干旱区生态环境知识资源中心(Arid): Wind erosion response to past and future agro-pastoral trajectories in the Sahel (Niger)

Arid

DOI	10.1007/s10980-021-01359-8
	Wind erosion response to past and future agro-pastoral trajectories in the Sahel (Niger)
	Pierre, C.; Hiernaux, P.; Rajot, J. L.; Kergoat, L.; Webb, N. P.; Toure, A. Abdourhamane; Marticorena, B.; Bouet, C.
通讯作者	Pierre, C (corresponding author), Univ Paris Est Creteil, Univ Paris, Sorbonne Univ,INRAE, IEES Paris Inst Ecol & Environm Sci Paris,IRD,CNR, 4 Pl Jussieu, F-75005 Paris, France.
来源期刊	LANDSCAPE ECOLOGY
ISSN	0921-2973
EISSN	1572-9761
出版年	2022
英文摘要	Context Wind erosion plays a major role in land degradation in semi-arid areas, especially in the Sahel. There, wind erosion is as sensitive to land use and land management as to climate factors. Future land use intensification may increase wind erosion and induce regional land degradation. Objective We aimed to estimate wind erosion responses to changing land management in a Sahelian region. Methods We defined land use intensification scenarios for a study site in southwestern Niger for two historical situations (1950s and 1990s), and two alternative prospective scenarios (2030s: extensive or intensive). We simulated vegetation growth and horizontal sediment flux of wind erosion for the corresponding landscapes. Results Annual 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. For 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. Realistic sets of practices had as large an influence as the largest theoretical range of practices on the variability of annual horizontal sediment flux. This variability was as large as that due to meteorological conditions. Conclusions This 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.
英文关键词	Wind erosion Agro-pastoral practices Land management scenarios Land use Modelling Sahel
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000715632600001
WOS关键词	WEST-AFRICAN MONSOON ; SOIL-EROSION ; LAND-USE ; SYSTEMS ; COVER ; MODEL ; ADAPTATION ; VEGETATION ; SURFACE ; CYCLE
WOS类目	Ecology ; Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography ; Geology
来源机构	French National Research Institute for Sustainable Development
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/367691
作者单位	[Pierre, C.; Rajot, J. L.; Bouet, C.] Univ Paris Est Creteil, Univ Paris, Sorbonne Univ,INRAE, IEES Paris Inst Ecol & Environm Sci Paris,IRD,CNR, 4 Pl Jussieu, F-75005 Paris, France; [Hiernaux, P.] Pastoc, 30 Chemin Jouanal, F-82160 Caylus, France; [Rajot, J. L.; Bouet, C.] Univ Paris, F-75013 Paris, France; [Rajot, J. L.; Bouet, C.] Univ Paris Est Creteil, CNRS, LISA, F-75013 Paris, France; [Kergoat, L.] Univ Toulouse, CNRS, GET Geosci Environm Toulouse, IRD, 14 Ave Edouard Belin, F-31400 Toulouse, France; [Webb, N. P.] USDA ARS Jornada Expt Range, Las Cruces, NM USA; [Toure, A. Abdourhamane] Univ Abdou Moumouni, Fac Sci & Tech, Dept Geol, Niamey 10662, BP, Niger; [Marticorena, B.] Univ Paris Est Creteil, F-94010 Creteil, France; [Marticorena, B.] Univ Paris, CNRS, LISA, F-94010 Creteil, France
推荐引用方式 GB/T 7714	Pierre, C.,Hiernaux, P.,Rajot, J. L.,et al. Wind erosion response to past and future agro-pastoral trajectories in the Sahel (Niger)[J]. French National Research Institute for Sustainable Development,2022.
APA	Pierre, C..,Hiernaux, P..,Rajot, J. L..,Kergoat, L..,Webb, N. P..,...&Bouet, C..(2022).Wind erosion response to past and future agro-pastoral trajectories in the Sahel (Niger).LANDSCAPE ECOLOGY.
MLA	Pierre, C.,et al."Wind erosion response to past and future agro-pastoral trajectories in the Sahel (Niger)".LANDSCAPE ECOLOGY (2022).