Database :
- OpenAIRE
- Journal :
- Soil Use and Management, Soil Use and Management, 2022, 38 (1), pp.411-425. ⟨10.1111/sum.12745⟩, Soil Use and Management, Wiley, 2021, pp.1-15. ⟨10.1111/sum.12745⟩
- Accession number :
- edsair.doi.dedup.....2b4ee459cccb01299b9bf7dcc69d9c2a