Is grazing exclusion effective in restoring vegetation in degraded alpine grasslands in Tibet, China?
文献类型：期刊论文
| 作者 | Yan Yan ; Xuyang Lu
|
| 刊名 | PeerJ
 |
| 出版日期 | 2015 |
| 卷号 | 3页码:e1020 |
| 关键词 | Grazing exclusion Alpine grassland Grassland degradation Community characteristics Biomass Tibet |
| ISSN号 | 2167-8359 |
| 通讯作者 | Xuyang Lu |
| 英文摘要 | Overgrazing is considered one of the key disturbance factors that results in alpine grassland degradation in Tibet. Grazing exclusion by fencing has been widely used as an approach to restore degraded grasslands in Tibet since 2004. Is the grazing exclusion management strategy effective for the vegetation restoration of degraded alpine grasslands? Three alpine grassland types were selected in Tibet to investigate the effect of grazing exclusion on plant community structure and biomass. Our results showed that species biodiversity indicators, including the Pielou evenness index, the Shannon–Wiener diversity index, and the Simpson dominance index, did not significantly change under grazing exclusion conditions. In contrast, the total vegetation cover, the mean vegetation height of the community, and the aboveground biomass were significantly higher in the grazing exclusion grasslands than in the free grazed grasslands. These results indicated that grazing exclusion is an effective measure for maintaining community stability and improving aboveground vegetation growth in alpine grasslands. However, the statistical analysis showed that the growing season precipitation (GSP) plays a more important role than grazing exclusion in which influence on vegetation in alpine grasslands. In addition, because the results of the present study come fromshort term(6–8 years) grazing exclusion, it is still uncertain whether these improvements will be continuable if grazing exclusion is continuously implemented. Therefore, the assessments of the ecological effects of the grazing exclusion management strategy on degraded alpine grasslands in Tibet still need long termcontinued research. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000357131000004 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/13972]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 作者单位 | Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards & Environment, Chinese Academy of Sciences, Chengdu, China |
| 推荐引用方式 GB/T 7714 | Yan Yan,Xuyang Lu. Is grazing exclusion effective in restoring vegetation in degraded alpine grasslands in Tibet, China?[J]. PeerJ,2015,3:e1020. |
| APA | Yan Yan,&Xuyang Lu.(2015).Is grazing exclusion effective in restoring vegetation in degraded alpine grasslands in Tibet, China?.PeerJ,3,e1020. |
| MLA | Yan Yan,et al."Is grazing exclusion effective in restoring vegetation in degraded alpine grasslands in Tibet, China?".PeerJ 3(2015):e1020. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。