Research on Rocky Desertification in Southwest Karst Region of China

The karst rocky desertification is one of the most important ecologic environment problems in southwest China. Karst rocky desertification could result in the deterioration of soil physical and chemical properties,the descent of the production capacities,the biodiversity reducing,which seriously threatened to river basin ecologic environment security. In this review,research status was summarized,the research on rocky desertification mainly focused on causes,hazards,driving factors,spatial- temporal evolutions,the relevant researches on the concrete measures and control effect of rocky desertification were less.Common ecological management measures of rocky desertification have been listed such as soil eroded by moss,soil conservation by forage,soil hold by vegetation roots,plant community inhibition. The management guarantee of rocky desertification for improving policy system,root and symptom controlling,have been carried out,and suggestions for future controlling and key controlling also been put forwards.