Climate change and its influence on the Karst groundwater recharge in the Jinci Spring Region, Northern China

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dc.contributor.authorJia, Zhenxing
dc.contributor.authorZang, Hongfei
dc.contributor.authorZheng, Xiuqing
dc.contributor.authorXu, Yongxin
dc.date.accessioned2017-04-22T10:01:55Z
dc.date.available2017-04-22T10:01:55Z
dc.date.issued2017
dc.description.abstractDue 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.en_US
dc.description.accreditationISIen_US
dc.identifier.citationJia, Z. et al. (2017). Climate change and its influence on the Karst groundwater recharge in the Jinci Spring Region, Northern China. Water 9: Art. No. 267en_US
dc.identifier.issn2073-4441
dc.identifier.urihttp://hdl.handle.net/10566/2748
dc.identifier.urihttp://dx.doi.org/10.3390/w9040267
dc.language.isoenen_US
dc.privacy.showsubmitterFALSE
dc.publisherMDPIen_US
dc.rights© 2017 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/).
dc.status.ispeerreviewedTRUE
dc.subjectKarst groundwateren_US
dc.subjectClimate changeen_US
dc.subjectTrend testen_US
dc.subjectAbrupt change testen_US
dc.titleClimate change and its influence on the Karst groundwater recharge in the Jinci Spring Region, Northern Chinaen_US
dc.typeArticleen_US

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