Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14511 |
Stand basal area and solar radiation amplify white spruce climate sensitivity in interior Alaska: Evidence from carbon isotopes and tree rings | |
Nicklen, Elizabeth Fleur1,2; Roland, Carl A.1,3; Csank, Adam Z.4; Wilmking, Martin5; Ruess, Roger W.2; Muldoon, Laurel Ann6 | |
2019-03-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2019 |
卷号 | 25期号:3页码:911-926 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Germany; Canada |
英文摘要 | The negative growth response of North American boreal forest trees to warm summers is well documented and the constraint of competition on tree growth widely reported, but the potential interaction between climate and competition in the boreal forest is not well studied. Because competition may amplify or mute tree climate-growth responses, understanding the role current forest structure plays in tree growth responses to climate is critical in assessing and managing future forest productivity in a warming climate. Using white spruce tree ring and carbon isotope data from a long-term vegetation monitoring program in Denali National Park and Preserve, we investigated the hypotheses that (a) competition and site moisture characteristics mediate white spruce radial growth response to climate and (b) moisture limitation is the mechanism for reduced growth. We further examined the impact of large reproductive events (mast years) on white spruce radial growth and stomatal regulation. We found that competition and site moisture characteristics mediated white spruce climate-growth response. The negative radial growth response to warm and dry early- to mid-summer and dry late summer conditions intensified in high competition stands and in areas receiving high potential solar radiation. Discrimination against C-13 was reduced in warm, dry summers and further diminished on south-facing hillslopes and in high competition stands, but was unaffected by climate in open floodplain stands, supporting the hypothesis that competition for moisture limits growth. Finally, during mast years, we found a shift in current year's carbon resources from radial growth to reproduction, reduced C-13 discrimination, and increased intrinsic water-use efficiency. Our findings highlight the importance of temporally variable and confounded factors, such as forest structure and climate, on the observed climate-growth response of white spruce. Thus, white spruce growth trends and productivity in a warming climate will likely depend on landscape position and current forest structure. |
英文关键词 | boreal forest carbon isotopes climate change climate-growth response competition dendroecology Picea glauca |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000459456700011 |
WOS关键词 | BOREAL FOREST ; GROWTH-RESPONSES ; PICEA-GLAUCA ; GAS-EXCHANGE ; HALF-CENTURY ; COMPETITION ; TEMPERATURE ; DYNAMICS ; DROUGHT ; AGE |
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/17505 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Natl Pk Serv, Cent Alaska Network, Fairbanks, AK 99709 USA; 2.Univ Alaska Fairbanks, Inst Arctic Biol, Dept Biol & Wildlife, Fairbanks, AK USA; 3.Denali Natl Pk & Preserve, Fairbanks, AK USA; 4.Univ Nevada, Dept Geog, Reno, NV 89557 USA; 5.Emst Moritz Arndt Univ Greifswald, Inst Bot & Landscape Ecol, Greifswald, Germany; 6.Nipissing Univ, Dept Environm Geog, North Bay, ON, Canada |
推荐引用方式 GB/T 7714 | Nicklen, Elizabeth Fleur,Roland, Carl A.,Csank, Adam Z.,et al. Stand basal area and solar radiation amplify white spruce climate sensitivity in interior Alaska: Evidence from carbon isotopes and tree rings[J]. GLOBAL CHANGE BIOLOGY,2019,25(3):911-926. |
APA | Nicklen, Elizabeth Fleur,Roland, Carl A.,Csank, Adam Z.,Wilmking, Martin,Ruess, Roger W.,&Muldoon, Laurel Ann.(2019).Stand basal area and solar radiation amplify white spruce climate sensitivity in interior Alaska: Evidence from carbon isotopes and tree rings.GLOBAL CHANGE BIOLOGY,25(3),911-926. |
MLA | Nicklen, Elizabeth Fleur,et al."Stand basal area and solar radiation amplify white spruce climate sensitivity in interior Alaska: Evidence from carbon isotopes and tree rings".GLOBAL CHANGE BIOLOGY 25.3(2019):911-926. |
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