干旱区生态环境知识资源中心(Arid): Evaluation of oasis ecosystem risk by reliability theory in an arid area: A case study in the Shiyang River Basin,China

Arid

DOI	10.1016/S1001-0742(07)60085-0
	Evaluation of oasis ecosystem risk by reliability theory in an arid area: A case study in the Shiyang River Basin,China
	LI Weide; LI Zizhen; WANG Jiquan
来源期刊	Journal of Environmental Sciences
ISSN	1001-0742
出版年	2007
卷号	19 期号:4 页码:508-512
英文摘要	Ecosystem risk is a new concept in understanding environmental problems. Studying and developing quantitative methods for regional ecosystem risk analysis is very important. In this study, some new indicators and methods for measuring oasis ecosystem risk are established using reliability theory. These indicators are linked to water resource, which is the key restricting factor in arid area oasis ecosystems. They have clear meanings and can also be compared in different arid area oases. A case study in the Liangzhou oasis of the Shiyang River Basin shows how to calculate these ecosystem risk indicators. The results of the case study are as follows: the reliability indicator, risk indicator, stability indicator, and integrated loss indicator of the Liangzhou oasis are 0.686, 0.334, 0.743, and 0.301, respectively. This means that the reliability degree of the oasis's ecosystem safety is 68.3%; the degree of risk that it is unsafe is 33.4%; the stability degree is 74.3%; and 30.1% of the oasis's area is supported by over-exploiting underground water and damaging the lower reaches of the ecosystem. This result can be used as a guide in controlling and managing ecosystem risk in the research area.
英文关键词	ecosystem risk sustainable development Shiyang River Basin risk analysis
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:2838975
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334941
作者单位	LI Weide, Institite of Cold and Arid Regions Environment and Engineering, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; LI Zizhen, Institite of Cold and Arid Regions Environment and Engineering, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; WANG Jiquan, Institite of Cold and Arid Regions Environment and Engineering, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.
推荐引用方式 GB/T 7714	LI Weide,LI Zizhen,WANG Jiquan. Evaluation of oasis ecosystem risk by reliability theory in an arid area: A case study in the Shiyang River Basin,China[J],2007,19(4):508-512.
APA	LI Weide,LI Zizhen,&WANG Jiquan.(2007).Evaluation of oasis ecosystem risk by reliability theory in an arid area: A case study in the Shiyang River Basin,China.Journal of Environmental Sciences,19(4),508-512.
MLA	LI Weide,et al."Evaluation of oasis ecosystem risk by reliability theory in an arid area: A case study in the Shiyang River Basin,China".Journal of Environmental Sciences 19.4(2007):508-512.