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本研究根据室内外对花岗岩及其风化壳测试的物理和化学特征，利用有关土壤抗冲性和抗侵性指标以及野外实测资料，对花岗岩风化壳的地球化学过程、形成条件及抗侵蚀特征进行了综合分析与评价．指出垂直节理发育的花岗岩体在持续的暖湿气候作用下形成的疏松深厚风化壳是土壤侵蚀特别是切沟和崩岗沟发育的物质基础．中粗晶花岗岩发育工壤表层砂砾含量高而粘粒少，抗侵蚀性弱，有机质矿质化快，土壤生态系统脆弱；加上风化壳中抗侵蚀性极弱的砂土层存在，这是导致花岗岩土壤侵蚀特别严重的内在原因．松耕土壤抗侵蚀能力仅为自然坡地未扰动土壤的１／１０，建议加强坡耕旱地地面覆盖．作者指出，土壤的抗侵蚀能力强弱是一个相对概念，其随侵蚀动力类型和强弱不同而显示不同的特征．在侵蚀动力较弱情况下，抗蚀性是影响土壤抗侵蚀性能的主要方面、在较强侵蚀动力下，土壤的抗冲性将上升为影响土壤抗侵蚀性能的主导方面．
Based on the physical and chemical characteristics of the granite and its weathering crust tested both indoors and outdoors, the geochemical process, formation conditions and erosion resistance of the granite weathering crust are studied by using the relevant indexes of soil anti-erosion and anti-invasion as well as the field data. A comprehensive analysis and evaluation. It is pointed out that the loose and thick weathered crust formed by the vertical joints developed by the continuous warm and humid climate is the material basis for the development of soil erosion, especially the ditches and collapsed ditches. The coarse grained granite has the highest content of grit in the surface soil and less clay, less erosion resistance, faster mineralization of the organic matter and fragile soil ecosystem. Combined with the very weak erosion resistant sand layer in weathering crust, Granite soil erosion is particularly serious internal causes. The anti-erosion ability of the plowed soil is only 1/10 of the undisturbed soil on the natural slope. It is suggested to strengthen the ground cover of the dryland on the sloping land. The authors point out that the ability of soil to resist erosion is a relative concept that shows different characteristics depending on the type and intensity of erosion dynamics. In the case of weak erosion power, the corrosion resistance is the main aspect that affects the soil erosion resistance. Under the strong erosion power, the soil impact resistance will rise to be the dominant aspect affecting the soil erosion resistance.