克里雅绿洲浅层地下水特征与表层土壤特征的相互关系研究——基于最优插值预测

发布时间：2019-08-19 08:20

【摘要】：通过对特定区域由点至面的预测,进而研究典型干旱区绿洲浅层地下水特征与表层土壤特征的空间分布变化规律及两者相互影响,对干旱区水土关系的科学认识具有重要意义。根据最优的空间插值预测方法对克里雅绿洲整体的浅层地下水特征与表层土壤特征(地下水埋深、电导率、水温,表层土壤含水率、电导率、土温)进行预测,并在全局尺度上对以上的水土指标进行相关性研究。结果表明:(1)克里雅绿洲区域地下水埋深主要在3 m以下,地下水电导率主要在5 mS/cm以下,地下水温度主要在15℃以下,表层土壤含水量主要在50%以下,表层土壤电导率主要在2.5 mS/cm以下,表层土壤温度主要在13℃以下,浅层地下水特征与表层土壤特征的空间分布均呈现一定的变化规律。(2)浅层地下水特征与表层土壤特征间均具有空间与统计相关性,地下水电导率与表层土壤盐分的线性回归拟合结果最好(R~2=0.721 8),回归方程为y=0.144x+0.172 1,可以作为实际预测中的参考依据。
[Abstract]:Through the prediction from point to surface in a specific area, the spatial distribution and variation of shallow groundwater characteristics and surface soil characteristics in typical arid areas and their interaction are studied, which is of great significance to the scientific understanding of soil and water relationship in arid areas. According to the optimal spatial interpolation prediction method, the characteristics of shallow groundwater and surface soil (groundwater depth, conductivity, water temperature, surface soil moisture content, conductivity, soil temperature) of Kriya oasis are predicted, and the correlation of the above soil and water indexes is studied on the global scale. The results show that: (1) the groundwater depth is less than 3 m, the groundwater conductivity is below 5 mS/cm, the groundwater temperature is below 15 鈩，

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