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An approach for estimating sustainable yield of karst water in data sparse regions
Authors:Dan Yin  Longcang Shu  Chundong Xu  Zhenlong Wang  Emmanuel Kwame Appiah-Adjei
Institution:(1) State Key Laboratory of Hydrology Water Resources and Hydraulic Engineering, Hohai University, Nanjing, China;(2) Water Conservancy and Hydropower Science Research Institute of Liaoning Province, Shenyang, China;(3) Survey and Design Institute of Nanjing Hydraulic Research Institute, Nanjing, China;(4) Key Laboratory of Water Conservancy and Water Resources of Anhui Province, Bengbu, China;(5) College of Hydrology and Water Resource, Hohai University, No. 1 Xikang Road, Nanjing, 210098, China
Abstract:This study presents an approach for transferring the qualitative analysis of groundwater sustainability for development to quantitative evaluation by an analogy of two similar regions. A concept of groundwater exploitation sustainability (GES), which is an evaluation index based on water supply capability, eco-geo-environment maintaining capability and the harmony between water and society, is put forward. The fuzzy analytic hierarchy process method is applied to calculate the GES for the Xiangshan and Dianchang karst groundwater sources in the Huaibei city, Anhui Province, China. The GES of the Xiangshan karst system was calculated to be 0.53 and represents medium exploitation sustainability, while that for the Dianchang is relatively high with a value of 0.70. These two karst systems are separate units but have similar hydrogeological conditions. The Dianchang area had limited groundwater observation data, while the Xiangshan area had long series of observation data, which enabled the computation of the sustainable yield. The sustainable yield of the Xiangshan karst area was used to calibrate the GES, and develop a linear equation between the GES and sustainable yield, which was used to calculate the sustainable yield of the Diangchang karst area as 40.4 million m3.
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