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Ecosystem carbon (CO2 and CH4) fluxes of a Populus dettoides plantation in subtropical China during and post clear-cutting
Gao, Shenghua1; Chen, Jiquan2,3; Tang, Yuxi4; Xie, Jing5; Zhang, Rui6; Tang, Jie4; Zhang, Xudong1
2015-12-01
Source PublicationFOREST ECOLOGY AND MANAGEMENT
Volume357Pages:206-219
AbstractPoplar 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 (F-CO2 and F-CH4) 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 +/- 52.5 g-C m(-2) (95% confidence interval) in the harvesting year, with -53.6 +/- 22.8 g-C m(-2) the first year and -290.7 +/- 34.2 g-C m(-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 F-CO2. In non-inundation periods, F-CH4 varied from -0.01 to 0.24 mmol m(-2) d(-1), with a mean (SD) of 0.11 +/- 0.08 mmol m(-2) d(-1), while it ranged from 0.33 to 4.39 mmol m(-2) d(-1) during inundation, with a mean (+/- SD) of 2.17 +/- 1.16 mmol m(-2) d(-1). Daily and weekly F-CH4 during non-inundation period were highly correlated with ground water table, soil moisture, and friction velocity, while F-CH4 during inundation depended on inundation depth. (C) 2015 Elsevier B.V. All rights reserved.
KeywordGhg Flux Carbon Balance Eddy Covariance Poplar Plantation Harvest Effect Forest Regeneration
WOS Research AreaForestry
Funding OrganizationUS-China Carbon Consortium (USCCC) ; US-China Carbon Consortium (USCCC) ; National Science & Technology Pillar Program Projects(2015BAD07B04 ; National Science & Technology Pillar Program Projects(2015BAD07B04 ; 2015BAD07B07) ; 2015BAD07B07)
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Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/24664
Collection城市与区域生态国家重点实验室
Affiliation1.Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China
2.Michigan State Univ, Ctr Global Change & Earth Observat CGCEO, E Lansing, MI 48823 USA
3.Michigan State Univ, Dept Geog, E Lansing, MI 48823 USA
4.Hunan Acad Forestry, Changsha 410004, Hunan, Peoples R China
5.Beijing Forestry Univ, Beijing 100083, Peoples R China
6.Chinese Acad Sci, State Key Lab Urban & Reg Ecol, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China
Recommended Citation
GB/T 7714
Gao, Shenghua,Chen, Jiquan,Tang, Yuxi,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,2015,357:206-219.
APA Gao, Shenghua.,Chen, Jiquan.,Tang, Yuxi.,Xie, Jing.,Zhang, Rui.,...&Zhang, Xudong.(2015).Ecosystem carbon (CO2 and CH4) fluxes of a Populus dettoides plantation in subtropical China during and post clear-cutting.FOREST ECOLOGY AND MANAGEMENT,357,206-219.
MLA Gao, Shenghua,et al."Ecosystem carbon (CO2 and CH4) fluxes of a Populus dettoides plantation in subtropical China during and post clear-cutting".FOREST ECOLOGY AND MANAGEMENT 357(2015):206-219.
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