This kind of "rolling erosion" phenomenon is outstanding and very serious on the sloping fields in mountain and hilly area, worthing our's attention.

这种“翻滚侵蚀”现象在山区、丘陵区、漫川漫岗区的坡耕地耕作中是十分突出和十分严重的，不能不引起我们对它的高度重视。

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West limestone dry stone mountain, central as the Loess Plateau hilly region and the Taiwan area, the eastern plains area, 731-1716 m above sea level in between.

西部为石灰岩干石山区，中部为黄土丘陵区和台塬区，东部为平原区，海拔高度在731-1716米之间。

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