试译
沿线穿越的地貌单元较复杂，主要为中低山～丘陵地貌，间夹高差及范围不等的山间盆地及狭长河谷，地形起伏较大。其中中低山地貌，海拔标高一般在500～1300m，相对高差150～420m，山间河谷深切，“V”型谷发育，水流湍急；丘陵地貌区一般丘顶浑圆，相对高差50～250m，河谷低平，河曲发育。山间盆地地形较平缓，多为村镇或垦为农田。 区内水系发育，多属沙溪水系。各水系在低山丘陵区呈树枝状，河谷深切，岸坡陡峭，断面呈“V”字型，水流湍急，山间盆地区河谷相对宽阔，断面多呈“U”字型，水流较缓。各水系多年平均径流模数23.69～35.25升/秒.平方公里。流量受降雨量影响明显，年内分配不均，汛期多集中在5～8月，占全年总流量的70%以上。
The physiognomy along the line is quite intricate and the hypsography is various that low hills, middle hills and foothills are among with mountainous basins and narrow valleys in a variety of height and range. The elevations of the low and middle hills are normally from 500 m to 1300m high, with a relative height balance of 150m to 420m. The V-shaped mountainous valleys in this area are deep and water flows quickly. Foothills with a relative height balance of 50m –250m own dome top and valleys with curved meander here are low and flat. The mountainous basins are so flat and even to be assarted into farming land and most of villages or towns are developed here.
Water system in this district is rich and most of them originate from SHAXI water system. Branch-shaped water systems are distributed among low hills and foothills with quick current, deep valleys, steep slopes and V-shaped sections. Valleys with U-shaped sections in mountainous basins are much wider relatively and water flows slower. The module of annual average runoff of water systems is about 23.69-35.25 litre/m. km2 . The runoff is markedly affected by rainfall and the annual distribution is not equal. Flood season is mainly from May to August and the runoff accounts for more than 70% of the total volume in a year.