@article{fdi:010083368, title = {{W}ind erosion response to past and future agro-pastoral trajectories in the {S}ahel ({N}iger)}, author = {{P}ierre, {C}. and {H}iernaux, {P}. and {R}ajot, {J}ean-{L}ouis and {K}ergoat, {L}. and {W}ebb, {N}. {P}. and {T}oure, {A}. {A}. and {M}articorena, {B}. and {B}ouet, {C}hristel}, editor = {}, language = {{ENG}}, abstract = {{C}ontext {W}ind erosion plays a major role in land degradation in semi-arid areas, especially in the {S}ahel. {T}here, wind erosion is as sensitive to land use and land management as to climate factors. {F}uture land use intensification may increase wind erosion and induce regional land degradation. {O}bjective {W}e aimed to estimate wind erosion responses to changing land management in a {S}ahelian region. {M}ethods {W}e defined land use intensification scenarios for a study site in southwestern {N}iger for two historical situations (1950s and 1990s), and two alternative prospective scenarios (2030s: extensive or intensive). {W}e simulated vegetation growth and horizontal sediment flux of wind erosion for the corresponding landscapes. {R}esults {A}nnual amounts of horizontal sediment flux increased with land management changes from 1950s (nil flux) to 1990s (176 kg m(-1) yr(-1)) and 2030s (452 to 520 kg m(-1) yr(-)1), mostly because of differences in land use, declining soil fertility, and practices decreasing the dry vegetation. {F}or 2030s, intensive scenario exhibited larger vegetation yields than extensive conditions, but similar large values of horizontal sediment flux, thus questioning the sustainability of both scenarios. {R}ealistic sets of practices had as large an influence as the largest theoretical range of practices on the variability of annual horizontal sediment flux. {T}his variability was as large as that due to meteorological conditions. {C}onclusions {T}his study demonstrates that the environmental impact of land use and management practices, of which wind erosion is an aspect, must be assessed at the landscape scale to account for the variability in land cover and associated land management.}, keywords = {{W}ind erosion ; {A}gro-pastoral practices ; {L}and management scenarios ; {L}and use ; {M}odelling ; {S}ahel ; {NIGER} ; {ZONE} {SAHELIENNE} ; {FAKARA}}, booktitle = {}, journal = {{L}andscape {E}cology}, volume = {37}, numero = {2}, pages = {529--550}, ISSN = {0921-2973}, year = {2022}, DOI = {10.1007/s10980-021-01359-8}, URL = {https://www.documentation.ird.fr/hor/fdi:010083368}, }