气候变化领域集成服务门户(CCPortal): Global fading of the temperature-growth coupling at alpine and polar treelines

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DOI	10.1111/gcb.15530
	Global fading of the temperature-growth coupling at alpine and polar treelines
	Camarero, Jesus Julio; Gazol, Antonio; Sanchez-Salguero, Raul; Fajardo, Alex; McIntire, Eliot J. B.; Gutierrez, Emilia; Batllori, Enric; Boudreau, Stephane; Carrer, Marco; Diez, Jeff; Dufour-Tremblay, Genevieve; Gaire, Narayan P.; Hofgaard, Annika; Jomelli, Vincent; Kirdyanov, Alexander, V; Levesque, Esther; Liang, Eryuan; Carlos Linares, Juan; Mathisen, Ingrid E.; Moiseev, Pavel A.; Sanguesa-Barreda, Gabriel; Shrestha, Krishna B.; Toivonen, Johanna M.; Tutubalina, Olga, V; Wilmking, Martin
通讯作者	Camarero, JJ (通讯作者)
发表日期	2021
ISSN	1354-1013
EISSN	1365-2486
起始页码	1879
结束页码	1889
卷号	27 期号:9
英文摘要	Climate warming is expected to positively alter upward and poleward treelines which are controlled by low temperature and a short growing season. Despite the importance of treelines as a bioassay of climate change, a global field assessment and posterior forecasting of tree growth at annual scales is lacking. Using annually resolved tree-ring data located across Eurasia and the Americas, we quantified and modeled the relationship between temperature and radial growth at treeline during the 20th century. We then tested whether this temperature-growth association will remain stable during the 21st century using a forward model under two climate scenarios (RCP 4.5 and 8.5). During the 20th century, growth enhancements were common in most sites, and temperature and growth showed positive trends. Interestingly, the relationship between temperature and growth trends was contingent on tree age suggesting biogeographic patterns in treeline growth are contingent on local factors besides climate warming. Simulations forecast temperature-growth decoupling during the 21st century. The growing season at treeline is projected to lengthen and growth rates would increase and become less dependent on temperature rise. These forecasts illustrate how growth may decouple from climate warming in cold regions and near the margins of tree existence. Such projected temperature-growth decoupling could impact ecosystem processes in mountain and polar biomes, with feedbacks on climate warming.
关键词	TREE-GROWTH CLIMATE SENSITIVITY RESPONSES FORESTS DYNAMICS ALTITUDE ECOTONES ABRUPT TRENDS
英文关键词	climate warming; forest limit; growth model; mountain ecosystems; tree rings
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS记录号	WOS:000617648400001
来源期刊	GLOBAL CHANGE BIOLOGY
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/260551
推荐引用方式 GB/T 7714	Camarero, Jesus Julio,Gazol, Antonio,Sanchez-Salguero, Raul,et al. Global fading of the temperature-growth coupling at alpine and polar treelines[J]. 中国科学院青藏高原研究所,2021,27(9).
APA	Camarero, Jesus Julio.,Gazol, Antonio.,Sanchez-Salguero, Raul.,Fajardo, Alex.,McIntire, Eliot J. B..,...&Wilmking, Martin.(2021).Global fading of the temperature-growth coupling at alpine and polar treelines.GLOBAL CHANGE BIOLOGY,27(9).
MLA	Camarero, Jesus Julio,et al."Global fading of the temperature-growth coupling at alpine and polar treelines".GLOBAL CHANGE BIOLOGY 27.9(2021).