1城市水土保持刻不容缓太原市城区位于晋中断陷盆地的北端，北、东、西三面环山，所陷盆地随汾河由北向南逐渐开阔延伸，呈箕箕型地形特征。东为太行山，海拔一般在1500m左右，属黄土丘陵地类，多年平均土壤侵蚀模数为4000t／km2·a；西为吕梁山，平均海拔在1500m以上，属土石 1 Urban Water and Soil Conservation Necessarily Necessary The urban area of ​​Taiyuan is located at the northern end of the Jinzhong rift basin, surrounded by mountains on three sides of the north, east and west. The subsidence basin gradually extends from north to south along the Fen River and is characterized by a dustpan topography. The east is the Taihang Mountains, the elevation is generally about 1500m, belongs to loess hilly land, the average annual soil erosion modulus 4000t / km2 · a; west of Luliang Mountain, with an average elevation of 1500m above, is an earth and stone