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利用地统计学方法定量研究了额济纳绿洲地下水位埋深的空间异质性。结果表明:额济纳绿洲地下水位埋深分布有较大的空间异质性,地下水位埋深的理论模型为球体模型;额济纳绿洲地下水位埋深主要受结构性因子的影响;地下水位埋深的变程在22.6km左右。地下水位埋深的空间分布总体上表现为从南到北,从西向东逐渐增大的分布格局。局部分布上,在垂直河流方向地下水埋深呈两头深中间浅的“V”型结构,在平行河流方向地下水埋深呈逐渐变深的递增趋势。
The geostatistics method is used to quantitatively study the spatial heterogeneity of groundwater level in Ejina Oasis. The results show that there is great spatial heterogeneity in the depth of groundwater table in Ejina Oasis, and the theoretical model of groundwater depth is sphere model. The depth of groundwater table in Ejina Oasis is mainly affected by structural factors. Cheng is about 22.6km. The spatial distribution of groundwater table depth generally shows the distribution pattern that increases gradually from west to east from south to north. In the local distribution, groundwater depth in the direction of vertical river is in the shape of “V ” with two shallow depths in the middle and shallow, and the groundwater depth in the direction of parallel river is gradually deepening.