干旱区生态环境知识资源中心(Arid): Spatial and temporal dynamics of desertification and its driving mechanism in Hexi region

Arid

DOI	10.1002/ldr.4407
	Spatial and temporal dynamics of desertification and its driving mechanism in Hexi region
	Zhang, Jun; Guan, Qingyu; Du, Qinqin; Ni, Fei; Mi, Jimin; Luo, Haiping; Shao, Wenyan
通讯作者	Guan, QY
来源期刊	LAND DEGRADATION & DEVELOPMENT
ISSN	1085-3278
EISSN	1099-145X
出版年	2022
卷号	33 期号:17 页码:3539-3556
英文摘要	Investigating the spatio-temporal patterns of desertification and its driving mechanisms is crucial for efforts to improve the ecology and environment and combat desertification. Based on meteorological and satellite remote sensing data, this paper analyzed the dynamic characteristics of desertification in the Hexi region of arid and semiarid land in Northwest China from 2000 to 2018 using a dimidiate pixel model; revealed the relationship between desertification evolution characteristics and climatic variations and anthropogenic events based on the change characteristics of net primary productivity (NPP); and then clarified the response of desertification to climatic variations and anthropogenic events using a geodetector model. Outcomes show that: (1) overall desertification in Hexi region is at a serious level, but during the study period, severe desertification decreased, mainly concentrated in the east and southwest, and non-desertification increased, mainly near the Qilian Mountains and Shule River basin; (2) there were both spatial and temporal dynamics during the study period, with severe desertification decreasing by 11% and moderate, light, and non-desertification increasing by 3%, 5%, and 3% respectively; (3) during 2000-2005, human activities, climate change, and their joint contribution to desertification reversal were similar, i.e., 23%, 40%, and 36%, and the former two contributed equally to desertification expansion, 38% and 41%, respectively; climate change predominated in desertification reversal in 2005-2010 and 2015-2018, while human activities predominated in desertification expansion; human activities predominated in desertification reversal and climate change predominated in desertification expansion in 2010-2015. This research can provide a theoretical basis and technical support for ecological and environmental management and sustainable socio-economic development in arid and semiarid regions.
英文关键词	anthropogenic events climatic variations desertification driving factors
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000843676400001
WOS关键词	NET PRIMARY PRODUCTIVITY ; LAND DEGRADATION ; NORTHERN CHINA ; AEOLIAN DESERTIFICATION ; QUANTITATIVE ASSESSMENT ; VEGETATION COVER ; SEMIARID REGIONS ; NORTHWEST CHINA ; CLIMATE CHANGES ; SANDY LAND
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393729
推荐引用方式 GB/T 7714	Zhang, Jun,Guan, Qingyu,Du, Qinqin,et al. Spatial and temporal dynamics of desertification and its driving mechanism in Hexi region[J],2022,33(17):3539-3556.
APA	Zhang, Jun.,Guan, Qingyu.,Du, Qinqin.,Ni, Fei.,Mi, Jimin.,...&Shao, Wenyan.(2022).Spatial and temporal dynamics of desertification and its driving mechanism in Hexi region.LAND DEGRADATION & DEVELOPMENT,33(17),3539-3556.
MLA	Zhang, Jun,et al."Spatial and temporal dynamics of desertification and its driving mechanism in Hexi region".LAND DEGRADATION & DEVELOPMENT 33.17(2022):3539-3556.