The runoff of Weihe river is extremely sensitive to precipitation variation in Hulu river tributary valley, secondly to that in Bangsha river tributary valley.

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。

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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.

汾河支流北石河岔上断面以上流域由林地和无林地插花分布组成。

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