Divergent Growth Responses to Warming between Stand-Grown and Open-Grown Trees in a Dryland Montane Forest in Northwestern China
文献类型：期刊论文
| 作者 | Zhang, Lei1,2 ; Shi, Hao3; Yu, Pengtao; Wang, Yanhui; Pan, Shufen3; Wang, Bin; Tian, Hanqin3
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| 刊名 | FORESTS
 |
| 出版日期 | 2019-12-01 |
| 卷号 | 10期号:12页码:- |
| 关键词 | climate warming dryland forests tree growth competition water limitation elevation |
| 英文摘要 | Dryland montane forests conserve water for people living in the fluvial plains. The fate of these forests under climate warming is strongly affected by local environmental factors. The question remains of how internal factors contribute to climate change impacts on forest growth in these regions. Here, we investigated tree ring records for similar-aged stand-grown trees and their neighboring open-grown trees at elevation in a dryland montane forest (Picea crassifolia Kom.) in northwestern China. The growth rate of open-grown trees is much higher than their neighboring stand-grown trees across the entire elevation gradient, and the lower the altitude, the greater the difference. Open-grown trees at different elevations showed similar growth patterns, as tree growth at all sites was accelerated over time. In contrast, growth patterns of stand-grown trees were divergent at different altitudes, as growth at high elevations (3100-3300 m a.s.l.) was accelerated, whereas growth at low elevations (2700-2900 m a.s.l.) became stable after the year 1990. Analysis of growth-climate relationships indicated that warming promoted open-grown tree growth across the entire altitude gradient, and also stand-grown tree growth at high elevations, but negatively affected the growth of stand-grown trees at low elevations. Water scarcity can be exacerbated by competition within forests, inhibiting the warming-induced benefits on tree growth. Moving window correlation analysis suggested the negative effect of warming on tree growth at low elevations was diminished after the late 1990s, as the drought stress was alleviated. Our research shows the divergent growth responses to warming of stand-grown and open-grown trees along elevation. It reveals effects of internal factors in determining tree growth response to warming and holds the potential to aid forest management and ecosystem models in responding to climate change. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/42399]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 作者单位 | 1.Chinese Acad Forestry, Res Inst Forest Ecol Environm & Protect, Key Lab Forest Ecol & Environm, Natl Forestry & Grassland Adm, Beijing 100091, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Auburn Univ, Sch Forestry & Wildlife Sci, Int Ctr Climate & Global Change Res, Auburn, AL 36849 USA |
| 推荐引用方式 GB/T 7714 | Zhang, Lei,Shi, Hao,Yu, Pengtao,et al. Divergent Growth Responses to Warming between Stand-Grown and Open-Grown Trees in a Dryland Montane Forest in Northwestern China[J]. FORESTS,2019,10(12):-. |
| APA | Zhang, Lei.,Shi, Hao.,Yu, Pengtao.,Wang, Yanhui.,Pan, Shufen.,...&Tian, Hanqin.(2019).Divergent Growth Responses to Warming between Stand-Grown and Open-Grown Trees in a Dryland Montane Forest in Northwestern China.FORESTS,10(12),-. |
| MLA | Zhang, Lei,et al."Divergent Growth Responses to Warming between Stand-Grown and Open-Grown Trees in a Dryland Montane Forest in Northwestern China".FORESTS 10.12(2019):-. |
入库方式： OAI收割
来源：生态环境研究中心
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