Rainfall in Guangdong province, South China

Rainfall provides the primary mechanism for soil erosion in South China. Winter is the dry season. Spring rain is related to frontal depressions while many summer rain events are associated with typhoons and tropical depressions. All parts of Guangdong Province experience many intense rainstorms that have potential for soil erosion. At the regional level, trend surface analysis suggests highest rainfall at the central and southwestern belts, but there are strong rainfall anomalies due to the influence of topography and the funnelling of moist air flows. On a local scale, rainfall is not a limiting factor to soil erosion, and the zones of serious erosion coincide roughly with the outcropping of weathered granite.