Research of Relationship Between Land Use and Soil Erosion in Yan’ an City
Based on GIS technology, the land use and current situation of soil erosion of Yan’ an City in 2009 was analyzed, and the relationships between them were studied by spatial overlay analysis. The results show that the land use of Yan’ an City is mainly composed of cultivated land, woodland and grassland, which makes up 97.4% of the total area;the main degree of soil erosion is micro?erosion and light erosion, accounting for 39.28% and 23.31% of the total area respectively;among the different land use types, town village and mining land are the maximally eroded with the erosion intensity comprehensive index of 6. 14; the forestland is the minimally eroded with the erosion intensity comprehensive index of only 1.83. Aiming at the erosion situation of Yan’ an City, optimizing the land use structure and improving the vegetation will prevent and control the soil and water loss problem.
soil erosionGIS technologyland useerosion intensityYan’ an City
国家科技期刊平台
NSTL
万方数据
维普
