干旱区生态环境知识资源中心(Arid): Did water diversion projects lead to sustainable ecological restoration in arid endorheic basins? Lessons from long-term changes of multiple ecosystem indicators in the lower Heihe River Basin

Arid

DOI	10.1016/j.scitotenv.2019.134785
	Did water diversion projects lead to sustainable ecological restoration in arid endorheic basins? Lessons from long-term changes of multiple ecosystem indicators in the lower Heihe River Basin
	Shen, Qin 1; Ma, Ying 2
通讯作者	Ma, Ying
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	701
英文摘要	Ecological water diversion projects (EWDPs) are crucial for dryland ecosystem restoration in arid endorheic basins. Comprehensive and in-depth evaluations of ecological effects and especially the potential risks of EWDPs on long-term ecosystem changes were limited in previous studies. In this study, spatio-temporal variations in multiple indicators (land use/cover, landscape pattern and vegetation cover) derived from Landsat images were integrated to detect ecosystem changes from 1990 to 2015 in the lower Heihe River Basin (HRB), China, where an EWDP was conducted by the Chinese government in 2000. The results showed that the EWDP prevented ecological degradation and effectively restored the arid oasis ecosystem. From 2000 to 2010, the transformation from unused land to natural vegetation and wetlands, was the major land use/cover change; the degree of landscape fragmentation decreased, and the regional normalized difference vegetation index (NDVI) increased significantly. However, the EWDP did not restore the ecosystem to the status in 1990, and some vegetation degradation occurred after 2010, with approximately 38% of the study area showing significant decrease in NDVI. Human interventions, especially overexpansion of cultivated oases, which restricted ecological water use, and construction of artificial canals, which reduced groundwater recharge, resulted in the browning trend from 2010 to 2015. Therefore, the EWDPs did not definitely lead to sustainable ecological restoration and ecosystem development. The quantification results can provide significant implications for water resources management and ecosystem planning to prevent ecological degradation in the study area. The multi-indicator method with long-term and high-resolution dataset used here can be adapted to other arid regions for comprehensively evaluating the ecological restoration ability of the EWDP. (C) 2019 Elsevier B.V. All rights reserved.
英文关键词	Ecological restoration Vegetation cover Ecosystem change Long-term series Water diversion project Arid endorheic basin
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000498801400022
WOS关键词	VEGETATION DYNAMICS ; NORTHWEST CHINA ; CLIMATE-CHANGE ; TARIM RIVER ; LAND-COVER ; RESOURCES ; TRENDS ; IMPACTS ; REGION ; DELTA
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2020-01-20
来源机构	中国科学院地理科学与资源研究所 ; 北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312535
作者单位	1.Beijing Forestry Univ, State Forestry Adm, Key Lab Forest Resources & Environm Management, Beijing 100083, Peoples R China; 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Shen, Qin,Ma, Ying. Did water diversion projects lead to sustainable ecological restoration in arid endorheic basins? Lessons from long-term changes of multiple ecosystem indicators in the lower Heihe River Basin[J]. 中国科学院地理科学与资源研究所, 北京林业大学,2020,701.
APA	Shen, Qin,&Ma, Ying.(2020).Did water diversion projects lead to sustainable ecological restoration in arid endorheic basins? Lessons from long-term changes of multiple ecosystem indicators in the lower Heihe River Basin.SCIENCE OF THE TOTAL ENVIRONMENT,701.
MLA	Shen, Qin,et al."Did water diversion projects lead to sustainable ecological restoration in arid endorheic basins? Lessons from long-term changes of multiple ecosystem indicators in the lower Heihe River Basin".SCIENCE OF THE TOTAL ENVIRONMENT 701(2020).