黄土地区土壤侵蚀强度模型分析  

The Model Analysis for Soil Erosion Intensity in Loess Regions

作　　者：付伟[1] 

机构地区：[1]新疆大学电子信息科学系

出　　处：《环境遥感》1995年第4期250-268,共19页

摘　　要：本文介绍了黄土丘陵沟壑区土壤侵蚀强度的模糊分析模型的构造原理和方法。利用模糊子集的理论建立了土壤侵蚀强度分级的隶属函数，构造了土壤侵蚀强度计算表，用该表计算得出了土壤侵蚀强度指数，并用模糊相容度的原理对土壤侵蚀强度进行分等定级。用该模型对陕北安塞县的土壤侵蚀进行了试验研究。试验结果表明，该模型的预测精度较高，能客观地反映黄土丘陵沟壑区土壤侵蚀强度的动态变化。This paper presents the approaches and principles for building Fuzzyanalysis model of soil erosion intensity in hills and gullies of loess regions.Withthe theories of Fuzzy Subset,the author builds the attribute function of soil ero-sion intensity,and designs the computing table for soil erosion intensity Using thecomputing table,the author obtains the indexes of soil erosion intensity and gradesand classsifies the intensity of soil erosion with the principles of Fuzzy compatibi-lity degree.With the model the author makes the test researches on soil erosion inAnsai County,north of Shanxi Province。The test results show that the model hasa high prediction precision, and can objectively reflect the dynamic states of soilerosion intensity in loess regions。

关 键 词：土壤侵蚀强度 模糊分析模型 黄土地区 

分 类 号：S157[农业科学—土壤学]