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Ley grassland under temperate climate had a legacy effect on soil organic matter quantity, biogeochemical signature and microbial activities
- Source :
- Soil Biology and Biochemistry, Soil Biology and Biochemistry, Elsevier, 2018, 122, pp.203-210. ⟨10.1016/j.soilbio.2018.04.018⟩, Soil Biology and Biochemistry, Elsevier, 2018, 122, pp.203-210. 〈10.1016/j.soilbio.2018.04.018〉
- Publication Year :
- 2018
- Publisher :
- HAL CCSD, 2018.
-
Abstract
- Temporary (ley) grassland introduced into cropping cycles has been advocated as being beneficial for the delivery of ecosystem services by agricultural soils. The management of these temporary grasslands has unknown effects on soil organic matter (SOM) concentrations and biogeochemical properties of the cropland soils following the grassland phase. Here, we investigated the legacy effect of differently managed temporary grasslands, i.e. change of soil properties lasting beyond three years of crop. We assessed soil organic carbon (SOC) quantity and SOM biogeochemical signature (composition of soil neutral carbohydrates and lignin), as well as microbial activities (potential C and N mineralization and denitrification). We used a long-term field experiment on Cambisol with temperate climate in western France, where temporary grassland management practices differed in terms of duration (3 or 6 years) and presence or absence of N fertilisation. Topsoil (10 cm) samples were collected after a 3-yr crop rotation (maize, wheat, barley). Our results showed that N fertilisation during the grassland phase was necessary to maintain soil C and N concentrations beyond three years of crop. Temporary grassland management may affect microbial activities as indicated by contrasting polysaccharide and lignin composition. It had however, no effect on potential CO2 and N2O emissions during laboratory incubations. The biogeochemical signature of SOM was close to continuous grassland only in treatments with 6 yrs of fertilized temporary grassland. We thus, conclude that the legacy effects of a grassland phase on SOC quantity and properties of SOM depend on its management.
- Subjects :
- Biogeochemical cycle
Soil organic matter biogeochemistry
010504 meteorology & atmospheric sciences
[SDV]Life Sciences [q-bio]
Soil Science
01 natural sciences
Microbiology
Temporary grassland management
Grassland
Organic matter
0105 earth and related environmental sciences
2. Zero hunger
chemistry.chemical_classification
Cambisol
geography
Topsoil
geography.geographical_feature_category
[ SDV ] Life Sciences [q-bio]
Soil organic matter
04 agricultural and veterinary sciences
Soil carbon
Long-term field experiment
15. Life on land
Crop rotation
Potential N2O emission
Agronomy
chemistry
13. Climate action
040103 agronomy & agriculture
0401 agriculture, forestry, and fisheries
Environmental science
Microbial activities
Subjects
Details
- Language :
- English
- ISSN :
- 00380717
- Database :
- OpenAIRE
- Journal :
- Soil Biology and Biochemistry, Soil Biology and Biochemistry, Elsevier, 2018, 122, pp.203-210. ⟨10.1016/j.soilbio.2018.04.018⟩, Soil Biology and Biochemistry, Elsevier, 2018, 122, pp.203-210. 〈10.1016/j.soilbio.2018.04.018〉
- Accession number :
- edsair.doi.dedup.....87fe26ed1a2e4b13fa781dba1cd7c7b8