supported jointly by National Natural Science Foundation of China(Grant Nos.40161004 and 40361002);Guangxi Natural Science Foundation(Guikeji Grant No.0236046 and Guikezi Grant No.0342001-2);the Resource and Environmental Information System Laboratory project of Guangxi Teachers Education University-Guangxi Science and Technological Innovation Unit.
Du’an Yao Autonomous County is a typical area for the distribution of karst rocky desertification in Guangxi. The indices for the grades of rocky desertification are selected according to the scientific meaning of ka...