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DOI	10.1007/s00468-019-01924-4
	Negative growth responses to temperature of sympatric species converge under warming conditions on the southeastern Tibetan Plateau
	Du, Qiqi; Rossi, Sergio; Lu, Xiaoming; Wang, Yafeng; Zhu, Haifeng; Liang, Eryuan; Julio Camarero, J.
通讯作者	Liang, E (通讯作者)
发表日期	2020
ISSN	0931-1890
EISSN	1432-2285
起始页码	395
结束页码	404
卷号	34 期号:2
英文摘要	Key message Warming-induced drought stress leads to convergent and negative growth responses to temperature between sympatric tree species, implying an increasing interspecific competition for soil moisture. In mixed forests, sympatric tree species avoid competition by partitioning their niches according to available environment resources. We raise the hypothesis that climate warming leads to a convergence in growth responses to climate, thus increasing the competition among sympatric species in drought-prone forests. In this study, we selected a mixed forest located at ca. 3600 m a.s.l in the Baima Snow Mountains, an inner dry valley of the southeastern Tibetan Plateau. We measured width of the tree rings produced during 1910-2016 in 60 trees belonging to three sympatric species: Abies georgei, Picea likiangensis, and Betula delavayi. We analyzed the changes in radial growth and their responses to climate. We detected shifts in the responses to climate after the 1990s. The radial growth of all species was positively correlated with precipitation from 1964 to 1990, but negatively correlated with March-June temperature from 1991 to 2016. Compared to the period 1964-1990, convergent and negative growth responses to warmer temperatures in the period 1991-2016 probably reflect less available soil moisture for growing in this mixed forest. We conclude that climate warming will affect the niches of sympatric species in mixed forests subjected to seasonal drought, thus increasing competition and altering structure and composition of the stands in dry regions.
关键词	FAGUS-SYLVATICA L.CLIMATE-CHANGE NORWAY SPRUCE DROUGHT FORESTS MOUNTAINS SENSITIVITY MORTALITY PHENOLOGY CONIFERS
英文关键词	Tree rings; Mixed forests; Growth convergence; Climate warming; Inner dry valley; Tibetan Plateau
语种	英语
WOS研究方向	Forestry
WOS类目	Forestry
WOS记录号	WOS:000493328200002
来源期刊	TREES-STRUCTURE AND FUNCTION
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260050
推荐引用方式 GB/T 7714	Du, Qiqi,Rossi, Sergio,Lu, Xiaoming,et al. Negative growth responses to temperature of sympatric species converge under warming conditions on the southeastern Tibetan Plateau[J]. 中国科学院青藏高原研究所,2020,34(2).
APA	Du, Qiqi.,Rossi, Sergio.,Lu, Xiaoming.,Wang, Yafeng.,Zhu, Haifeng.,...&Julio Camarero, J..(2020).Negative growth responses to temperature of sympatric species converge under warming conditions on the southeastern Tibetan Plateau.TREES-STRUCTURE AND FUNCTION,34(2).
MLA	Du, Qiqi,et al."Negative growth responses to temperature of sympatric species converge under warming conditions on the southeastern Tibetan Plateau".TREES-STRUCTURE AND FUNCTION 34.2(2020).