What's worse, many people are cutting ting down increasing number of trees, causing soil erosion.

更糟的是，很多人都在削减婷下来越来越多的树木，造成水土流失。

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Silting in dams raise the erosion base. This can prevent guilybed from cutting down, and banks from expanding;

坝地淤积，抬高了侵蚀基准面，可以防止沟道下切和沟岩扩张；

youdao

Silting in dams raise the erosion base. This can prevent guilybed from cutting down, and banks from expanding;

坝地淤积，抬高了侵蚀基准面，可以防止沟道下切和沟岩扩张；

youdao