农田土壤水分和盐分空间分布的指示克立格分析评价  

Using indicator Kriging to analyze and evaluate spatial distributions of soil water and salt in field

作　　者：徐英[1] 陈亚新[2] 王俊生[1] 刘全明[2] 

机构地区：[1]扬州大学水利科学与工程学院,江苏扬州225009 [2]内蒙古农业大学水资源与水土工程研究所,内蒙古呼和浩特010018

出　　处：《水科学进展》2006年第4期477-482,共6页Advances in Water Science

基　　金：国家自然科学基金资助项目(51079013);扬州大学博士科研启动基金资助项目~~

摘　　要：运用非参数地质统计学的多元指示克立格法,结合单元指示克立格法,对黄河河套灌区55 hm2的盐渍化土地上两个比较关键时期的土壤水分和盐分进行空间分布的分析,给出了同一时期土壤水盐和不同时期土壤盐分满足一定标准的综合概率图,并借助该案例详细介绍了多元指示克立格的原理、步骤及应用范围。指示克立格方法为不同尺度(从农田到区域)上水土资源质量的评价提供了新的方法,能为水土资源的现代决策管理提供指导。The article analyzes the spatial distributions of the soil water and salt in the salinized field （55 hm^2） in Huanghe Hetao irrigation area during the two critical preiod by using the multiple-variable indicator Kriging and the univariate indicator Kriging procedures, and provides the combined probability map of the soil water and salt before summer irrigation and that of soil salt at two different periods based on the chosen criteria. With the example, the article introduces in detail the principle, steps and the scope of the application of MVIK procedure. The indicator Kriging procedures are very useful to evaluate watersoil resources quality at the different scales ranging from farms to regional levels and can be used as the guide for the decision- making and management of water-soil resources.

关 键 词：单元指示克立格 多元指示克立格 土壤水盐 空间变异性 

分 类 号：S152.7[农业科学—土壤学]