气候变化领域集成服务门户(CCPortal): Quantifying urban water supply security under global change

CCPortal

DOI	10.1016/j.gloenvcha.2019.03.009
	Quantifying urban water supply security under global change
	Krueger E.; Rao P.S.C.; Borchardt D.
发表日期	2019
ISSN	0959-3780
EISSN	1872-9495
起始页码	66
结束页码	74
卷号	56 页码:66-74
英文摘要	Urban water supply security is commonly measured in terms of per capita water availability at the city level. However, the actual services that citizens receive are influenced by several components, including (1) a city's access to water, (2) infrastructure for its treatment, storage and distribution, (3) financial capital for building and maintaining infrastructure, and (4) management efficacy for regulating and operating the water system. These four types of “capital” are required for the provision of public water supply services. A fifth capital “community adaptation” is needed when public services are insufficient. Here, we develop and test an integrated framework for the quantification of urban water supply security based on these five capitals. “Security” involves three dimensions: 1) the level of system function (i.e., supply services); 2) risks to these services; and 3) robustness of system functioning. We apply this Capital Portfolio Approach (CPA) to seven urban case studies selected from a wide range of hydro-climatic and socio-economic regions on four continents. Detailed data on urban water infrastructure and services were collected in two cities, and key stakeholder interviews and household surveys were conducted in one city. Additional cities were assessed based on publicly available utility and globally available datasets. We find that in cities with high levels of public services, adaptive capacity remains inactive, while cities with high levels of water insecurity rely on community adaptation for self-provision of services. Inequality in the capacity to adapt leads to variable levels of urban water security and the vulnerability of the urban poor. Results demonstrate the applicability of the presented framework for the assessment of individual urban water systems, as well as for cross-city comparison of any type of cities. We discuss implications for policy and decision-making. © 2019 Elsevier Ltd
英文关键词	Adaptive capacity; Capital Portfolio Approach (CPA); Infrastructure; Institutions; Management; Risk; Robustness; Water resources
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geography
scopus关键词	accessibility; capital; global change; household survey; infrastructure; management; organization; risk; security; stakeholder; urban area; water availability; water resource; water supply
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/96844
作者单位	Helmholtz Centre for Environmental Research - UFZ, Department of Aquatic Ecosystem Analysis (ASAM), Permoserstr. 15, Leipzig, 04318, Germany; Lyles School of Civil Engineering, Purdue University, 550 Stadium Mall Drive, West Lafayette, IN 47907, United States; Lyles School of Civil Engineering and Department of Agronomy, Purdue University, 550 Stadium Mall Drive, West Lafayette, IN 47907, United States; Helmholtz Centre for Environmental Research – UFZ, Department of Aquatic Ecosystem Analysis (ASAM), Brueckstr. 3aMagdeburg 39114, Germany
推荐引用方式 GB/T 7714	Krueger E.,Rao P.S.C.,Borchardt D.. Quantifying urban water supply security under global change[J],2019,56:66-74.
APA	Krueger E.,Rao P.S.C.,&Borchardt D..(2019).Quantifying urban water supply security under global change.Global Environmental change,56,66-74.
MLA	Krueger E.,et al."Quantifying urban water supply security under global change".Global Environmental change 56(2019):66-74.