ABSTRACT
After the disaster, many research institutions such as Institute of Mountain Hazards and Environment (IMHE), Sichuan University and China West Normal University launched field surveys lasted from 2008 to 2013 on the non-specification landslide. In order to investigate the succession of plant community, permanent plots and sampling methods were resorted to by the researchers. Due to the fact that Herbaceous plants were the dominant community of the study area, we set up 9 plots of 5 m × 5 m with altitude interval of 25 m, and inside each plot there were 3 quadrats of 1 m × 1 m, investigation was carried out in the quadrats. Firstly, we investigated community characteristics involving composition and species diversity, and measured plants’ fresh weight per unit area. In order to reduce the disturbance to plants, we chose only one quadrat in every plot and got in all the herbs in every quadrat when determined the fresh weight. And then, the herbs were dried at the temperature of 80°C until the weight kept unchanged so as to obtain the dry weight of biomass. At last, the three-dimensional coordinates of every plot were recorded by portable GPS and slope features were measured by geological compass.
