The results of the study on the plant communities among the stages of regressive succession indicated that the dominants and components of the communities changed with the aggravation of degradation, and the plant communities changed from the grass family-dominant community to the forbs-dominant one. The above-ground biomass of grasses, sedges and communities among primary plot, moderate-degraded plot and heavy-(degraded) plot showed significant difference. The proportion of the fine forages such as grasses and sedges decreased with increase in regressive succession, that of the forbs got higher instead, and in the communites the forbs were dominant.
Acta Prataculturae Sinica
alpine Kobresia humilis meadow