globalchange  > 气候变化与战略
DOI: 10.1111/gcb.14873
论文题名:
Accurate forest projections require long-term wood decay experiments because plant trait effects change through time
作者: Oberle B.; Lee M.R.; Myers J.A.; Osazuwa-Peters O.L.; Spasojevic M.J.; Walton M.L.; Young D.F.; Zanne A.E.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2020
卷: 26, 期:2
语种: 英语
英文关键词: carbon cycle ; plant traits ; temperate forest ; temporal scale ; wood decay ; woody debris
Scopus关键词: accuracy assessment ; biomineralization ; carbon cycle ; decomposition ; experiment ; temperate forest ; temporal analysis ; woody debris ; adult ; article ; blood vessel diameter ; body weight ; carbon cycle ; controlled study ; human ; mineralization ; prediction ; temperate deciduous forest
英文摘要: Whether global change will drive changing forests from net carbon (C) sinks to sources relates to how quickly deadwood decomposes. Because complete wood mineralization takes years, most experiments focus on how traits, environments and decomposer communities interact as wood decay begins. Few experiments last long enough to test whether drivers change with decay rates through time, with unknown consequences for scaling short-term results up to long-term forest ecosystem projections. Using a 7 year experiment that captured complete mineralization among 21 temperate tree species, we demonstrate that trait effects fade with advancing decay. However, wood density and vessel diameter, which may influence permeability, control how decay rates change through time. Denser wood loses mass more slowly at first but more quickly with advancing decay, which resolves ambiguity about the after-life consequences of this key plant functional trait by demonstrating that its effect on decay depends on experiment duration and sampling frequency. Only long-term data and a time-varying model yielded accurate predictions of both mass loss in a concurrent experiment and naturally recruited deadwood structure in a 32-year-old forest plot. Given the importance of forests in the carbon cycle, and the pivotal role for wood decay, accurate ecosystem projections are critical and they require experiments that go beyond enumerating potential mechanisms by identifying the temporal scale for their effects. © 2019 John Wiley & Sons Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159560
Appears in Collections:气候变化与战略

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作者单位: Division of Natural Sciences, New College of Florida, Sarasota, FL, United States; Center for Conservation and Sustainable Development, Missouri Botanical Garden, St. Louis, MO, United States; Department of Plant and Microbial Biology, North Carolina State University, Raleigh, NC, United States; Department of Biology, Washington University in St. Louis, St. Louis, MO, United States; Division of Biostatistics, Washington University School of Medicine, St. Louis, MO, United States; Department of Evolution, Ecology, and Organismal Biology, University of California Riverside, Riverside, CA, United States; Department of Biological Sciences, The George Washington University, Washington, DC, United States

Recommended Citation:
Oberle B.,Lee M.R.,Myers J.A.,et al. Accurate forest projections require long-term wood decay experiments because plant trait effects change through time[J]. Global Change Biology,2020-01-01,26(2)
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