Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14710 |
Linking drought legacy effects across scales: From leaves to tree rings to ecosystems | |
Kannenberg, Steven A.1; Novick, Kimberly A.2; Alexander, M. Ross3; Maxwell, Justin T.4,5; Moore, David J. P.6; Phillips, Richard P.7; Anderegg, William R. L.1 | |
2019-06-30 | |
发表期刊 | GLOBAL CHANGE BIOLOGY
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ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2019 |
卷号 | 25期号:9页码:2978-2992 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Severe drought can cause lagged effects on tree physiology that negatively impact forest functioning for years. These "drought legacy effects" have been widely documented in tree-ring records and could have important implications for our understanding of broader scale forest carbon cycling. However, legacy effects in tree-ring increments may be decoupled from ecosystem fluxes due to (a) postdrought alterations in carbon allocation patterns; (b) temporal asynchrony between radial growth and carbon uptake; and (c) dendrochronological sampling biases. In order to link legacy effects from tree rings to whole forests, we leveraged a rich dataset from a Midwestern US forest that was severely impacted by a drought in 2012. At this site, we compiled tree-ring records, leaf-level gas exchange, eddy flux measurements, dendrometer band data, and satellite remote sensing estimates of greenness and leaf area before, during, and after the 2012 drought. After accounting for the relative abundance of tree species in the stand, we estimate that legacy effects led to similar to 10% reductions in tree-ring width increments in the year following the severe drought. Despite this stand-scale reduction in radial growth, we found that leaf-level photosynthesis, gross primary productivity (GPP), and vegetation greenness were not suppressed in the year following the 2012 drought. Neither temporal asynchrony between radial growth and carbon uptake nor sampling biases could explain our observations of legacy effects in tree rings but not in GPP. Instead, elevated leaf-level photosynthesis co-occurred with reduced leaf area in early 2013, indicating that resources may have been allocated away from radial growth in conjunction with postdrought upregulation of photosynthesis and repair of canopy damage. Collectively, our results indicate that tree-ring legacy effects were not observed in other canopy processes, and that postdrought canopy allocation could be an important mechanism that decouples tree-ring signals from GPP. |
英文关键词 | carbon allocation dendroecology drought recovery eddy covariance remote sensing |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000474049800001 |
WOS关键词 | NET PRIMARY PRODUCTIVITY ; BEECH FAGUS-SYLVATICA ; HYDRAULIC REDISTRIBUTION ; INTERANNUAL VARIABILITY ; CARBON DYNAMICS ; WATER RELATIONS ; UNITED-STATES ; FOREST ; GROWTH ; CLIMATE |
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/184300 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Univ Utah, Sch Biol Sci, Salt Lake City, UT 84112 USA; 2.Indiana Univ, Sch Publ & Environm Affairs, Bloomington, IN USA; 3.Midwest Dendro LLC, Naperville, IL USA; 4.Indiana Univ, Dept Geog, Bloomington, IN 47405 USA; 5.Harvard Univ, Harvard Forest, Petersham, MA USA; 6.Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ USA; 7.Indiana Univ, Dept Biol, Bloomington, IN USA |
推荐引用方式 GB/T 7714 | Kannenberg, Steven A.,Novick, Kimberly A.,Alexander, M. Ross,et al. Linking drought legacy effects across scales: From leaves to tree rings to ecosystems[J]. GLOBAL CHANGE BIOLOGY,2019,25(9):2978-2992. |
APA | Kannenberg, Steven A..,Novick, Kimberly A..,Alexander, M. Ross.,Maxwell, Justin T..,Moore, David J. P..,...&Anderegg, William R. L..(2019).Linking drought legacy effects across scales: From leaves to tree rings to ecosystems.GLOBAL CHANGE BIOLOGY,25(9),2978-2992. |
MLA | Kannenberg, Steven A.,et al."Linking drought legacy effects across scales: From leaves to tree rings to ecosystems".GLOBAL CHANGE BIOLOGY 25.9(2019):2978-2992. |
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