摘要
花岗岩山地丘陵,是我国南方水土流失严重地区,年侵蚀模数可达8000～15000t/km^2。花岗岩风化壳极为发育,厚度可达60m以上,为严重的土壤侵蚀提供了丰富的固体物质。本文以福建长汀河田为例,介绍了花岗岩风化壳发育的条件和风化壳本身的基本特征,论述了风化壳各层土体缓和侵蚀力的作用和抵抗侵蚀力作用的机制,同时还对不同母岩风化壳抗侵蚀性能进行了对比分析。
The granite hilly area in South China is a region of severe soil erosion with annual erosion rate of 8000-15000 t/km2 . Thickness of the very developed weathered shell reaches more than 60m, which provides a plenty of erosible solid materials. In this paper the author has introduced the main characteristics of the weathered granite shell and conditions of its development, described the mechanism governing mitigation or resistance
of every soil layer of the weathered shell to erosion, and analysed their antierodibility through comparing of the weathered shells formed from different original rocks.
出处
《中国水土保持》
北大核心
1989年第12期53-56,共4页
Soil and Water Conservation in China
