Grazing exclusion by fencing non-linearly restored the degraded alpine grasslands on the Tibetan Plateau
Wu, JS; Feng, YF; Zhang, XZ; Wurst, S; Tietjen, B; Tarolli, P; Song, CQ
2017
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume7Pages:-
AbstractResilience is an important aspect of the non-linear restoration of disturbed ecosystems. Fenced grassland patches on the northern Tibetan Plateau can be used to examine the resistance and resilience of degraded alpine grasslands to grazing and to a changing climate. To examine the non-linearity of restoration, we used moderate resolution imaging spectroradiometer (MODIS) normalized difference vegetation index (NDVI) as a proxy for productivity during a ten-year restoration by fencing. Degraded alpine grasslands exhibited three restoration trajectories: an equilibrium in meadows, a non-linear increase across steppes, and an abrupt impulse in desert-steppes following a slight increase in productivity. Combined with weather conditions, the ten-year grazing exclusion has successfully enhanced the NDVI on the most degraded steppes, but did not do so efficiently on either meadows or desert-steppes. Warming favors the NDVI enhancement of degraded meadows, but higher temperatures limited the restoration of degraded steppes and desert-steppes. Precipitation is necessary to restore degraded alpine grasslands, but more precipitation might be useless for meadows due to lower temperatures and for desert-steppes due to limitations caused by the small species pool. We suggest that detailed field observations of community compositional changes are necessary to better understand the mechanisms behind such non-linear ecological restorations.
SubtypeJournal
Subject AreaScience & Technology - Other Topics
WOS Subject ExtendedMultidisciplinary Sciences
WOS KeywordCLIMATE-CHANGE ; NORTHERN TIBET ; PRECIPITATION GRADIENT ; GROWING-SEASON ; 3RD POLE ; RESILIENCE ; PRODUCTIVITY ; VEGETATION ; DIVERSITY ; CHINA
Indexed BySCI
Language英语
WOS IDWOS:000414810800025
PublisherNATURE PUBLISHING GROUP
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/43977
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Wu, JS,Feng, YF,Zhang, XZ,et al. Grazing exclusion by fencing non-linearly restored the degraded alpine grasslands on the Tibetan Plateau[J]. SCIENTIFIC REPORTS,2017,7:-.
APA Wu, JS.,Feng, YF.,Zhang, XZ.,Wurst, S.,Tietjen, B.,...&Song, CQ.(2017).Grazing exclusion by fencing non-linearly restored the degraded alpine grasslands on the Tibetan Plateau.SCIENTIFIC REPORTS,7,-.
MLA Wu, JS,et al."Grazing exclusion by fencing non-linearly restored the degraded alpine grasslands on the Tibetan Plateau".SCIENTIFIC REPORTS 7(2017):-.
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