Erosion of the road embankment caused by rainstorm, is very serious in loess zone, even leading to road embankment collapse.

• 在黄土地区,植被恢复很慢,由于黄土本身的特性以及突发性的暴雨,对路堤边坡的冲蚀作用十分明显,甚至造成路基的坍塌。