南方山区花岗岩风化壳崩岗侵蚀及其防治对策——以广东省五华县新一村为例

Landfall Erosion of Granite Weathering Crust in Mountain Areas in South China and Its Controlling Measures——With Xinyi Village, Wuhua County, Guangdong Province as An Example

崩岗侵蚀是我国南方山区最重要的水土流失形式,崩岗侵蚀的治理是水土流失治理的关键。本文以广东省韩江上游五华县新一村为例,论述了我国南方山区花岗岩风化壳崩岗侵蚀的特点,分析了花岗岩风化壳崩岗侵蚀特别发育与花岗岩风化壳——土壤性质的关系。并探讨了采用生物措施和工程措施相结合的方法治理花岗岩崩岗侵蚀的效果。

Landfall erosion is the most important type of soil erosion in the mountain areas of South China. The control over landfall erosion is the key to controlling water and soil erosion. This paper deals with the behaviours of landfall erosion in granite weathering crust in the mountain areas of South China with Xinyi village, Wuhua county, Guangdong Province in the upper reaches of the Hanjiang River as an example, and analyses the relationships of special development of landfall erosion of granite weathering crust and the nature of weathering crust soil. Also, it discusses the effects of controlling granite landfall erosion by the method of combination of biological measures with engineering practices.