基于修正RISKE模型的重庆岩溶地区地下水脆弱性评价  

Assessment of karst groundwater vulnerability in Chongqing based on revised RISKE model

作　　者：魏兴萍[1,2] 蒲俊兵[2] 赵纯勇[1] 

机构地区：[1]重庆师范大学地理与旅游学院、GIS应用研究重庆市重点实验室,重庆400047 [2]国土资源部/广西壮族自治区岩溶动力学重点实验室、联合国教科文组织国际岩溶中心、中国地质科学院岩溶地质研究所,桂林541004

出　　处：《生态学报》2014年第3期589-596,共8页Acta Ecologica Sinica

基　　金：重庆市自然科学基金资助项目(CSTC2012jjA80008);国家自然科学基金资助项目(41202135);国土资源部岩溶动力学重点实验室开放课题资助项目(KDL2011-08);校级GIS重点实验室开放课题资助项目

摘　　要：岩溶地下水脆弱性评价是保护、管理和利用岩溶地下水的基础与有效方法。我国西南岩溶区绝大多数地区由于缺少应有的地下水保护带,地下水比较容易受污染。运用修正的RISKE模型,对重庆岩溶地区地下水进行脆弱性评价。结果表明:岩溶在4个地区所占面积从高到低依次为渝东北(43.14%)、渝东南(42.82%)、渝东(9.82%)、渝西地区(4.22%)。重庆岩溶地区地下水脆弱性中度以上,面积比例由高到低依次为渝东南(33.29%)、渝东北(29.21%)、渝东(6.68%)、渝西地区(2.37%)。地下水水质检测由差到好依次为渝东南、渝东北、渝西和渝东地区。地下水脆弱性在空间分布上的特征不仅显示了岩性、土壤、落水洞、岩溶裂隙等自然特征对其脆弱性的影响,同时也反映了人类活动对地下水的影响。因此在自然条件无法改变的情况下,控制人类活动对地下水的污染就显得尤为重要。Assessment of karst groundwater vulnerability provides an efficient means for protection, management and utilization of karst groundwater resources. Groundwater tends to be polluted due to the lack of protection zoning in place over most karst area in southwest China. This paper reviews and adapts the RISKE model for a use in assessing the karst groundwater vulnerability in Chongqing. It is concluded that the distribution of karst areas in a decreasing order is identified as the Northeast（43.14% ）, the Southeast （ 42.82% ）, the east （ 9.82% ） and the west of Chongqing （ 4.22% ）, while the areas exceeding the medium vulnerability threshold are the Southeast（33.29%） ,the Northeast （29.21%）,the east （6. 68% ）and the west（ 2.37% ） in Chongqing. In terms of the groundwater quality, ranks from the worst to the best are the Southeast, the Northeast, the west and the east of Chongqing, respectively. It is further concluded that the spatial characteristics of the groundwater vulnerability in the areas is affected not only by the natural characteristics such as lithology,soil,sinkholes,karst fissure etc, but also by human activities. It is realistic that the control of human activitiesshould be prioritized in order to mitigate groundwater pollution.

关 键 词：RISKE模型 重庆岩溶地区 地下水 脆弱性评价 

分 类 号：P641.8[天文地球—地质矿产勘探]