Variation of karst spring discharge in the recent five decades as an indicator of global climate change: A case study at

Karst in Shanxi Province is representative of that in northern China, and karst water systems discharge in the form of springs that are among the most important sources for local water supply. Since the 1950s, attenuation has been the major trend of discharge variation of most karst springs at Shanxi. Based on the case study of 7 karst springs including Niangziguan, Xin'an, Guozhuang, Shentou, Jinci, Lancun, and Hongshan springs, the discharge variation process of karst springs was divided into natural fluctuation phase and anthropogenic impact phase. Discharge attenuation of the 7 karst springs was controlled mainly by climate and human activities, with their contributions being respectively about 60% and 40%. According to the difference of the effect of climate and human activities for each spring, attenuation modes of spring discharge fall into three types: natural process dominated attenuation type, exploitation induced process dominated attenuation type, and mixed attenuation type. The total restored discharge variation of 7 karst springs matched well with the global air temperature change in 1956―2000, clearly indicating the trend of global warming and aridity in the last several decades, and the analysis of discharge variation processes of karst springs can be used as a new tool for global change studies.

作 者： GUO Qinghai WANG Yanxin MA Teng LI Luxiu   作者單位： GUO Qinghai,WANG Yanxin,MA Teng(School of Environmental Studies, China University of Geosciences, Wuhan 430074, China)

LI Luxiu(Office of Water Resource Management of Shanxi Province, Taiyuan 030001, China) 

刊 名： 中國科學D輯（英文版）  SCI 英文刊名： SCIENCE IN CHINA (EARTH SCIENCES)  年，卷(期)： 2005 48(11)  分類號： P3  關鍵詞： karst   Shanxi   spring discharge   attenuation   climate   human activity   global change  

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