基于GIS的两种土壤水分模拟方法的对比研究  

Comparative study on two methods of soil moisture simulation based on GIS

作　　者：王洪明[1] 杨勤科[1] 姚志宏[1] 

机构地区：[1]西北大学城市与资源学系,陕西西安710127

出　　处：《陕西师范大学学报（自然科学版）》2008年第S2期57-59,共3页Journal of Shaanxi Normal University：Natural Science Edition

基　　金：国家重点基础研究发展计划(973计划)(2007CB407203)

摘　　要：借助数字地形分析和GIS方法,将野外采样和空间分析相结合,研究了利用区域土壤水分空间统计模型和地形湿度指数模型模拟土壤水分的方法。并在此基础上,以陕北黄土高原为实验样区,利用实测的土壤水分数据分别构建两种模型对土壤水分进行模拟,分析了不同模型模拟土壤水分的精度,对两种方法模拟土壤水分的效果进行了评价。Using GIS and digital terrain analysis methods,combined with soil water sampling data and space analysis,the soil moisture simulation methods using regional soil moisture space statistical model and topographic wetness index model were studied.And taking the Loess Plateau experimental area in northern Shaanxi province as an example,two models were built to simulate the soil moisture using measured soil moisture data,the accuracy of two soil moisture models were analyzed,and the results of two methods for soil moisture simulation were evaluated.

关 键 词：地形湿度指数模型 区域土壤水分 空间统计模型 

分 类 号：S152.7[农业科学—土壤学] P208[农业科学—农业基础科学]