中国岩溶2018，Vol.37Issue(6)：819-826,8.DOI:10.11932/karst20180603
降雪及旅游活动对金佛山表层岩溶泉水化学的影响
Effects of snowfall and tourism activities on water chemistry of surface karst springs in the Jinfo Mountain
摘要
Abstract
The Jinfo Mountain is a world natural heritage which attracts many tourists to visit its scenic spots in winter. The purpose of this work is to explore the effects of snowfall and tourism activities on the surface karst springs in this area. We conducted high-frequency automatic sampling monitoring of chemical changes in water springs during a large-scale snowfall in December 2014, obtaining high resolution hydrochemical change curves, which were compared with physical and chemical characteristics of atmospheric precipitation, soil water and sewage. Principal component analysis (PCA) was used to determine the main factors affecting spring water chemistry. The physical and chemical indexes of spring water show significant dynamic changes in different stages of snowfall, at the beginning of snow cover period (2014-12-10 to 2014-12-14), most of the hydrochemical indicators were stable largely; afterwards until the large area of snow melted (2014-12-15 to 2014-12-28), the amount of tourism emissions increased, spring water temperature, flow rate, turbidity, salinity and ion content exhibited an upward trend, while pH, dissolved oxygen showed a downward trend, and hydrochemical indicators changed greatly. During the melting of the snow, the melt water supply increased the dissolved oxygen and turbidity of the spring water, and other water chemical indicators first decreased and then rose. Principal component analysis shows that the sewage input of tourism activities was the primary factor causing the change of spring water quality, and the contribution rate of principal components reached 59％. The dilution effect of snow melting can relieve the groundwater pollution situation in the basin to a certain extent, which is the second influencing factor, with a contribution rate 31％.关键词
季节性降雪/旅游排污/表层岩溶泉/PCA/金佛山Key words
snow event/tourist drainage/epikarst spring/PCA/Jinfo Mountain分类
天文与地球科学引用本文复制引用
刘跃,贺秋芳,于正良,赵瑞一,张陶,刘宁坤..降雪及旅游活动对金佛山表层岩溶泉水化学的影响[J].中国岩溶,2018,37(6):819-826,8.基金项目
重庆市自然科学基金项目(CSTC2016JCYJYS0003) （CSTC2016JCYJYS0003）
岩溶动力学重点实验室基金项目(KDL201402) （KDL201402）
中央高校基本科研业务费专项(XDJK2017D024)资助成果 （XDJK2017D024）
