5 CONCLUSION
The present findings showed that the presence of shrubs inhibited the restoration rate and suggested that shrub-encroached grasslands is another stable state in this region. If we want to restore the diversity and composition of grassland community and maintain its function, it can not be achieved only fencing, especially in the high shrub cover area ofC. microphylla . It may require some human interference practices that inhibit C mircophylla growth (Xiong et al., 2004; Alados et al., 2019) and incorporates biotic perspectives into the framework of restoration (Koyama et al., 2015; Pierce et al., 2019).