Journal of Food, Agriculture and Environment

Water security evaluation system based on Water Poverty Index

Author(s):

Li Gong *, Chunling Jin, Wen Sun

Recieved Date: 2013-06-20, Accepted Date: 2013-09-24

Abstract:

Comprehensive evaluation of water security is the premise and foundation to establish the strategic planning and make decision about the regional water security. On the bases of the factors affecting urban water security, this study introduced the Water Poverty Index to evaluate urban water security. Take the external conditions and internal factors affecting urban water security into account, this study analysed the water security evaluation indexes in the Water Poverty Index according to actual conditions of China, and then proposed new values of them which were suitable to cities in the country. Resource (R), access (A), use (U), capacity (C) and environment (E) were chosen as subsystems. Five subsystems and their 20 sub-indexes were used to establish the evaluation index system. On the basis of Chinese social and economic development level, the water security degrees are divided to 5 levels: very safe, safe, basically safe, unsafe and extremely unsafe. Finally, take 14 cities in Gansu province for instance. The water security status and causes were analysed and classified to five kinds of results. Meanwhile, WPI value of the whole Gansu province is 49.1. Chinese WPI range given by CEH is from 48 to 55.9. It shows that water security of Gansu province is in the level of basically safe. At the same time, this value is close to unsafe level. Therefore, it is important to improve current water security status. The calculation examples show that the model can clearly reflect the factors and their characteristics affecting urban water security. The system provides a basis to constitute warning mechanisms for  urban water security.

Keywords:

Water Poverty Index (WPI), Chinese, evaluation, urban water security

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Journal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 3&4
Category: Environment
Pages: 2521-2526

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