【摘要】 湖南花岗岩面积广,风化壳厚度大,土壤含砂多,侵蚀十分强烈,土壤年侵蚀量高达1.054亿吨。花岗岩区土壤的加速侵蚀,威胁着人民的生产和生活。为此,必须采取生物、工程和耕作措施,进行综合防治。更多还原

【Abstract】 The area of granite in Hunan is quite wide.The depth of weathered shell is great.The soil contains much sand and is eroded very much.The guantity of eroded soil reachesas high as 105.4 million tons a yea.The production and life of the people are threatenedby the accelerated erosion of soil in the granite areas.Therefore,the effective measures ofsocial economy,biology,engineering and cultivation must be taken as to prevent the soilerosion.更多还原