The temporal–spatial assessment of water scarcity with the Water Poverty Index: a study in the middle basin of the Heihe River, northwest China

Author:

Tang Xia12,Feng Qi1

Affiliation:

1. Key Laboratory of Ecohydrology of Inland River Basin, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Science, No. 260 West Donggang Road, Lanzhou 730000, Gansu, China

2. Lanzhou Literature and Information Center of Chinese Academy of Sciences, No. 8 Tianshui Middle Road, Lanzhou 730000, Gansu, China and University of the Chinese Academy of Science, Beijing 100049, China

Abstract

This paper details an application of the Water Poverty Index (WPI) to evaluate the state of water resources in an inland river basin using a case study of the Heihe River Basin (HRB) located in northwest China. The WPI includes five components (resources, access, capacity, use, and environment) and has 13 indicators; each indicator is assigned an equal weighting. The selected set of components and indicators was used to discuss the spatial and temporal variation of the water scarcity situation in the middle of the HRB for a 10-year assessment period. The results show that the water scarcity situation of the HRB is generally evolving in a positive way from 2001 to 2010. However, the WPI varied widely (from 24.6 to 66.5) at a spatial scale. The water situation was best maintained in Jiayuguan City, and it was most severe in Jiuquan City. These variations suggest that different cities require different policy intervention to improve the overall water situation. Overall, the WPI appears to be a reasonable approach to examine the water scarcity situation and help decision makers to better devise local policy.

Publisher

IWA Publishing

Subject

Water Science and Technology

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