Abstract: The middle and lower reaches of the Yangtze River is endowed with abundant surface and groundwater resource. However,when cities suffer from emergencies or extreme regional drought,the surface water resource could be depleted,which seriously threatens the social stability. Groundwater could be pumped from a relatively safe groundwater strategic reserve(GSR)to deal with the problem of water shortage. In this paper,the principles of choosing the site for GSR are put forward from utilization and security perspectives. An evaluation index system for the suitability(EVISS)of location selection of GSR was established by integrating expert advice and hierarchical analysis. The system contains 16 influence factors in aspects of groundwater supply capacity,impact of emergency use,social and economic development,and environmental disasters’ impact,etc. The weights of the influence factors were determined:aquifer storage capacity and emergency water supply time boasts the largest weight,reaching 0.2138 and 0.1530,respectively,while economic cost of emergency water supply has the minimum weight,only 0.0057. The research finding offers technical support for the planning and emergency use of GSR in the Yangtze River Basin.

Key words: groundwater resource, strategic reserve, analytic hierarchy process, emergency use, index system, middle and lower Yangtze River