Can abandoned peatland pasture sequestrate more carbon dioxide from the atmosphere than an adjacent pristine bog in Newfoundland, Canada?
文献类型：期刊论文
| 作者 | Wang, Mei1; Wu, Jianghua1; Lafleur, Peter M.2; Luan, Junwei3; Chen, Huai4; Zhu, Xinbiao5 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2018 |
| 卷号 | 248期号:2018页码:91-108 |
| 关键词 | Boreal bog Eddy covariance CO2 fluxes Abandoned peatland pasture Agricultural management Climate change |
| ISSN号 | 0168-1923 |
| DOI | 10.1016/j.agrformet.2017.09.010 |
| 产权排序 | 4 |
| 文献子类 | Article |
| 英文摘要 | Net ecosystem exchange of carbon dioxide (NEE) and its components, gross primary productivity (GPP) and ecosystem respiration (ER), were compared between a bog and an abandoned peatland pasture within the same peatland complex in western Newfoundland, Canada. Measurements based on the eddy covariance technique from April 2014 to April 2016 were used to examine the influence of agricultural management and abandonment on peatland carbon dioxide (CO2) exchange. NEE, GPP and ER at both sites showed pronounced seasonal variation, peaking near the middle growing season. The maximum net CO2 uptake rate of -28.61 mu mol m(-2) s(-1) and emission rate of 14.39 mu mol m(-2) s(-1) at the pasture were significantly higher than those at the bog (-9.67 mu mol m(-2) s(-1) and 5.50 mu mol m(-2) s(-1), respectively). Daytime average GPP was related to photosynthetic photon flux density and air temperature and the nighttime average ER decreased with soil water content, but increased with surface soil temperature for both sites. Annual NEE of the pasture (-128 +/- 60 g C m(-2) yr(-1) in 2014-15 and -124 +/- 56 g C m(-2) yr(-1) in 2015-16) was considerably larger than that of the bog (-46 +/- 36 g C m(-2) yr(-1) in 2014-15). GPP of 1086 +/- 141 g C m(-2) yr(-1) in 2014-15 and 982 +/- 123 g C m(-2) yr(-1) in 2015-16 and ER of 957 129 g C m(-2) yr(-1) in 2014-15 and 858 +/- 112 g C m(-2) yr(-1) in 2015-16 at the pasture were approximately twice the magnitude of the corresponding fluxes at the bog. The difference in GPP between the bog and pasture was mainly related to their different aboveground biomass. Higher ER at the pasture was probably related to its lower water table depth, greater substrate availability and higher autotrophic respiration. Unlike previous findings that managed peat lands are large CO2 emitters, our results suggest that abandoned peatland pastures can function like natural grasslands and sequester considerable amounts of CO2 from the atmosphere. |
| 学科主题 | Agriculture/agronomy |
| URL标识 | 查看原文 |
| WOS关键词 | NET ECOSYSTEM EXCHANGE ; GREENHOUSE-GAS BALANCES ; LAND-USE CHANGE ; CO2 EXCHANGE ; INTERANNUAL VARIABILITY ; TIME-SERIES ; WINTER CO2 ; TEMPERATURE-DEPENDENCE ; NORTHERN PEATLAND ; CH4 EMISSIONS |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000417659700008 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://210.75.237.14/handle/351003/29766]  |
| 专题 | 生物多样性与生态系统服务领域_生态研究 成都生物研究所_生态研究 生物多样性与生态系统服务领域_中国科学院山地生态恢复与生物资源利用重点实验室 生物多样性与生态系统服务领域_生态系统恢复与生物多样性保育四川省重点实验室 |
| 通讯作者 | Wu, Jianghua |
| 作者单位 | 1.Sustainable Resource Management, Grenfell Campus, Memorial University of Newfoundland, Corner Brook, A2H 6P9, Canada; 2.Department of Geography, Trent University, Peterborough, ON, K9J 7B8, Canada; 3.International Center for Bamboo and Rattan, Beijing, 100102, China; 4.Key Laboratory of Mountain Ecological Restoration and Bio-resource Utilization & Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China; 5.Atlantic Forestry Centre, Canadian Forest Service, Natural Resources Canada, Corner Brook, NL, A2H 5G4, Canada |
| 推荐引用方式 GB/T 7714 | Wang, Mei,Wu, Jianghua,Lafleur, Peter M.,et al. Can abandoned peatland pasture sequestrate more carbon dioxide from the atmosphere than an adjacent pristine bog in Newfoundland, Canada?[J]. AGRICULTURAL AND FOREST METEOROLOGY,2018,248(2018):91-108. |
| APA | Wang, Mei,Wu, Jianghua,Lafleur, Peter M.,Luan, Junwei,Chen, Huai,&Zhu, Xinbiao.(2018).Can abandoned peatland pasture sequestrate more carbon dioxide from the atmosphere than an adjacent pristine bog in Newfoundland, Canada?.AGRICULTURAL AND FOREST METEOROLOGY,248(2018),91-108. |
| MLA | Wang, Mei,et al."Can abandoned peatland pasture sequestrate more carbon dioxide from the atmosphere than an adjacent pristine bog in Newfoundland, Canada?".AGRICULTURAL AND FOREST METEOROLOGY 248.2018(2018):91-108. |
入库方式： OAI收割
来源：成都生物研究所
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