Drought limitation on tree growth at the Northern Hemisphere's highest tree line

doi:10.1016/j.dendro.2018.11.006

	Drought limitation on tree growth at the Northern Hemisphere's highest tree line
	Lyu, Lixin ; Zhang, Qi-Bin ; Pellatt, Marlow G.; Buntgen, Ulf 4,5,6; Li, Mai-He ; Cherubini, Paolo 1
	2019
发表期刊	DENDROCHRONOLOGIA
ISSN	1125-7865
卷号	53 页码:40-47
摘要	The alpine tree line is generally assumed to be controlled by low temperatures, and thus to be experiencing an upward shift under global warming. As global temperatures rise, tree growth at the tree line could either increase if temperature is the limiting factor or decrease if a warming-induced loss of moisture limits growth. Here, we use dendrochronological techniques to understand the abiotic drivers of the Northern Hemisphere's highest tree line ecotones on the southern Tibetan Plateau (TP). Ring-width measurements from three juniper sites between 4680 and 4900 m asl were significantly and negatively correlated with May-June-July evapotranspiration (ET0), and positively correlated with relative humidity and other moisture-related meteorological variables. At the same time, ring widths were negatively correlated with temperature means and sunshine rates. Our results highlight the common sensitivity of tree growth to moisture variations despite the differential growth trends occurring since 1850 (end of the Industrial Revolution) at the three tree line ecotones. These findings indicate that low temperatures may not be the sole driving force behind tree growth and the range dynamics of alpine tree lines. Tree lines in the dry parts of the TP and possibly also beyond are likely to retreat rather than to advance in a warmer world due to water limitations.
关键词	Alpine tree line Climate reconstructions Drought stress Growth-climate sensitivity Tibetan plateau Tree-Ring width Vegetation dynamics
学科领域	Forestry ; Geography, Physical
DOI	10.1016/j.dendro.2018.11.006
收录类别	SCI
语种	英语
WOS关键词	TIBETAN PLATEAU ; TEMPERATURE RECONSTRUCTION ; UPPER TIMBERLINE ; CLIMATIC FACTORS ; MOUNTAINS ; FOREST ; PRECIPITATION ; ESTABLISHMENT ; CHRONOLOGY ; SEEDLINGS
WOS研究方向	Forestry ; Physical Geography
WOS记录号	WOS:000456177200007
出版者	ELSEVIER GMBH
文献子类	Article
出版地	MUNICH
EISSN	1612-0051
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31330015, 41771060] ; Key Laboratory of Tibetan Environmental Changes and Land Surface Processes, Chinese Academy of SciencesChinese Academy of Sciences ; China Scholarship CouncilChina Scholarship Council [201770490418]
作者邮箱	qbzhang@ibcas.ac.cn
引用统计	被引频次：24[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/19451
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 2.Swiss Fed Res Inst WSL, Zurcherstr 111, CH-8903 Birmensdorf, Switzerland 3.Pellatt, Marlow G.] Pk Canada, Protected Areas Estab, Vancouver, BC V6B 6B4, Canada 4.Pellatt, Marlow G.] Pk Canada, Conservat Directorate, Vancouver, BC V6B 6B4, Canada 5.Univ Cambridge, Dept Geog, Cambridge CB2 3EN, England 6.CzechGlobe, Kotlarska 2, Brno 61137, Czech Republic 7.Masaryk Univ, Kotlarska 2, CS-61137 Brno, Czech Republic
推荐引用方式 GB/T 7714	Lyu, Lixin,Zhang, Qi-Bin,Pellatt, Marlow G.,et al. Drought limitation on tree growth at the Northern Hemisphere's highest tree line[J]. DENDROCHRONOLOGIA,2019,53:40-47.
APA	Lyu, Lixin,Zhang, Qi-Bin,Pellatt, Marlow G.,Buntgen, Ulf,Li, Mai-He,&Cherubini, Paolo.(2019).Drought limitation on tree growth at the Northern Hemisphere's highest tree line.DENDROCHRONOLOGIA,53,40-47.
MLA	Lyu, Lixin,et al."Drought limitation on tree growth at the Northern Hemisphere's highest tree line".DENDROCHRONOLOGIA 53(2019):40-47.

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