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华南降雨强度大且雨季长,导致严重土壤侵蚀发生的潜在可能性极大。全省各地的最大降雨强度超过了花岗岩地区土壤的入渗率,显然,降雨不是华南土壤侵蚀的限制因素。就全省范围来说,降雨的地方性差异与侵蚀区分布之间,不存在明显的关系。但对于一定地区,降雨的时间和量值对土壤侵蚀也起着控制的作用。
The high rainfall intensity in southern China and the long rainy season lead to great potential for serious soil erosion. The maximum rainfall intensity across the province outweighs the infiltration rate of soils in the granite area. Clearly, rainfall is not a limiting factor for soil erosion in South China. As far as the province is concerned, there is no obvious relationship between the local differences in rainfall and the distribution of erosion areas. However, for certain areas, the timing and magnitude of rainfall play a controlling role in soil erosion.