概说 花岗岩地区在我国南方分布极广,流失程度最烈,为害也最大,主要分布在江西、福建、广东、湖南、湖北、安徽、浙江及云南、广西、四川等省(区),总面积23.9万平方公里,水土流失面积达19.7万平方公里,占总面积的82.4％,其中强度和剧烈侵蚀共占21.9％,多见于江西 Overview Granite area in our country is very wide distribution, the highest degree of loss, damage is also the largest, mainly in Jiangxi, Fujian, Guangdong, Hunan, Hubei, Anhui, Zhejiang and Yunnan, Guangxi, Sichuan and other provinces (regions), the total area 239,000 square kilometers, soil erosion area of ​​197,000 square kilometers, accounting for 82.4% of the total area, of which intensity and severe erosion together accounted for 21.9%, more common in Jiangxi