唐山市平原区地下水脆弱性评价研究

Study on the groundwater vulnerability assessment in Tangshan plain area.

根据唐山市平原区的具体状况 ,选择地下水埋深等 6个参数作为该地区地下水脆弱性评价因子 ,评价因子的评分体系通过数值模拟建立 ,权重体系由主成分分析和因子分析得到 .利用建立的评价体系 ,结合GIS技术对该地区的地下水脆弱性进行评价 ,并得到地下水脆弱性分布图 .评价结果与该地区实测及预测的硝酸盐浓度分布状况吻合较好 .

Depth to groundwater and other five parameters are selected to assess groundwater vulnerability in Tangshan plain area according to the specific conditions of this area. Numeric modelling is performed to obtain the rating system. Principal component analysis and factor analysis are used to get the weighting system. Based on the established assessment system and GIS technique, groundwater vulnerability assessment is conducted in this area and a groundwater vulnerability distribution map is developed which is a useful tool for groundwater protection. The assessment results are well consistent with the measured and predicted nitrate concentrations in this area.