@article{fdi:010072061, title = {{D}ata synthesis of carbon distribution in particle size fractions of tropical soils: {I}mplications for soil carbon storage potential in croplands}, author = {{F}ujisaki, {K}enji and {C}hapuis {L}ardy, {L}ydie and {A}lbrecht, {A}lain and {R}azafimbelo, {T}. and {C}hotte, {J}ean-{L}uc and {C}hevallier, {T}iphaine}, editor = {}, language = {{ENG}}, abstract = {{O}rganic carbon saturation in soils refers to the theoretical maximum soil organic carbon ({SOC}) that can be associated with and stabilized on fine silt plus clay particles ({F} < 20 mu m). {W}e reviewed the literature dealing with {SOC} distribution between soil fractions to evaluate carbon saturation for tropical soils and estimate the {C} storage potential of cropland. {W}e collected 258 data points on {SOC} distribution between soil fractions in tropical soils from 84 sites in 27 countries. {W}e used boundary line analysis to estimate the maximum stabilized {SOC} depending on soil group, clay type and land use. {SOC} storage potential was calculated as the {SOC} saturation deficit, the difference between the actual {SOC} content and the maximum stabilized {SOC} content. {W}e found that the maximum {SOC} in the fine fraction of tropical soils (53 g {C} kg(-1) fine fraction) was lower than previous assessments of global {SOC} storage scale based mainly on temperate soils. {T}he {F} < 20 mu m fractions were closer to {SOC} saturation in forest soils than in croplands. {T}he cropland had a higher soil {C} storage potential, but changing agricultural management practices did not fill the deficit that is calculated using the whole dataset. {T}he deficit was much lower when it was estimated with grassland or cropland data only: this provides a more realistic estimate for {SOC} storage potential for croplands. {T}he {SOC} content in the coarser fraction ({F} > 50 mu m) did not depend on soil texture and significantly contributed to the total {SOC}, especially in sandy soils (41.3%). {T}his is affected by changes in agricultural management practices. {W}e concluded that, although the aim of increasing {SOC} stabilization originally arose from climate change mitigation strategies, it must now be more viewed as being more relevant to food security and local adaptation to climate change.}, keywords = {{S}oil organic carbon ; {S}oil carbon saturation ; {F}ine particles ; {P}articulate ; organic matter ; {T}ropics ; {B}oundary line analysis ; {AMERIQUE} {DU} {SUD} ; {AFRIQUE} {SUBSAHARIENNE} ; {ANTILLES} ; {ZONE} {TROPICALE}}, booktitle = {}, journal = {{G}eoderma}, volume = {313}, numero = {}, pages = {41--51}, ISSN = {0016-7061}, year = {2018}, DOI = {10.1016/j.geoderma.2017.10.010}, URL = {https://www.documentation.ird.fr/hor/fdi:010072061}, }