学科分类
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2 个结果
  • 简介:ThispaperdescribestheuseoftheArc/InfoandArcViewGIStoolstoestimatesoilerosionwithUniversalSoilLossEquation(USLE).Calculationsarebedonebyusingcapabilitiesavailable.Thisstudystartwithadigitalelevationmodel(DEM)ofShaanxi,whichwascreatedbydigitizingcontourandspotheightsfromthetopographicmapon1∶250000scaleandgridthemesfortheUSLEKandCfactors.ItisnoteworthythatUSLEKcanbeobtainedbyaddingtheKfactorasanattributetoasoiltheme'stable.TheCcanbeobtainedfromtablesorusingtheinformationaboutlanduseandmanagementgivenbyUSLEprogram.AlandusethemecanbeusedtoaddtheCfactorsasanattributefield.ThepurposeofthisstudyistoestablishspatialinformationofsoilerosionusingUSLEandGISanddiscusstheanalysisofthesoilerosionandslopefailuresinGISandformulatethepossibleframework.

  • 标签: 地理信息系统 GIS 估计 DEM 土壤侵蚀 数字高程模型
  • 简介:摘要本文以广河县为研究对象,以2013年LANDSAT的TM影像、地形数据、土壤资料等数据为基础,采用美国土壤保持局修订后的RUSLE模型,结合遥感技术对广河县土壤侵蚀变化做定量研究。

  • 标签: RUSLE模型 广河县 土壤侵蚀