Gradual expansion of moisture sensitive Abies spectabilis forest in the Trans-Himalayan zone of central Nepal associated with climate change
Tiwari, Achyut1,2,3; Fan, Ze-Xin1; Jump, Alistair S.5,6; Li, Shu-Feng1; Zhou, Zhe-Kun1,4
2017
发表期刊DENDROCHRONOLOGIA
ISSN1125-7865
卷号41页码:34-43
摘要Population structure and tree recruitment dynamics in the natural treeline ecotone of high mountains are strong indicators of vegetation responses to climate. Here, we examined recruitment dynamics of Abies spectabilis across the treeline ecotone (3439-3638 m asl) of Chimang Lekh of Annapurna Conservation Area in the Trans-Himalayan zone of central Nepal. Dendrochronological techniques were used to establish stand age structure by ring counts of adults, and by terminal bud scar count for seedlings and saplings. The results showed abundant seedling recruitment, higher regenerative inertia and colonization with a consistent range shift of the A. spectabilis treeline. The upward expansion of this sub-alpine treeline was found to be driven by a strong dependence of seedling recruitment and radial growth on snowmelt and precipitation as temperatures rise. The radial growth of A. spectabilis at the alpine timberline ecotone (ATE) and closed timberline forest (CTF) showed sensitivity to spring season (March-May) climate. Tree ring indices of CTF showed a strong positive correlation with spring and annual precipitation, and a significant negative correlation with spring and annual temperature, however, moisture sensitivity was less strong at ATE than CTF. (C) 2016 Elsevier GmbH. All rights reserved.
关键词Trans-himalaya Treeline Recruitment Ecotone
收录类别SCI
语种英语
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文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/54860
专题中国科学院东亚植物多样性与生物地理学重点实验室
作者单位1.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Beijing 666303, Yunnan, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Tribhuvan Univ, Tri Chandra Campus, Kathmandu, Nepal
4.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biogeog & Biodivers, Kunming 650204, Yunnan, Peoples R China
5.Univ Stirling, Sch Nat Sci, Biol & Environm Sci, Stirling FK9 4LA, Scotland
6.CREAF, Campus Bellaterra UAB,Edifici C, Cerdanyola Del Valles 08193, Spaina
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Tiwari, Achyut,Fan, Ze-Xin,Jump, Alistair S.,et al. Gradual expansion of moisture sensitive Abies spectabilis forest in the Trans-Himalayan zone of central Nepal associated with climate change[J]. DENDROCHRONOLOGIA,2017,41:34-43.
APA Tiwari, Achyut,Fan, Ze-Xin,Jump, Alistair S.,Li, Shu-Feng,&Zhou, Zhe-Kun.(2017).Gradual expansion of moisture sensitive Abies spectabilis forest in the Trans-Himalayan zone of central Nepal associated with climate change.DENDROCHRONOLOGIA,41,34-43.
MLA Tiwari, Achyut,et al."Gradual expansion of moisture sensitive Abies spectabilis forest in the Trans-Himalayan zone of central Nepal associated with climate change".DENDROCHRONOLOGIA 41(2017):34-43.
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