| 汪明冲,潘竟虎,赵军.基于GIS与RS的土壤侵蚀变化定量监测——以黄土高原水保二期世行贷款庆城项目区为例[J].干旱地区农业研究,2007,(6):116~121 |
| 基于GIS与RS的土壤侵蚀变化定量监测——以黄土高原水保二期世行贷款庆城项目区为例 |
| Quantitative survey of the soil erosion change based on GIS and RS — Take the Qingcheng area as an example |
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| DOI：10.7606/j.issn.1000-7601.2007.06.24 |
| 中文关键词: 土壤侵蚀 通用土壤流失方程 定量监测 遥感 GIS |
| 英文关键词:universal soil loss equation soil erosion quantitative survey remote sensing GIS |
| 基金项目:甘肃省黄土高原水保二期世行贷款监测评价项目 |
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| 中文摘要: |
| 在GIS软件ArcMap和ArcView的支持下,建立研究区的空间数据库,利用GIS软件的栅格数据空间分析功能,将研究区空间离散化为10 m×10 m的栅格,生成通用土壤流失方程RUSLE所需的各因子栅格图;借助GIS软件的地图代数运算,将各因子连乘,得到土壤侵蚀量栅格图,在此基础上对侵蚀栅格图进行分类,获得土壤侵蚀等级图。将得到的土壤侵蚀图与土地利用图和坡度图叠加,获得不同土地利用方式下和不同坡度下的土壤侵蚀量,据此对土壤侵蚀与土地利用以及土壤侵蚀与坡度之间的关系进行分析,以期为水土流失的防治和保护规划方案的制定提供科学依据。 |
| 英文摘要: |
| Desktop GIS software,i.e.ArcMap and ArcView,is used to establish the spatial database,including boundary of study area,landuse,soil category,plant,etc.Based on the GIS's function of raster spatial analysis,the study area is discreted into uniform grids with the cell of 10 m×10 m.According to the database management function of GIS software,RUSLE is integrated with ArcView and ArcGIS to predicted soil erosion in the study area after reading the database document and selecting reasonable RUSLE factor values.With the help of map algebra operation of the GIS software,we have got the grid diagram of soil erosion quantity by multiplying each factor.Carrying on a classification towards the grid diagram of erosion,we acquired the grade diagram of the soil erosion,too.Then we use the diagram of soil erosion to get the overlay between it and the diagram of landuse,also between the diagram of DEM slope.Ultimately,we have acquired the soil erosion quantity based on the condition of different landuse and different slope.This text also gets the relationships between soil erosion and land using type,slope. |
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