气候变化领域集成服务门户(CCPortal): The stability of spruce treelines on the eastern Tibetan Plateau over the last century is explained by pastoral disturbance

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DOI	10.1016/j.foreco.2019.03.058
	The stability of spruce treelines on the eastern Tibetan Plateau over the last century is explained by pastoral disturbance
	Wang Y.; Sylvester S.P.; Lu X.; Dawadi B.; Sigdel S.R.; Liang E.; Julio Camarero J.
发表日期	2019
ISSN	0378-1127
起始页码	34
结束页码	45
卷号	442
英文摘要	Most Tibetan people make their living through pastoralism, with livestock grazing being widespread throughout the Tibetan Plateau. The Tibetan Plateau is also home to the northern hemisphere's highest treelines but the effects of human activities, in particular pastoralism, on these treelines and their influence on the treeline responses to climate change remain unclear. To disentangle the effects of pastoral disturbances and climate on treeline dynamics, we surveyed three plots at grazing-disturbed Balfour spruce (Picea likiangensis var. balfouriana) treelines in the Yushu region (eastern Tibetan Plateau) and compared this data with published results of five undisturbed spruce treeline sites. Spatiotemporal changes in the position and structure of treelines during the past 400 years were reconstructed using dendrochronology. Tree recruitment was significantly linked to long-term summer and winter temperature. Under low local population densities and grazing pressure but consistent climate warming, disturbed treelines shifted upwards by 23.9–82.6 m during the 1611–1910 period. However, under higher local population densities, increased grazing pressure and climate warming over the last century, disturbed treelines showed no significant upward shift. In contrast, undisturbed treelines shifted upward by 25–68.5 m over the last century, thus implying that pastoralism was suppressing treeline expansion in disturbed sites. Together, these results underscore the importance of anthropogenic disturbances in influencing the structure and position of alpine treelines on the Tibetan Plateau. The role played by human disturbance should be carefully considered when evaluating the potential for treeline advance under future climate warming. © 2019 Elsevier B.V.
英文关键词	Anthropogenic disturbance; Climate change; Tibetan Plateau; Timberline; Tree ring; Treeline
语种	英语
scopus关键词	Climate change; Population dynamics; Population statistics; Anthropogenic disturbance; Tibetan Plateau; Timberline; Tree rings; Treeline; Forestry; anthropogenic effect; climate change; deciduous forest; dendrochronology; environmental disturbance; grazing pressure; human activity; Northern Hemisphere; pastoralism; population density; spatiotemporal analysis; summer; tree ring; treeline; winter; Forestry; Picea; Position; Pressure; Recruitment; Sites; Stability; Trees; China; Qinghai; Qinghai-Xizang Plateau; Yushu; Picea; Picea likiangensis var. balfouriana
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156028
作者单位	College of Biology and the Environment, Nanjing Forestry University, Nanjing, 210037, China; Key Laboratory of Alpine Ecology, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China; Central Department of Hydrology and Meteorology, Tribhuvan University, Kathmandu, Nepal; CAS Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing, 100101, China; Instituto Pirenaico de Ecología (IPE-CSIC), Avda. Montañana 1005, Zaragoza, 50080, Spain
推荐引用方式 GB/T 7714	Wang Y.,Sylvester S.P.,Lu X.,et al. The stability of spruce treelines on the eastern Tibetan Plateau over the last century is explained by pastoral disturbance[J],2019,442.
APA	Wang Y..,Sylvester S.P..,Lu X..,Dawadi B..,Sigdel S.R..,...&Julio Camarero J..(2019).The stability of spruce treelines on the eastern Tibetan Plateau over the last century is explained by pastoral disturbance.Forest Ecology and Management,442.
MLA	Wang Y.,et al."The stability of spruce treelines on the eastern Tibetan Plateau over the last century is explained by pastoral disturbance".Forest Ecology and Management 442(2019).