中国科学院青藏高原研究所机构知识库
Advanced  
ITPCAS OpenIR  > 图书馆  > 期刊论文
Subject: 地理学::自然地理学
Title: Increased stem density and competition may diminish the positive effects of warming at alpine treeline
Author: Wang, YF (Wang, Yafeng)1; Pederson, N (Pederson, Neil)2; Ellison, AM (Ellison, Aaron M.)2; Buckley, HL (Buckley, Hannah L.)2, 3; Case, BS (Case, Bradley S.)2, 4; Iang, EL (Iang, Eryuan L.)1, 5; Camarero, JJ (Camarero, J. Julio)6
Corresponding Author: Ellison, AM
Source: ECOLOGY
Issued Date: 2016
DOI: 10.1890/15-1264.1
Volume: 97, Issue:7, Pages:1668-1679
Indexed Type: SCI
Cooperation Status: 国际
DOC Type: Article
English Abstract: The most widespread response to global warming among alpine treeline ecotones is not an upward shift, but an increase in tree density. However, the impact of increasing density on interactions among trees at treeline is not well understood. Here, we test if treeline densification induced by climatic warming leads to increasing intraspecific competition. We mapped and measured the size and age of Smith fir trees growing in two treelines located in the southeastern Tibetan Plateau. We used spatial point-pattern and codispersion analyses to describe the spatial association and covariation among seedlings, juveniles, and adults grouped in 30-yr age classes from the 1860s to the present. Effects of competition on tree height and regeneration were inferred from bivariate mark-correlations. Since the 1950s, a rapid densification occurred at both sites in response to climatic warming. Competition between adults and juveniles or seedlings at small scales intensified as density increased. Encroachment negatively affected height growth and further reduced recruitment around mature trees. We infer that tree recruitment at the studied treelines was more cold-limited prior to 1950 and shifted to a less temperature-constrained regime in response to climatic warming. Therefore, the ongoing densification and encroachment of alpine treelines could alter the way climate drives their transitions toward subalpine forests.
WOS ID: WOS:000379323800005
Citation statistics:
Content Type: 期刊论文
URI: http://ir.itpcas.ac.cn/handle/131C11/7665
Appears in Collections:图书馆_期刊论文

Files in This Item:
File Name/ File Size Content Type Version Access License
V.97(7) 1668-1679 2016.pdf(1571KB)期刊论文作者接受稿开放获取View 联系获取全文

description.institution: 1.Chinese Acad Sci, Key Lab Alpine Ecol & Biodivers, Key Lab Tibetan Environm Changes & Land Surface P, Inst Tibetan Plateau Res, Beijing 100085, Peoples R China
2.Harvard Univ, Harvard Forest, 324 North Main St, Petersham, MA 01366 USA
3.Lincoln Univ, Dept Ecol, Lincoln 7647, New Zealand
4.Lincoln Univ, Dept Informat & Enabling Technol, Lincoln 7647, New Zealand
5.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
6.IPE CSIC, Ave Montanana 1005, Zaragoza 50059, Spain

Recommended Citation:
Wang, YF ,Pederson, N ,Ellison, AM ,et al. Increased stem density and competition may diminish the positive effects of warming at alpine treeline[J]. ECOLOGY,2016,97(7):1668-1679.
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Wang, YF (Wang, Yafeng)]'s Articles
[Pederson, N (Pederson, Neil)]'s Articles
[Ellison, AM (Ellison, Aaron M.)]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Wang, YF (Wang, Yafeng)]‘s Articles
[Pederson, N (Pederson, Neil)]‘s Articles
[Ellison, AM (Ellison, Aaron M.)]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: V.97(7) 1668-1679 2016.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院青藏高原研究所 - Feedback
Powered by CSpace