| 张新林,张建国,陈亚新,史海滨,陈慧新.盐溶质及其离子品位空间变异性的Co—Kriging估计[J].水利学报,1998,29(6):0035-0041 |
| 盐溶质及其离子品位空间变异性的Co—Kriging估计 |
| Co-Kriging estimation on the spatial variability of soil salt solute and ions grade |
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| DOI： |
| 中文关键词: 盐溶质 离子品位 Co—Kriging估计 多元地质统计学 空间变异性 |
| 英文关键词: 1.Inner Mongolia Institute of Agriculture and Animal Husbandry 2.Bayanner League Institute of Water conservancey Research |
| 基金项目: |
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| 摘要点击次数: 2078 |
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| 中文摘要: |
| 根据土壤特性的空间变异性和大型灌区水盐监测需要，本文用多元地质统计学(MVG)的Co—Kriging(CK)方法，研究了引黄灌区内2种尺度条件下So2-4—Cl-型盐渍化土壤盐溶质及其主要离子品位的协同估计，用3种单变量和一组多变量预测主变量信息不足时的不同目标，结果表明：用野外易测的EC值可精确估计Cl-；用EC&Cl-组成的多变量可估计较难测定的K++Na+品位；由小尺度获得的CK模型可精确用于中尺度估计并对求解CK方程的有关技术作了探讨，有助于MVG理论在土壤—水科学领域的应用与开拓。 |
| 英文摘要: |
| According to the demand of the spatial variability research of soil characteristics and soil water-salt monitoring in a large irrigation district, the Co-Kriging estimation of soil salt solute and its major ions grade in a So(2-为上标，4为下标)－Clˉ kind of the saline and under two scales in the Hetao irrigation district, China, are done by Co-Kriging of the multi-variable geostastics (MVG). Three kinds of single variable and a group of multi-variable are used to forecast main variable information. The result show that grade of clˉ can be estimated accurately by EC which is easy to be measured in the field, the grade of K(+为上标)+Na(+为上标)can be estimated by using multi-variable group of EC&Clˉ, the MVG model of the small-scale can be accurately estimated in the middle-scale. The solution method of CK equation is studied in this paper. |
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