A DPSIR Model for Vulnerability Assessment of Water Resources System in Changsha-Zhuzhou-Xiangtan Areas

Abstract:

Water resources vulnerability is a common problem that every country in the world encounters nowadays. DPSIR (Driving forces-Pressure-State-Impact-Response) model is used to do the water resources system vulnerability assessment of Changsha-Zhuzhou-Xiangtan areas in this paper. Meanwhile, the establishment of vulnerability assessment model and evaluation process are described in detail based on the comprehensive identification of the vulnerability factors of the water cycle sub-system, the social-economic subsystem and the environment sub-system, combing the Analytic Hierarchy Process (AHP) method with entropy method, weights of water resources vulnerability factors are obtained, as well as a comprehensive evaluation on the water resources system vulnerability. The conclusion shows that the vulnerability of water resources system in Chang-Zhu-Tan is serious with several insecurity factors, so the vulnerability assessment can provide a technical guidance for the sustainable development of the water resources system in Chang-Zhu-Tan areas.