伊洛河流域（偃师—巩义段）地下水污染风险性评价与防治建议

地下水污染具有隐蔽性和延时性，一旦水体遭受污染将很难修复，不仅会影响所在地区人民的用水安全、破坏城乡生态、降低耕地土壤环境质量，而且还会影响农畜产品质量。综合分析了研究区水文地质、地质及自然条件，参考DRASTIC评价指标，在实测及收集资料的基础上，选择7个影响地下水防污性能的因素评价地下水脆弱性，并结合土地利用方式、地下水环境质量现状、地下水开采强度等因素评价地下水污染风险性，按综合指数将该区地下水污染风险划分为5个等级，分别为地下水污染高风险区、较高风险区、中等风险区、较低风险区、低风险区，并针对各风险区的主要地下水污染问题，提出适宜的地下水污染防治对策，为行政主管部门对地下水保护和利用提供科学依据。

Risk assessment and prevention and control suggestion of ground water pollution in Yiluo River Basin （Yanshi-Gongyi section）

Groundwater pollution has concealment and delay，once the water is polluted，it will be difficult to repair，not only affect the water safety of the people in the area，destroy the urban and rural ecology，reduce the soil environmental quality of arable land，but also affect the quality of agricultural and livestock products.The author comprehensively analyzed the hydrogeology，geology and natural conditions of the study area，and refereed to the drastic evaluation index，on the basis of the measured and collected data，selected 7 influence factors of antifouling performance assessment of groundwater vulnerability of groundwater，and combining the way of land use，groundwater environment quality present situation，groundwater exploitation intensity of groundwater pollution risk factors such as evaluation.According to the comprehensive index，the risk of groundwater pollution in this area was divided into five grades，which are high risk area，relatively high risk area，medium risk area，relatively low risk area and low risk area，and the appropriate prevention and control measures of groundwater pollution were put forward according to the main groundwater pollution problems in each risk area.The competent administrative departments shall provide scientific basis for the protection and utilization of groundwater.