干旱区生态环境知识资源中心(Arid): Comprehensive ecological risk assessment for semi-arid basin based on conceptual model of risk response and improved TOPSIS model-a case study of Wei River Basin, China

Arid

DOI	10.1016/j.scitotenv.2020.137502
	Comprehensive ecological risk assessment for semi-arid basin based on conceptual model of risk response and improved TOPSIS model-a case study of Wei River Basin, China
	Yang, Tao 1,2; Zhang, Qian 1; Wan, Xuhao 1; Li, Xiaoping 1,2; Wang, Yiyan 1; Wang, Wei 1
通讯作者	Yang, Tao
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	719
英文摘要	Comprehensive ecological risk assessment is of great significance for the restoration of watershed ecosystem health, and the appropriate and effective assessment method is the premise of ecological risk assessment. In this study, the conceptual model of risk response was developed by identification of ecological risk sources, stressors, endpoints and the corresponding response mechanism as well as the improved TOPSIS model based on Canberra distance and the combinatorial weighting method based on AHP and Critic were combined for the assessment. According to the three aspects of agriculture, industrial and urbanization, the occurrence mechanism of comprehensive ecological risk of rivers in semi-arid areas was analyzed. Furthermore, twenty-four indexes were selected to establish the index system and the Wei River Basin was taken as an example to verify the model. The results of comprehensive ecological risk assessment and stressor analysis showed that the deterioration of water quality (enrichment of heavy metals) and the decrease of benthos integrity were the two main risk factors for the increase of comprehensive ecological risk in Wei River Basin. And the regulation of ecological risk for the Wei River Basin is improvement of water quality and biotic integrity. (C) 2020 Elsevier B.V. All rights reserved.
英文关键词	Improved TOPSIS model Ecological risk response mechanism Risk source identification Comprehensive risk assessment system
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000521936300033
WOS关键词	PHYSICAL HABITAT ASSESSMENT ; HEAVY-METAL POLLUTION ; SURFACE SEDIMENTS ; RIPARIAN VEGETATION ; ECOSYSTEM HEALTH ; SHAANXI PROVINCE ; STREAM SEDIMENTS ; CLIMATE-CHANGE ; INDEX ; PATTERN
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/2XILL650/319288
作者单位	1.Shaanxi Normal Univ, Sch Geog & Tourism, Xian 710119, Shaanxi, Peoples R China; 2.Int Joint Res Ctr Shaanxi Prov Pollutant Exposure, Xian 710062, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Yang, Tao,Zhang, Qian,Wan, Xuhao,et al. Comprehensive ecological risk assessment for semi-arid basin based on conceptual model of risk response and improved TOPSIS model-a case study of Wei River Basin, China[J],2020,719.
APA	Yang, Tao,Zhang, Qian,Wan, Xuhao,Li, Xiaoping,Wang, Yiyan,&Wang, Wei.(2020).Comprehensive ecological risk assessment for semi-arid basin based on conceptual model of risk response and improved TOPSIS model-a case study of Wei River Basin, China.SCIENCE OF THE TOTAL ENVIRONMENT,719.
MLA	Yang, Tao,et al."Comprehensive ecological risk assessment for semi-arid basin based on conceptual model of risk response and improved TOPSIS model-a case study of Wei River Basin, China".SCIENCE OF THE TOTAL ENVIRONMENT 719(2020).