@article{
 title = {Soil carbon stocks after conversion of Amazonian tropical forest to grazed pasture: importance of deep soil layers},
 type = {article},
 year = {2016},
 keywords = {C3 contribution,Deep soil C,Mixed-grass pasture,Native forest,Old pasture},
 pages = {1-11},
 id = {1013051d-dec4-3459-a0ba-ef3c8dbac1e3},
 created = {2020-08-28T15:56:02.530Z},
 file_attached = {false},
 profile_id = {5c1040db-25e3-36ea-a919-0994a44709e7},
 group_id = {c4af41cc-7e3c-3fd3-9982-bdb923596eee},
 last_modified = {2020-08-28T15:56:02.530Z},
 read = {false},
 starred = {false},
 authored = {false},
 confirmed = {true},
 hidden = {false},
 citation_key = {Stahl2016},
 private_publication = {false},
 abstract = {© 2016 Springer-Verlag Berlin Heidelberg Recent studies suggest that carbon (C) is stored in the topsoil of pastures established after deforestation. However, little is known about the long-term capacity of tropical pastures to sequester C in different soil layers after deforestation. Deep soil layers are generally not taken into consideration or are underestimated when C storage is calculated. Here we show that in French Guiana, the C stored in the deep soil layers contributes significantly to C stocks down to a depth of 100 cm and that C is sequestered in recalcitrant soil organic matter in the soil below a depth of 20 cm. The contribution of the 50–100 cm soil layer increased from 22 to 31 % with the age of the pasture. We show that long-term C sequestration in C4 tropical pastures is linked to the development of C3 species (legumes and shrubs), which increase both inputs of N into the ecosystem and the C:N ratio of soil organic matter. The deep soil under old pastures contained more C3 carbon than the native forest. If C sequestration in the deep soil is taken into account, our results suggest that the soil C stock in pastures in Amazonia would be higher with sustainable pasture management, in particular by promoting the development of legumes already in place and by introducing new species.},
 bibtype = {article},
 author = {Stahl, Clément and Freycon, Vincent and Fontaine, Sébastien and Dezécache, Camille and Ponchant, Lise and Picon-Cochard, Catherine and Klumpp, Katja and Soussana, Jean François and Blanfort, Vincent},
 doi = {10.1007/s10113-016-0936-0},
 journal = {Regional Environmental Change}
}

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