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Water 2017, 9(4), 267; doi:10.3390/w9040267

Climate Change and Its Influence on the Karst Groundwater Recharge in the Jinci Spring Region, Northern China

1
College of Water Resources Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2
Shanxi Institute of Water Resources, Taiyuan 030001, China
3
School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou 450046, China
4
Department of Earth Sciences, University of the Western Cape, Cape Town 7535, South Africa
*
Author to whom correspondence should be addressed.
Academic Editor: Marco Franchini
Received: 15 December 2016 / Revised: 2 March 2017 / Accepted: 29 March 2017 / Published: 10 April 2017
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Abstract

Due to climate change and human activities over the last fifty years, the spring flow volume of karst groundwater has sharply diminished in China. Climate change is one of the critical factors that initiates a series of karst hydrogeologic and water ecological environmental problems, because the precipitation shows a decreasing trend while the temperature shows an increasing trend. The Jinci Spring is one of the largest, most famous springs in northern China. This study employed data from the Taiyuan Meteorological Station and ten precipitation stations in and around the Jinci Spring region as well as the runoff data gathered from two hydrological monitoring stations during 1960–2012. The sliding average method and the Mann-Kendall test were used to analyze the variation tendency of precipitation, temperature, and land evaporation in this area. Finally, the following were calculated: the varying pattern of the karst groundwater recharge amount and the response of the recharge amount to precipitation, land evaporation, and river runoff by quantitative analysis. The results indicated that the precipitation and land evaporation amount decreased at first and then subsequently increased. Likewise, the variation trend of the karst groundwater recharge amount in the spring region was roughly consistent with the precipitation variation pattern. In contrast, the temperature displayed an increasing trend. The climate change resulted in a reduction of the karst groundwater recharge amount, and it had the greatest influence in the 1990s, which caused the karst groundwater recharge amount to decrease 26.75 mm as compared to that of the 1960s (about 39.68% lower than that of the 1960s). The Jinci Spring had zero flow during this period. The reduction in precipitation was one of main factors that caused the cutoff of the Jinci Spring. View Full-Text
Keywords: karst groundwater; climate change; trend test; abrupt change test karst groundwater; climate change; trend test; abrupt change test
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Jia, Z.; Zang, H.; Zheng, X.; Xu, Y. Climate Change and Its Influence on the Karst Groundwater Recharge in the Jinci Spring Region, Northern China. Water 2017, 9, 267.

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