@article{fdi:010094274,
  title = {{W}ind erosion dynamics associated with land use on sandy soils under heavy anthropogenic pressure ({S}outhwestern {N}iger)},
  author = {{I}de, {I}. and {T}oure, {A}. {A}. and {R}ajot, {J}ean-{L}ouis and {M}articorena, {B}. and {A}damou, {S}. {N}. and {P}ierre, {C}. and {H}assane, {B}. and {G}arba, {Z}.},
  editor = {},
  language = {{ENG}},
  abstract = {{H}eavy anthropic pressures and rainfall crises have led to land degradation and increased the intensity of wind erosion in arid areas. {T}his erosion transports soil particles and associated nutrients and contributes to the degradation of cultivated and grazed land. {T}he aim of this study is to assess the intensity of wind flux in relation to land use on the {N}amaro dune ridge, with sandy soils representative of south-western {N}iger in central {S}ahel. {I}ts surface is essentially dominated by millet fields and rangelands. {T}he methodological approach consisted in monitoring soil cover by vegetation on a rangeland and a millet field, meteorological parameters (rainfall, wind speed, and direction) and associated wind erosion flux over two annual cycles. {P}recise, concomitant measurements of saltation and wind speed were used to determine wind erosion threshold velocity for both land uses. {W}ind erosion flux was measured using sand traps ({BSNE}) and saltation detectors: sensit and saltiphone. {T}he potential wind erosion flux was also determined. {T}he two land uses show the lowest land cover at the end of the dry and the beginning of the rainy season when the winds are strongest. {I}t appeared that the millet field is at all times more covered by vegetation than the rangeland. {T}his difference can be explained by the high grazing pressure on the dune complex, which is maintained throughout the year. {A}s a result, the threshold velocity, which is always lower on the rangeland, was 6.1 m s-1 compared with 7.3 m s-1 on the millet field. {F}rom {J}uly to {D}ecember, as vegetation developed, threshold velocities increased, reaching 9.6 and 11.1 m s-1, respectively, on the grazing land and the field. {I}n agreement with the vegetation cover, dust uplift potential and threshold velocities, horizontal erosion flux and saltation were at least two times greater on the rangeland than on the millet field. {T}his is the first time in the {S}ahel that measurements have shown that rangelands can be more erodible than cultivated fields for the same weather conditions. {F}or better rangeland soil management, it will be necessary to control grazing pressure with an implication of local people. {I}t is also important to minimize grazing pressure during the rainy season. {D}uring this period, high grazing pressure will result in poor vegetation cover and soils that are more susceptible to wind erosion from the start of the dry season.},
  keywords = {aeolian flux ; land-cover ; livestock grazing ; {S}ahel ; wind erosivity ; {NIGER} ; {AFRIQUE} {SUBSAHARIENNE} ; {SAHEL}},
  booktitle = {},
  journal = {{L}and {D}egradation and {D}evelopment},
  volume = {[{E}arly access]},
  numero = {},
  pages = {[14 p.]},
  ISSN = {1085-3278},
  year = {2025},
  DOI = {10.1002/ldr.70037},
  URL = {https://www.documentation.ird.fr/hor/fdi:010094274},
}