@article{fdi:010064720,
  title = {{F}rom forest to cropland and pasture systems : a critical review of soil organic carbon stocks changes in {A}mazonia},
  author = {{F}ujisaki, {K}enji and {P}errin, {A}. {S}. and {D}esjardins, {T}hierry and {B}ernoux, {M}artial and {B}albino, {L}. {C}. and {B}rossard, {M}ichel},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he impact of deforestation on soil organic carbon ({SOC}) stocks is important in the context of climate change and agricultural soil use. {T}rends of {SOC} stock changes after agroecosystem establishment vary according to the spatial scale considered, and factors explaining these trends may differ sometimes according to meta-analyses. {W}e have reviewed the knowledge about changes in {SOC} stocks in {A}mazonia after the establishment of pasture or cropland, sought relationships between observed changes and soil, climatic variables and management practices, and synthesized the {C}-13 measured in pastures. {O}ur dataset consisted of 21 studies mostly synchronic, across 52 sites ({B}razil, {C}olombia, {F}rench {G}uiana, {S}uriname), totalling 70 forest-agroecosystem comparisons. {W}e found that pastures (n=52, mean age = 17.6years) had slightly higher {SOC} stocks than forest (+6.8 +/- 3.1%), whereas croplands (n=18, mean age = 8.7years) had lower {SOC} stocks than forest (-8.5 +/- 2.9%). {A}nnual precipitation and {SOC} stocks under forest had no effect on the {SOC} changes in the agroecosystems. {F}or croplands, we found a lower {SOC} loss than other meta-analyses, but the short time period after deforestation here could have reduced this loss. {T}here was no clear effect of tillage on the {SOC} response. {M}anagement of pastures, whether they were degraded/nominal/improved, had no significant effect on {SOC} response. {C}-13 measurements on 16 pasture chronosequences showed that decay of forest-derived {SOC} was variable, whereas pasture-derived {SOC} was less so and was characterized by an accumulation plateau of 20 {M}g {SOC} ha(-1) after 20years. {T}he large uncertainties in {SOC} response observed could be derived from the chronosequence approach, sensitive to natural soil variability and to human management practices. {T}his study emphasizes the need for diachronic and long-term studies, associated with better knowledge of agroecosystem management.},
  keywords = {annual crop ; carbon storage ; chronosequence ; deforestation ; grassland ; humid tropics ; rainforest ; soil organic matter ; soil tillage ; delta {C}-13 ; {BRESIL} ; {COLOMBIE} ; {GUYANE} {FRANCAISE} ; {SURINAME} ; {AMAZONIE}},
  booktitle = {},
  journal = {{G}lobal {C}hange {B}iology},
  volume = {21},
  numero = {7},
  pages = {2773--2786},
  ISSN = {1354-1013},
  year = {2015},
  DOI = {10.1111/gcb.12906},
  URL = {https://www.documentation.ird.fr/hor/fdi:010064720},
}