The successional rule of vegetation and dynamics of soil nutrient elements after 22-years' natural restoration were studied in karst disturbed area in northwest Guangxi

which would promote the degraded ecosystem restoration and reconstruction in northwest Guangxi.The study was employed overall and sample quadrate investigation method and taken the climax community in Mulun Natural Reserve in Huanjiang County as control.The results showed that the diversity lost severely in the disturbed area with only 26.6% species of that in Mulun Natural Reserve.With the succession and development from grass

grass and bushes

bushes

liana and bushes

trees and bushes to the climax community

the community heighty

biomass

plant diversity

soil organic carbon

soil nutrient

cation exchange capacity(CEC)

and the content of Si

Fe

Al

and Ti increased gradually.However

the content of Ca and Mg reduced remarkably

the value of pH decreased.All this indicated that the soil quality improved with the vegetation recovery basically but with slight drop in the stage of liana and bushes.