干旱区生态环境知识资源中心(Arid): The dominant influencing factors of desertification and ecological risk changes in Qinghai Area of Qilian Mountains National Park: Climate change or human activity?

Arid

DOI	10.1016/j.jenvman.2024.121335
	The dominant influencing factors of desertification and ecological risk changes in Qinghai Area of Qilian Mountains National Park: Climate change or human activity?
	Liu, Zijin; Si, Jianhua; Jia, Bing; He, Xiaohui; Zhou, Dongmeng; Wang, Chunlin; Zhu, Xinglin; Qin, Jie; Ndayambaza, Boniface; Bai, Xue
通讯作者	Si, JH
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN	0301-4797
EISSN	1095-8630
出版年	2024
卷号	362
英文摘要	Transitional features of desert environments partially determine the risks associated with ecosystems. Influenced by climate change and human activities, the variability and uncertainty of desertification levels and ecological risks in the Qinghai Area of Qilian Mountain National Park (QMNPQA) has become increasingly prominent. As a critical ecological barrier in northwest China, monitoring desertification dynamics and ecological risks is crucial for maintaining ecosystem stability. This study identifies the optimal monitoring model from four constructed desertification monitoring models and analyzes spatiotemporal changes in desertification. The spatial and temporal changes in ecological risks and their primary driving factors were analyzed using methods such as raster overlay calculation, geographic detector, cloud model, and trend analysis. The main conclusions are as follows: The desertification feature spatial model based on GNDVI-Albedo demonstrates better applicability in the study area, with an inversion accuracy of 81.24%. The levels of desertification and ecological risks in QMNPQA exhibit significant spatial heterogeneity, with a gradual decrease observed from northwest to southeast. From 2000 to 2020, there is an overall decreasing trend in desertification levels and ecological risks, with the decreasing trend area accounting for 89.82% and 85.71% respectively, mainly concentrated in the southeastern and northwestern parts of the study area. The proportion of areas with increasing trends is 4.49% and 7.05% respectively, scattered in patches in the central and southern edge areas. Surface temperature (ST), Digital Elevation Map (DEM), and Green normalized difference vegetation index (GNDVI) are the most influential factors determining the spatial distribution of ecological risks in QMNPQA. The effects of management and climatic factors on ecological risks demonstrate a significant antagonistic effect, highlighting the positive contributions of human activities in mitigating the driving effects of climate change on ecological risks. The research results can provide reference for desertification prevention and ecological quality improvement in QMNPQA.
英文关键词	Desertification Ecological risk Spatial and temporal variability Drive factors Qinghai area of qilian mountains national park
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001250192200001
WOS关键词	SPATIOTEMPORAL CHARACTERISTICS ; CHINA
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404475
推荐引用方式 GB/T 7714	Liu, Zijin,Si, Jianhua,Jia, Bing,et al. The dominant influencing factors of desertification and ecological risk changes in Qinghai Area of Qilian Mountains National Park: Climate change or human activity?[J],2024,362.
APA	Liu, Zijin.,Si, Jianhua.,Jia, Bing.,He, Xiaohui.,Zhou, Dongmeng.,...&Bai, Xue.(2024).The dominant influencing factors of desertification and ecological risk changes in Qinghai Area of Qilian Mountains National Park: Climate change or human activity?.JOURNAL OF ENVIRONMENTAL MANAGEMENT,362.
MLA	Liu, Zijin,et al."The dominant influencing factors of desertification and ecological risk changes in Qinghai Area of Qilian Mountains National Park: Climate change or human activity?".JOURNAL OF ENVIRONMENTAL MANAGEMENT 362(2024).