Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13540 |
The competitive status of trees determines their responsiveness to increasing atmospheric humidity - a climate trend predicted for northern latitudes | |
Tullus, Arvo1; Kupper, Priit1; Kaasik, Ants1; Tullus, Hardi2; Lohmus, Krista1; Sober, Anu1; Sellin, Arne1 | |
2017-05-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2017 |
卷号 | 23期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | Estonia |
英文摘要 | The interactive effects of climate variables and tree-tree competition are still insufficiently understood drivers of forest response to global climate change. Precipitation and air humidity are predicted to rise concurrently at high latitudes of the Northern Hemisphere. We investigated whether the growth response of deciduous trees to elevated air humidity varies with their competitive status. The study was conducted in seed-originated silver birch and monoclonal hybrid aspen stands grown at the free air humidity manipulation (FAHM) experimental site in Estonia, in which manipulated stands (n = 3 for both species) are exposed to artificially elevated relative air humidity (6-7% over the ambient level). The study period included three growing seasons during which the stands had reached the competitive stage (trees were 7 years old in the final year). A significant 'treatmentxcompetitive status' interactive effect on growth was detected in all years in birch (P < 0.01) and in one year in aspen stands (P = 0.015). Competitively advantaged trees were always more strongly affected by elevated humidity. Initially the growth of advantaged and neutral trees of both species remained significantly suppressed in humidified stands. In the following years, dominance and elevated humidity had a synergistic positive effect on the growth of birches. Aspens with different competitive status recovered more uniformly, attaining similar relative growth rates in manipulated and control stands, but preserved a significantly lower total growth yield due to severe initial growth stress. Disadvantaged trees of both species were never significantly affected by elevated humidity. Our results suggest that air humidity affects trees indirectly depending on their social status. Therefore, the response of northern temperate and boreal forests to a more humid climate in future will likely be modified by competitive relationships among trees, which may potentially affect species composition and cause a need to change forestry practices. |
英文关键词 | Betula pendula climate change climate manipulation elevated air humidity interactive effects intraspecific competition Populus tremula x P. tremuloides tree-tree competition |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000397800600017 |
WOS关键词 | BETULA-PENDULA ROTH ; ELEVATED AIR HUMIDITY ; YOUNG SILVER BIRCH ; CO2 AND/OR O-3 ; POPULUS-TREMULA ; BIOMASS ALLOCATION ; ENRICHMENT FACE ; PLANT COMMUNITY ; EUROPEAN BEECH ; FOREST STANDS |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/16698 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Univ Tartu, Inst Ecol & Earth Sci, Lai 40, EE-51005 Tartu, Estonia; 2.Estonian Univ Life Sci, Inst Forestry & Rural Engn, Kreutzwaldi 5, EE-51014 Tartu, Estonia |
推荐引用方式 GB/T 7714 | Tullus, Arvo,Kupper, Priit,Kaasik, Ants,et al. The competitive status of trees determines their responsiveness to increasing atmospheric humidity - a climate trend predicted for northern latitudes[J]. GLOBAL CHANGE BIOLOGY,2017,23(5). |
APA | Tullus, Arvo.,Kupper, Priit.,Kaasik, Ants.,Tullus, Hardi.,Lohmus, Krista.,...&Sellin, Arne.(2017).The competitive status of trees determines their responsiveness to increasing atmospheric humidity - a climate trend predicted for northern latitudes.GLOBAL CHANGE BIOLOGY,23(5). |
MLA | Tullus, Arvo,et al."The competitive status of trees determines their responsiveness to increasing atmospheric humidity - a climate trend predicted for northern latitudes".GLOBAL CHANGE BIOLOGY 23.5(2017). |
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