GIS-Based Quantitative Study of Soil Erosion in Taiyuan City

Based on GIS and RS,aquantitative research on soil erosion in Taiyuan City is undertaken by RUSLE.The paper analyses the impact factors of soil erosion.At last,a new classification of soil erosion in Taiyuan City is put forward.The results show that most part of Taiyuan City are dominated by little or slight erosion,which is mainly distributed in the forest area in the middle and southern regions and in the arable land such as terrace(except slope land)in the eastern and southern regions,accounting for over half of the total area,while the intense soil erosion is mainly taken place in the north and the remote marginal area. The most severe erosion is found in the unused land,such as wild grassland and bare land,less severe erosion in the construction land and arable land,and the slight soil erosion in the forest.Generally,the soil erosion in Taiyuan City is acceptable and land utilization is suitable,while the part of severely soil erosion is not ignorable.