新疆克里雅绿洲地下水与表层土壤特征的最优插值

发布时间：2018-07-04 07:56

  本文选题：地下水 + 表层土壤　； 参考：《干旱区研究》2017年06期

【摘要】：选择合适的插值预测模型对揭示干旱区绿洲地下水与表层土壤特征空间变化特征具有重要意义。根据克里雅绿洲实测地下水(埋深、电导率、水温)与表层土壤(含水率、电导率、土温)数据,系统评价不同空间插值方法(RBF、IDW、Ordinary Kriging)对不同特征预测精度的影响。结果表明:克里雅绿洲区域地下水埋深主要在3 m以下,电导率在5 m S·cm-1以下,温度在15℃以下;表层土壤含水量主要在0.5以下,电导率在2.5 m S·cm-1以下,温度在13℃以下。地下水埋深采用RBF插值的精度较高,电导率采用IDW的精度较高,水温采用RBF的精度较高;表层土壤含水率采用Kriging插值的精度较高,电导率采用RBF的精度较高,土温采用RBF的精度较高;除土壤含水率外,其余指标采用对数转化后插值精度较高。
[Abstract]:It is of great significance to select the appropriate interpolation prediction model to reveal the spatial variation characteristics of groundwater and topsoil in oasis in arid area. Based on the measured data of groundwater (buried depth, conductivity, water temperature) and surface soil (water content, conductivity, soil temperature), the effects of different spatial interpolation methods (RBF / IDW ordinary Kriging) on the prediction accuracy of different characteristics were systematically evaluated. The results show that the groundwater depth is below 3 m, the conductivity is below 5 Ms cm-1, and the temperature is below 15 鈩，

本文编号：2095369