IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Is grazing exclusion effective in restoring vegetation in degraded alpine grasslands in Tibet, China?
Yan Yan; Xuyang Lu
Corresponding AuthorXuyang Lu
2015
Source PublicationPEERJ
ISSN2167-8359
Volume3Pages:e1020
SubtypeArticle
AbstractOvergrazing 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.
KeywordGrazing Exclusion Alpine Grassland Grassland Degradation Community Characteristics Biomass Tibet
DOIDOI 10.7717/peerj.1020
Indexed BySCI
Language英语
Quartile4区
TOP
WOS IDWOS:000357131000004
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Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/13972
Collection山地表生过程与生态调控重点实验室
AffiliationKey Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards & Environment, Chinese Academy of Sciences, Chengdu, China
Recommended Citation
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.
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