气候变化领域集成服务门户(CCPortal): The impact of urbanization on water vulnerability: A coupled human-environment system approach for Chennai, India

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DOI	10.1016/j.gloenvcha.2012.10.002
	The impact of urbanization on water vulnerability: A coupled human-environment system approach for Chennai, India
	Srinivasan V.; Seto K.C.; Emerson R.; Gorelick S.M.
发表日期	2013
ISSN	0959-3780
卷号	23 期号:1
英文摘要	While there is consensus that urbanization is one of the major trends of the 21st century in developing countries, there is debate as to whether urbanization will increase or decrease vulnerability to droughts. Here we examine the relationship between urbanization and water vulnerability for a fast-growing city, Chennai, India, using a coupled human-environment systems (CHES) modeling approach. Although the link between urbanization and water vulnerability is highly site-specific, our results show some generalizable factors exist. First, the urban transformation of the water system is decentralized as irrigation wells are converted to domestic wells by private individuals, and not by the municipal authority. Second, urban vulnerability to water shortages depends on a combination of several factors: the formal water infrastructure, the rate and spatial pattern of land use change, adaptation by households and the characteristics of the ground and surface water system. Third, vulnerability is dynamic, spatially variable and scale dependent. Even as household investments in private wells make individual households less vulnerable, over time and cumulatively, they make the entire region more vulnerable. Taken together, the results suggest that in order to reduce vulnerability to water shortages, there is a need for new forms of urban governance and planning institutions that are capable of managing both centralized actions by utilities and decentralized actions by millions of households. © 2012 Elsevier Ltd.
英文关键词	Drought; India; Sustainable; Urbanization; Vulnerability; Water
学科领域	adaptive management; drought; land use change; nature-society relations; urban planning; urban population; urbanization; vulnerability; water resource; well water; Chennai; India; Tamil Nadu
语种	英语
scopus关键词	adaptive management; drought; land use change; nature-society relations; urban planning; urban population; urbanization; vulnerability; water resource; well water; Chennai; India; Tamil Nadu
来源期刊	Global Environmental Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/117980
作者单位	Pacific Institute for Studies in Environment, Development and Security, United States; Yale School of Forestry and Environmental Studies, United States; University of California, Berkeley, United States; Dept. of Environmental Earth System Science, Stanford University, United States
推荐引用方式 GB/T 7714	Srinivasan V.,Seto K.C.,Emerson R.,et al. The impact of urbanization on water vulnerability: A coupled human-environment system approach for Chennai, India[J],2013,23(1).
APA	Srinivasan V.,Seto K.C.,Emerson R.,&Gorelick S.M..(2013).The impact of urbanization on water vulnerability: A coupled human-environment system approach for Chennai, India.Global Environmental Change,23(1).
MLA	Srinivasan V.,et al."The impact of urbanization on water vulnerability: A coupled human-environment system approach for Chennai, India".Global Environmental Change 23.1(2013).