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Assessment of the vulnerability of alpine grasslands on the Qinghai-Tibetan Plateau

文献类型：期刊论文

作者Li, Meng1,2; Zhang, Xianzhou1,3; He, Yongtao1,3; Niu, Ben1; Wu, Jianshuang4
刊名PEERJ
出版日期2020-02-06
卷号8页码:20
关键词Alpine grasslands Exposure Sensitivity Resilience Vulnerability
ISSN号2167-8359
DOI10.7717/peerj.8513
通讯作者Zhang, Xianzhou(zhangxz@igsnrr.ac.cn)
英文摘要Assessing ecosystem vulnerability to climate change is critical for sustainable and adaptive ecosystem management. Alpine grasslands on the Qinghai-Tibetan Plateau are considered to be vulnerable to climate change, yet the ecosystem tends to maintain stability by increasing resilience and decreasing sensitivity. To date, the spatial pattern of grassland vulnerability to climate change and the mechanisms that vegetation applies to mitigate the impacts of climate change on grasslands by altering relevant ecosystem characteristics, especially sensitivity and resilience, remain unknown. In this study, we first assessed the spatial pattern of grassland vulnerability to climate change by integrating exposure, sensitivity, and resilience simultaneously, and then identified its driving forces. The results show that grasslands with high vulnerability were mainly located on the edges of the plateau, whereas alpine grasslands in the hinterlands of the plateau showed a low vulnerability. This spatial pattern of alpine grassland vulnerability was controlled by climatic exposure, and grassland sensitivity and resilience to climate change might also exacerbate or alleviate the degree of vulnerability. Climate change had variable impacts on different grassland types. Desert steppes were more vulnerable to climate change than alpine meadows and alpine steppes because of the high variability in environmental factors and their low ability to recover from perturbations. Our findings also confirm that grazing intensity, a quantitative index of the most important human disturbance on alpine grasslands in this plateau, was significantly correlated with ecosystem vulnerability. Moderate grazing intensity was of benefit for increasing grassland resilience and then subsequently reducing grassland vulnerability. Thus, this study suggests that future assessments of ecosystem vulnerability should not ignore anthropogenic disturbances, which might benefit environmental protection and sustainable management of grasslands on the Qinghai-Tibetan Plateau.
WOS关键词CLIMATE-CHANGE ; SPECIES COMPOSITION ; PLANT DIVERSITY ; IMPACTS ; PRECIPITATION ; PRODUCTIVITY ; VARIABILITY ; SENSITIVITY ; TEMPERATURE ; VEGETATION
资助项目Ministry of Science and Technology of China[2016YFC0502001] ; Chinese Academy of Sciences[XDB03030401] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19050502]
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000511439900010
出版者PEERJ INC
资助机构Ministry of Science and Technology of China ; Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/132211]  
专题中国科学院地理科学与资源研究所
通讯作者Zhang, Xianzhou
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modelling, Lhasa Natl Ecol Res Stn, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
4.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Li, Meng,Zhang, Xianzhou,He, Yongtao,et al. Assessment of the vulnerability of alpine grasslands on the Qinghai-Tibetan Plateau[J]. PEERJ,2020,8:20.
APA Li, Meng,Zhang, Xianzhou,He, Yongtao,Niu, Ben,&Wu, Jianshuang.(2020).Assessment of the vulnerability of alpine grasslands on the Qinghai-Tibetan Plateau.PEERJ,8,20.
MLA Li, Meng,et al."Assessment of the vulnerability of alpine grasslands on the Qinghai-Tibetan Plateau".PEERJ 8(2020):20.

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来源：地理科学与资源研究所

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