The runoff of Weihe river is extremely sensitive to precipitation variation in Hulu river tributaryvalley, secondly to that in Bangsha river tributaryvalley.
葫芦河支流流域的降水量对径流量变化的影响最为敏感，其次是榜沙河支流流域的降水量。
2
The area above Chashang Section in the Beishi River Valley, a tributary of Fen River, is made up of forested and unforested lands in one and the other.