干旱区生态环境知识资源中心(Arid): Do the ecosystems of Gansu Province in Western China?s crucial ecological security barrier remain vulnerable? Evidence from remote sensing based on geospatial analysis

Arid

DOI	10.1016/j.jclepro.2023.136740
	Do the ecosystems of Gansu Province in Western China?s crucial ecological security barrier remain vulnerable? Evidence from remote sensing based on geospatial analysis
	Guo, Zecheng; Xie, Yaowen; Guo, Hui; Zhang, Xueyuan; Wang, Haoran; Bie, Qiang; Xi, Guilin; Ma, Changhui
通讯作者	Xie, YW
来源期刊	JOURNAL OF CLEANER PRODUCTION
ISSN	0959-6526
EISSN	1879-1786
出版年	2023
卷号	402
英文摘要	Under the dual stress of climate change and human activities, ecological problems such as vegetation degra-dation, soil erosion, and desertification have disturbed the balance of the human-land relationship, damaged the ecosystem integrity, and seriously affected the sustainable development of human societies and ecological en-vironments. Scientifically assessing the stability or vulnerability of an ecosystem is a key prerequisite for measuring its degree of sustainability. Ecological vulnerability (EV) provides a reasonable quantitative pathway as the comprehensive result of ecosystem change. However, to meet the challenges of variable external inter-ference, the capabilities of existing assessment frameworks require further improvement. This study constructed a novel comprehensive remote sensing index directly based on land surface characteristics-regional ecological vulnerability index (REVI) and assessed the spatio-temporal characteristics and driving mechanism of EV in Gansu Province during 2000-2020. The applicability of three objective methods, namely principal component analysis, entropy weighing method, and spatial distance model, was verified against field data, and the effec-tiveness of implementing major ecological programs was discussed. The results showed that: (1) EV intensity of the study area remained at a relatively high level, and its spatial distribution exhibited apparent latitude -longitude zonality and spatially stratified heterogeneity; (2) EV decreased in 41.926% of the study area but continued to increase in 1.235%, and it exhibited an overall conversion pattern of significant decrease in large areas and increase in small areas in the past 21 years; (3) the effectiveness of ecological programs determined their impacts on EV, regulating the contribution and interaction of water resources, vegetation cover, soil degradation, and human activities, and promoting sustainable development of the ecosystem in a vulnerable cycle; and (4) urban expansion was achieved at the cost of occupying cropland and ecological land, and became the primary cause for the increased EV. The framework presented in this study is suitable for large-scale EV assessment, even at the global scale, with higher application potential. The results have important reference value for ecological protection, land resource utilization and sustainable development of similar vulnerable ecosystems, which are helpful for formulating sustainable and coordinated development policies.
英文关键词	Ecological vulnerability Landsat Google earth engine Ecological programs Gansu Province
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000958659700001
WOS关键词	LAND DEGRADATION ; NORTHWEST CHINA ; CLIMATE-CHANGE ; LOESS PLATEAU ; RIVER-BASIN ; INDEX ; MANAGEMENT ; RESOURCES ; IMPACT ; REGION
WOS类目	Green & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences
WOS研究方向	Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397219
推荐引用方式 GB/T 7714	Guo, Zecheng,Xie, Yaowen,Guo, Hui,et al. Do the ecosystems of Gansu Province in Western China?s crucial ecological security barrier remain vulnerable? Evidence from remote sensing based on geospatial analysis[J],2023,402.
APA	Guo, Zecheng.,Xie, Yaowen.,Guo, Hui.,Zhang, Xueyuan.,Wang, Haoran.,...&Ma, Changhui.(2023).Do the ecosystems of Gansu Province in Western China?s crucial ecological security barrier remain vulnerable? Evidence from remote sensing based on geospatial analysis.JOURNAL OF CLEANER PRODUCTION,402.
MLA	Guo, Zecheng,et al."Do the ecosystems of Gansu Province in Western China?s crucial ecological security barrier remain vulnerable? Evidence from remote sensing based on geospatial analysis".JOURNAL OF CLEANER PRODUCTION 402(2023).