Characteristics of herbaceous plant communities under different plantations on reclaimed coal gob piles in the Lu''an mining area, Shanxi

作者 Liu Yangbo; Li Suqing

期刊 Chinese Journal of Applied and Environmental Biology , 2020,6:26

摘要 The characteristics of herbaceous plant communities (associations)in different plantations on reclaimed coal gob piles over two different revegetated periods (3 a = shorter period and 8 a = longer period)in the Lu''an mining area, Shanxi, were studied using two-way indicator species analysis (TWINSPAN), detrended correspondence analysis (DCA), species diversity, and community stability determination.The results showed that (1)the TWINSPAN classification divided the 60 quadrats of herbaceous plant communities in the different plantations into 2 groups and 11 association types, among which associations I-VI were located in the reclaimed coal gob pile with a shorter revegetated period (3 a), and associations VII-XI were located in the reclaimed coal gob pile with a longer revegetated period (8 a).(2)The first DCA axis (x-axis)of 60 quadrats represented the changes in different herbaceous plant associations, and the y-axis represented the gradient change of the revegetated period.(3)An increase in the revegetated period caused an increase in the species diversity of herbaceous communities in the different plantations;however, the species diversity in each association varied with the plantation type.The restoration effects of herbaceous plants in the plantations dominated by Platycladus orientalis, Robinia pseudoacacia, and Rhus typhina were better than those of the other species.Lastly, (4)the stability of the herbaceous plant communities under different plantations was related to the plantation type, and the 11 herbaceous plant communities were unstable.Therefore, the herbaceous plant communities in the different plantations on reclaimed coal gob piles in the Lu''an mining area were still in the early stage of succession, and the revegetated year and plantation type were the major factors affecting the composition of the herbaceous plant communities.Further studies should be undertaken in the future regarding the succession dynamics of herbaceous plant communities in different plantations on reclaimed coal gob piles.

涉及物种 刺槐 Robinia pseudoacacia 侧柏 Platycladus orientalis