DOI: 10.1111/gcb.13077
论文题名: Alteration of forest succession and carbon cycling under elevated CO2
作者: Miller A.D. ; Dietze M.C. ; Delucia E.H. ; Anderson-Teixeira K.J.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2016
卷: 22, 期: 1 起始页码: 351
结束页码: 363
语种: 英语
英文关键词: Climate change
; Duke FACE
; Ecosystem demography model
; Forest regeneration
; Simulation
; Succession
Scopus关键词: carbon cycle
; carbon dioxide enrichment
; climate change
; ecosystem response
; forest ecosystem
; regeneration
; succession
; Duke Forest
; North Carolina
; United States
; carbon dioxide
; nitrogen
; atmosphere
; biomass
; carbon cycle
; chemistry
; climate change
; forest
; growth, development and aging
; metabolism
; theoretical model
; tree
; Atmosphere
; Biomass
; Carbon Cycle
; Carbon Dioxide
; Climate Change
; Forests
; Models, Theoretical
; Nitrogen
; Trees
英文摘要: Regenerating forests influence the global carbon (C) cycle, and understanding how climate change will affect patterns of regeneration and C storage is necessary to predict the rate of atmospheric carbon dioxide (CO2) increase in future decades. While experimental elevation of CO2 has revealed that young forests respond with increased productivity, there remains considerable uncertainty as to how the long-term dynamics of forest regrowth are shaped by elevated CO2 (eCO2). Here, we use the mechanistic size- and age- structured Ecosystem Demography model to investigate the effects of CO2 enrichment on forest regeneration, using data from the Duke Forest Free-Air Carbon dioxide Enrichment (FACE) experiment, a forest chronosequence, and an eddy-covariance tower for model parameterization and evaluation. We find that the dynamics of forest regeneration are accelerated, and stands consistently hit a variety of developmental benchmarks earlier under eCO2. Because responses to eCO2 varied by plant functional type, successional pathways, and mature forest composition differed under eCO2, with mid- and late-successional hardwood functional types experiencing greater increases in biomass compared to early-successional functional types and the pine canopy. Over the simulation period, eCO2 led to an increase in total ecosystem C storage of 9.7 Mg C ha-1. Model predictions of mature forest biomass and ecosystem-atmosphere exchange of CO2 and H2O were sensitive to assumptions about nitrogen limitation; both the magnitude and persistence of the ecosystem response to eCO2 were reduced under N limitation. In summary, our simulations demonstrate that eCO2 can result in a general acceleration of forest regeneration while altering the course of successional change and having a lasting impact on forest ecosystems. © 2016 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61527
Appears in Collections: 影响、适应和脆弱性
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作者单位: Conservation Ecology Center, Smithsonian Conservation Biology Institute, National Zoological Park, 1500 Remount Rd., Front Royal, VA, United States; Institute for Sustainability, Energy, and Environment, University of Illinois at Urbana-Champaign, 1101 W. Peabody, Suite 350 (NSRC), Urbana, IL, United States; Department of Earth and Environment, Boston University, 685 Commonwealth Avenue, Boston, MA, United States; Department of Plant Biology, University of Illinois at Urbana-Champaign, 265 Morrill Hall, MC-116, 505 South Goodwin Avenue, Urbana, IL, United States; Center for Tropical Forest Science-Forest Global Earth Observatory, Smithsonian Tropical Research Institute, Panamá, Apartado Postal, Panama
Recommended Citation:
Miller A.D.,Dietze M.C.,Delucia E.H.,et al. Alteration of forest succession and carbon cycling under elevated CO2[J]. Global Change Biology,2016-01-01,22(1)