Grazing Exclusion, a Choice between Biomass Growth and Species Diversity Maintenance in BeijingTianjin Sand Source Control Project
Grazing Exclusion, a Choice between Biomass Growth and Species Diversity Maintenance in BeijingTianjin Sand Source Control Project
复制标题
禁牧——京津沙源治理工程生物量增长与物种多样性维持的选择
DOI：
10.3390/su11071941
复制
发表时间：
2019-04-01
期刊：
影响因子：
3.9
通讯作者：
Yu, Hailing
中科院分区：
文献类型：
--
作者：
Li, Yuzhe;Fan, Jiangwen;Yu, Hailing
Grasslands in northern China form an important ecological barrier that prevents and controls desertification. The Beijing-Tianjin Sand Source Control (BTSSC) Project has been implemented to restore grassland in order to control sand sourced pollution. This study aimed to understand the impacts of four applied restoration practices on the productivity, composition, and species diversity of vegetation communities in the BTSSC Project. The results indicated the following: (1) All the restoration practices tended to increase the height and cover of communities, and the effect was most obvious where grazing was excluded; (2) total biomass (87%), above-ground biomass (164%) and below-ground biomass (58%) only increased consistently when grazing was excluded from the steppe; (3) fenced and grazing exclusion practice significantly increased the abundance of species in communities, but all the practices tended to decrease the evenness of species; and, (4) the correlation analysis revealed that the Shannon-Wiener diversity index, and Pielou evenness index, showed significant negative correlations with the above-ground biomass of grassland communities after restoration, while no significant relationships were shown in reference plots. Our comparison of applied practices in the BTSSC project revealed that grazing exclusion might be a high priority for more successful restoration in this region.
