DOI: 10.1016/j.foreco.2015.08.026
Scopus记录号: 2-s2.0-84940101326
论文题名: Ecosystem carbon (CO2 and CH4) fluxes of a Populus dettoides plantation in subtropical China during and post clear-cutting
作者: Gao S. ; Chen J. ; Tang Y. ; Xie J. ; Zhang R. ; Tang J. ; Zhang X.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 357 起始页码: 206
结束页码: 219
语种: 英语
英文关键词: Carbon balance
; Eddy covariance
; Forest regeneration
; GHG flux
; Harvest effect
; Poplar plantation
Scopus关键词: Budget control
; Carbon dioxide
; Ecology
; Floods
; Forestry
; Greenhouse gases
; Groundwater
; Harvesting
; Productivity
; Reforestation
; Rivers
; Soil moisture
; Carbon balance
; Eddy covariance
; Forest regeneration
; GHG flux
; Poplar plantation
; Ecosystems
; carbon balance
; carbon dioxide
; carbon sequestration
; carbon sink
; clearcutting
; deciduous tree
; eddy covariance
; greenhouse gas
; harvesting
; net ecosystem exchange
; plantation forestry
; regeneration
; understory
; China
; Populus
英文摘要: Poplar plantations have widely spread around the world due to its high productivity and adaptability. Clear-cutting is the primary harvesting method for poplar plantation management in southern China. However, the effect of harvesting on ecosystem carbon fluxes limits our ability to estimate its carbon sequestration. A consecutive, three-year observation on ecosystem CO2 and CH4 flux (FCO2 and FCH4) of a Populus dettoides plantation on the floodplain of Yangtze River was made prior and post to the clear-cutting using an eddy-covariance system. We found that clear-cutting turned the ecosystem from a strong carbon sink to a mediate carbon source only in several months, July to next January, after the harvest. The ecosystem turned to a net carbon sink at the beginning of the first growing season following clear-cutting due to the large productivity of understory vegetation in this region. The annual carbon budget was -424.3±52.5g-Cm-2 (95% confidence interval) in the harvesting year, with -53.6±22.8g-Cm-2 the first year and -290.7±34.2g-Cm-2 the second year after clear-cutting. Clear-cutting turned the ecosystem from a net CH4 sink to a net CH4 source after the third month, but during the three years the CH4 emission only balanced out a very small portion (0.3%) of FCO2. In non-inundation periods, FCH4 varied from -0.01 to 0.24mmolm-2d-1, with a mean (±SD) of 0.11±0.08mmolm-2d-1, while it ranged from 0.33 to 4.39mmolm-2d-1 during inundation, with a mean (±SD) of 2.17±1.16mmolm-2d-1. Daily and weekly FCH4 during non-inundation period were highly correlated with ground water table, soil moisture, and friction velocity, while FCH4 during inundation depended on inundation depth. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65275
Appears in Collections: 影响、适应和脆弱性
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作者单位: State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China; Center for Global Change and Earth Observations (CGCEO), Department of Geography, Michigan State University, East Lansing, MI, United States; Hunan Academy of Forestry, Changsha, China; Beijing Forestry University, Beijing, China; State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Science, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Gao S.,Chen J.,Tang Y.,et al. Ecosystem carbon (CO2 and CH4) fluxes of a Populus dettoides plantation in subtropical China during and post clear-cutting[J]. Forest Ecology and Management,2015-01-01,357