华南地区,高温多雨,化学风化条件优越,又有易于风化的岩石基础和促进风化的地貌条件,因而风化向岩层深处发展,形成厚层的红色风化壳,这种厚层红色风化壳改变了原来岩体的坚硬特征,形成松软深厚的风化残积层(或残—坡积层)。根据现场观察,水土流失区的红色风化壳主要发育在花岗岩和红色岩系(地质条件)构成的丘陵台 In southern China, high temperature and rainy weather, excellent chemical weathering conditions, easily weathered rock foundation and weathering geomorphic conditions led to the weathering of the deep layers of the rock formation, forming thick red weathering crusts. This thick red weathering crust changed The original hard rock characteristics, the formation of soft and deep weathered residual layer (or residual - slope ply). According to the field observations, the red weathering crust in the soil and water loss area is mainly developed in the hilly platform composed of granite and red rock series (geological conditions)