Ring widths of Rhododendron shrubs reveal a persistent winter warming in the central Himalaya

doi:10.1016/j.dendro.2020.125799

CORC > 西双版纳热带植物园 > 中国科学院西双版纳热带植物园 > 2012年后新成立研究组

	Ring widths of Rhododendron shrubs reveal a persistent winter warming in the central Himalaya
	Panthi, Shankar ; Fan, Ze-Xin ; Brauning, Achim 1
刊名	DENDROCHRONOLOGIA
	2021
卷号	65 期号:-页码:-
关键词	Central Himalaya Climate change Dendroclimatology Rhododendron campanulatum Shrub rings Winter temperature
ISSN号	1125-7865
DOI	10.1016/j.dendro.2020.125799
英文摘要	Himalayan Mountains provide unique opportunities for the extension of shrub-ring based dendroclimatology beyond the upper tree limit. However, little is known about limiting climate factors of shrub growth under harsh environmental conditions. We established a new ring-width chronology of a Himalayan shrub rhododendron (Rhododendron campanulatum D. Don) at the upper Krummholz treeline in the Mt. Gaurishankar massif, central Himalaya, Nepal. Bootstrapped correlation analysis showed positive relationships between radial growth and temperatures of all months from previous November to current October. Correlations were the highest with winter (December-February) minimum temperature (r = 0.781, p < 0.001), indicating that radial growth of R. campanulatum is strongly sensitive to winter minimum temperature. The linear regression model explained 61 % of the actual winter minimum temperature variance during the calibration period 1960-2013. Periods of low and high minimum winter temperatures in the central Himalaya were consistent with cool and warm episodes found by other regional winter temperature reconstructions from the Himalayas and the Tibetan Plateau. Spatial correlation analysis with land surface temperatures revealed the spatial representativeness of our reconstruction for a larger geographical territory over the Himalayas and the Tibetan Plateau. Furthermore, winter temperature in the central Himalaya is teleconnected with the December-February India-Burma trough. The persistent increasing winter temperature in recent decades in the central Himalaya coincides with continental-scale warming. Alpine vegetation in humid regions of the Himalayas may benefit from winter warming via an earlier start and extension of the growing season, as long as moisture availability is sufficient.
学科主题	Forestry ; Physical Geography
语种	英语
WOS记录号	WOS:000612307400002
内容类型	期刊论文
源URL	[http://ir.xtbg.org.cn/handle/353005/12150]
专题	西双版纳热带植物园_2012年后新成立研究组
作者单位	1.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Ailaoshan Stn Subtrop Forest Ecosyst Studies, Jingdong 676209, Yunnan, Peoples R China 2.Chinese Acad Sci, Ctr Plant Ecol, Core Bot Gardens, Xishuangbanna 666303, Peoples R China 3.Univ Erlangen Nurnberg, Inst Geog, D-91058 Erlangen, Germany 4.Chinese Acad Sci, CAS Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Panthi, Shankar,Fan, Ze-Xin,Brauning, Achim. Ring widths of Rhododendron shrubs reveal a persistent winter warming in the central Himalaya[J]. DENDROCHRONOLOGIA,2021,65(-):-.
APA	Panthi, Shankar,Fan, Ze-Xin,&Brauning, Achim.(2021).Ring widths of Rhododendron shrubs reveal a persistent winter warming in the central Himalaya.DENDROCHRONOLOGIA,65(-),-.
MLA	Panthi, Shankar,et al."Ring widths of Rhododendron shrubs reveal a persistent winter warming in the central Himalaya".DENDROCHRONOLOGIA 65.-(2021):-.