榆阳区土壤侵蚀研究

土地利用结构特征可反映某个区域的土壤侵蚀状况,也是水土保持研究的内容之一。通过运用遥感影像得出榆阳区土壤侵蚀分级图,并根据公式得出土壤侵蚀严重指数。运用层次分析法计算出水田、平缓旱地、坡耕地、林地、草地、水体、建设用地和未利用地在土壤侵蚀强度评价中所占权重。通过对2005-2008年榆阳区土地利用结构特征值的分析得出榆阳区土壤侵蚀有所好转,为今后土地利用结构调整和土地开发整理提供参考。

Study on Soil erosion in Yuyang

The used-land structure characteristics reflect an area situation of soil erosion,is also one of the studied content of soil and water conservation.By using remote sensing image,it draws the Yuyang soil erosion grade figure,and according to the formula grading figure that serious soil erosion index.Analytical hierarchy process(AHP) is calculated the paddy fields,dry land,and a gentle slope,forest land,meadow,water,land for construction purposes and did not use the land in the soil erosion intensity in the evaluation of weight.The soil erosion in Yuyang is improved by analysis of the characteristic value of the used-land structure from 2005 to 2008.It provides the reference for the future land use structure adjustment and land development.