干旱区生态环境知识资源中心(Arid): Analysis of spatiotemporal changes and driving factors of desertification in the Africa Sahel

Arid

DOI	10.1016/j.catena.2022.106213
	Analysis of spatiotemporal changes and driving factors of desertification in the Africa Sahel
	Yang, Zuowei; Gao, Xin; Lei, Jiaqiang; Meng, Xiaoyu; Zhou, Na
通讯作者	Gao, X
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2022
卷号	213
英文摘要	The transitional characteristics of desert grasslands in the Sahel determine the ecosystem's fragility, which is extremely susceptible to the expansion and reversal of land desertification under the influence of climate change and anthropogenic activities. Accordingly, monitoring desertification dynamics is essential to combat this process. Based on Moderate Resolution Imaging Spectroradiometer (MODIS) data, this study analysed the applicability of different feature space models to monitor desertification levels in the Sahel from 2000 to 2020, revealing the optimal monitoring model, analysing the spatiotemporal changes and primary driving factors. The results were as follows: In the Sahel, the albedo-modified soil adjusted vegetation index (MSAVI) based on the point-to-point model is the best for desertification monitoring, with an overall accuracy of 86.78%. Generally, the level of desertification was reduced from 2000 to 2020, the area of extremely severe desertification decreased by retreating northward; and the areas of light, moderate, and severe desertification increased slowly by expanding northward. Light, moderate, and severe desertification lands were more sensitive to climate change and anthropogenic activities, undergoing greater change intensity. Precipitation was the most influential factor determining the spatial distribution of desertification in the Sahel, with anthropogenic activities also having a significant effect on the desertification level. This study comprehensively analysed desertification patterns in the Sahel and identified the primary driving factors, which are essential to inform Sahelian desertification control mechanisms in the future.
英文关键词	Desertification albedo-MSAVI point-to-point model Spatiotemporal changes Driving factors Sahel
类型	Article
语种	英语
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000790436500002
WOS关键词	HORQIN SANDY LAND ; CLIMATE-CHANGE ; MONITORING DESERTIFICATION ; SAHARA DESERT ; RELATIVE ROLE ; TRENDS ; SIZE ; DEGRADATION ; DYNAMICS ; MALI
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392090
推荐引用方式 GB/T 7714	Yang, Zuowei,Gao, Xin,Lei, Jiaqiang,et al. Analysis of spatiotemporal changes and driving factors of desertification in the Africa Sahel[J],2022,213.
APA	Yang, Zuowei,Gao, Xin,Lei, Jiaqiang,Meng, Xiaoyu,&Zhou, Na.(2022).Analysis of spatiotemporal changes and driving factors of desertification in the Africa Sahel.CATENA,213.
MLA	Yang, Zuowei,et al."Analysis of spatiotemporal changes and driving factors of desertification in the Africa Sahel".CATENA 213(2022).