基于浅层地下水特征因子构建的内梅罗指数法在东营市海水入侵评价中的应用

本文选取浅层地下水特征因子（Cl-、SO₄2-、TDS、γClγHCO₃、SAR）作为参评因子，将内梅罗指数法应用于东营市海水入侵的调查评价中。其评价结果显示，70个调查点位中高达83%的浅层地下水受到了海水入侵，其中严重入侵占比为56%。空间插值分析表明:东营市超过90%的国土面积处于严重入侵等级，海水入侵程度由南向北呈带状分布，由陆向海方向逐级增强，域内4个地下水漏斗中心区已有3个受到海水入侵影响。通过与模糊综合评价法进行对比以及与东营市海水入侵现状进行一致性分析，结果表明只要筛选合适的地下水特征因子，内梅罗指数法可以用于海水入侵评价。

Application of Nemerow index method based on characteristic factors of shallow groundwater in seawater intrusion evaluation of Dongying

Nemerow index method based on characteristic factors of shallow groundwater, such as Cl-, SO₄2-, TDS, γCl/γHCO₃ and SAR was introduced to investigate seawater invasion of Dongying.The current results indicated that most of the sampling points were influenced by seawater intrusion, accounting for 83% in 70 survey sites, 56% of which were seriously invaded.According to spatial interpolation analysis from GIS, more than 90% areas of Dongying were in a high seawater-invasion level, and the extent of seawater intrusion presented a zonal distribution from south to north, increasing gradually from land to sea.In addition, three in four groundwater funnel centers had been affected by seawater intrusion.Compared with fuzzy comprehensive evaluation method and analyzed of agreement with the current situation, the results showed that Nemerow index method could be used for seawater intrusion evaluation if appropriate characteristic factors of groundwater were selected.