| 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 Publication | FOREST ECOLOGY AND MANAGEMENT
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| Volume | 357Pages:206-219 |
| Abstract | 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 (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. |
| Keyword | Ghg Flux Carbon Balance Eddy Covariance Poplar Plantation Harvest Effect Forest Regeneration |
| WOS Research Area | Forestry |
| Funding Organization | US-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) |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/24664 |
| Collection | 城市与区域生态国家重点实验室 |
| Affiliation | 1.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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