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以黄河三角洲地区典型地块为研究区,运用经典统计学和地统计学相结合的方法研究了包括埋深和含盐量的地下水性质空间变异特征,绘制了各地下水特征的随机性和结构性的半方差图和空间分布图。结果表明:受不同尺度的结构性因素和随机性因素的共同作用,地下水埋深和含盐量均具有中等的变异强度和空间自相关性,地下水埋深的自相关距大于含盐量。对Kriging插值结果分析表明:地下水埋深的空间变异性受微地形因素及农田工程措施影响较大,长期的农业生产措施会影响地下水含盐量的空间分布,地下水含盐量空间变异性与埋深有一定的关联。地下水特征的空间结构性和定量化研究对黄河三角洲地区地下水资源评价、土壤的次生盐碱化防治及区域水盐运动调控有着直接的现实意义。
Taking the typical block in the Yellow River Delta as a study area, the spatial variability of groundwater properties including depth and salinity was studied by using the combination of classical statistics and geo-statistics, and the randomness and structure of the groundwater characteristics were plotted Semi-variance map and spatial distribution map. The results show that both groundwater depth and salinity both have medium intensity of variation and spatial autocorrelation due to the combination of structural and random factors of different scales. The self-correlation distance of groundwater depth is larger than salinity. Kriging interpolation results show that: the spatial variability of groundwater depth is affected by the micro-topography factors and farmland engineering measures, long-term agricultural production measures will affect the spatial distribution of groundwater salinity, spatial variability of groundwater salinity and buried Deeply related. The spatial structure and quantitative study of groundwater characteristics have direct and practical significance for the evaluation of groundwater resources, the prevention and control of secondary salinization of soil and the regulation of regional water and salt movement in the Yellow River Delta.