Near-zero methane emission from an abandoned boreal peatland pasture based on eddy covariance measurements

doi:10.1371/journal.pone.0189692

	Near-zero methane emission from an abandoned boreal peatland pasture based on eddy covariance measurements
	Zhu, XB; Wang, M; Wu, JH; Luan, JW; Lafleur, P; Chen, H; Wu, JH (reprint author), Mem Univ Newfoundland, Sustainable Resource Management, Corner Brook, NF, Canada.
刊名	PLOS ONE
	2017
卷号	12 期号:12 页码:e0189692(1-21)
DOI	10.1371/journal.pone.0189692
产权排序	5
文献子类	Article
英文摘要	Although estimates of the annual methane (CH4) flux from agriculturally managed peatlands exist, knowledge of controls over the variation of CH4 at different time-scales is limited due to the lack of high temporal-resolution data. Here we present CH4 fluxes measured from May 2014 to April 2016 using the eddy covariance technique at an abandoned peatland pasture in western Newfoundland, Canada. The goals of the study were to identify the controls on the seasonal variations in CH4 flux and to quantify the annual CH4 flux. The seasonal variation in daily CH4 flux was not strong in the two study years, however a few periods of pronounced emissions occurred in the late growing season. The daily average CH4 flux was small relative to other studies, ranging from -4.1 to 9.9 nmol m(-2) s(-1) in 2014-15 and from -7.1 to 12.1 nmol m(-2) s(-1) in 2015-16. Stepwise multiple regression was used to investigate controls on CH4 flux and this analysis found shifting controls on CH4 flux at different periods of the growing season. During the early growing season CH4 flux was closely related to carbon dioxide fixation rates, suggesting substrate availability was the main control. The peak growing season CH4 flux was principally controlled by the CH4 oxidation in 2014, where the CH4 flux decreased and increased with soil temperature at 50 cm and soil water content at 10 cm, but a contrasting temperature-CH4 relation was found in 2015. The late growing season CH4 flux was found to be regulated by the variation in water table level and air temperature in 2014. The annual CH4 emission was near zero in both study years (0.36 +/- 0.30 g CH4 m(-2) yr(-1) in 2014-15 and 0.13 +/- 0.38 g CH4 m(-2) yr(-1) in 2015-16), but fell within the range of CH4 emissions reported for agriculturally managed peatlands elsewhere.
学科主题	Science & Technology - Other Topics
项目编号	中国科学院山地生态恢复与生物资源利用重点实验室
语种	英语
资助机构	This work was supported by Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grant (JW); Canada Foundation for Innovation-John R. Evans Leaders Fund (JW); Research & Development Corporation (RDC, NL)- Leverage R&D, RDC-Ignite R&D (JW); Agricultural Research Initiative (NL) (JW); Humber River Basin Research Initiative of NL (JW); Grenfell Campus' Start-up Research Fund (JW); Vice-President Research Fund (JW); the Graduate Student Stipend funding from the Institute for Biodiversity, Ecosystem Science, and Sustainability (IBES, NL) (JW); and Graduate Student Baseline Fellowship from School of Graduate Studies, Memorial University (MW).; This study was made possible by the support of the following funding to J. Wu: Natural Sciences and Engineering Research Council of Canada (NSERC)-Discovery Grant, Canada Foundation for Innovation-John R. Evans Leaders Fund, Research & Development Corporation (RDC, NL)- Leverage R&D, RDC-Ignite R&D, RDC-RCRI (Regional Collaborative Research Initiative), Agricultural Research Initiative (NL), Humber River Basin Research Initiative of NL, Grenfell Campus' Start-up Research Fund and Vice-President Research Fund, and the Graduate Student Stipend funding from the Institute for Biodiversity, Ecosystem Science, and Sustainability (IBES, NL). M. Wang received a Graduate Student Baseline Fellowship from School of Graduate Studies, Memorial University. Special thanks were given to Prof. Henry Mann for his help in vegetation identification, Ms. Denise Bouzane for her constructive guidance on the selection of our research site, the Department of Facility Management at Grenfell Campus, Memorial University for logistic support, and Mr. Keon Noseworthy for his help in the installation of our EC towers. We would like to thank the two anonymous reviewers and the academic editor for their constructive comments to improve the manuscript. ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; This work was supported by Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grant (JW); Canada Foundation for Innovation-John R. Evans Leaders Fund (JW); Research & Development Corporation (RDC, NL)- Leverage R&D, RDC-Ignite R&D (JW); Agricultural Research Initiative (NL) (JW); Humber River Basin Research Initiative of NL (JW); Grenfell Campus' Start-up Research Fund (JW); Vice-President Research Fund (JW); the Graduate Student Stipend funding from the Institute for Biodiversity, Ecosystem Science, and Sustainability (IBES, NL) (JW); and Graduate Student Baseline Fellowship from School of Graduate Studies, Memorial University (MW).; This study was made possible by the support of the following funding to J. Wu: Natural Sciences and Engineering Research Council of Canada (NSERC)-Discovery Grant, Canada Foundation for Innovation-John R. Evans Leaders Fund, Research & Development Corporation (RDC, NL)- Leverage R&D, RDC-Ignite R&D, RDC-RCRI (Regional Collaborative Research Initiative), Agricultural Research Initiative (NL), Humber River Basin Research Initiative of NL, Grenfell Campus' Start-up Research Fund and Vice-President Research Fund, and the Graduate Student Stipend funding from the Institute for Biodiversity, Ecosystem Science, and Sustainability (IBES, NL). M. Wang received a Graduate Student Baseline Fellowship from School of Graduate Studies, Memorial University. Special thanks were given to Prof. Henry Mann for his help in vegetation identification, Ms. Denise Bouzane for her constructive guidance on the selection of our research site, the Department of Facility Management at Grenfell Campus, Memorial University for logistic support, and Mr. Keon Noseworthy for his help in the installation of our EC towers. We would like to thank the two anonymous reviewers and the academic editor for their constructive comments to improve the manuscript. ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; Canada Foundation for Innovation-John R. Evans Leaders Fund ; Canada Foundation for Innovation-John R. Evans Leaders Fund ; Research & Development Corporation (RDC, NL)- Leverage R&D, RDC-Ignite RD ; Research & Development Corporation (RDC, NL)- Leverage R&D, RDC-Ignite RD ; Agricultural Research Initiative (NL) ; Agricultural Research Initiative (NL) ; Humber River Basin Research Initiative of NL ; Humber River Basin Research Initiative of NL ; Grenfell Campus' Start-up Research Fund ; Grenfell Campus' Start-up Research Fund ; Vice-President Research Fund ; Vice-President Research Fund ; Institute for Biodiversity, Ecosystem Science, and Sustainability (IBES, NL) ; Institute for Biodiversity, Ecosystem Science, and Sustainability (IBES, NL) ; School of Graduate Studies, Memorial University ; School of Graduate Studies, Memorial University ; RDC-RCRI (Regional Collaborative Research Initiative) ; RDC-RCRI (Regional Collaborative Research Initiative) ; This work was supported by Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grant (JW); Canada Foundation for Innovation-John R. Evans Leaders Fund (JW); Research & Development Corporation (RDC, NL)- Leverage R&D, RDC-Ignite R&D (JW); Agricultural Research Initiative (NL) (JW); Humber River Basin Research Initiative of NL (JW); Grenfell Campus' Start-up Research Fund (JW); Vice-President Research Fund (JW); the Graduate Student Stipend funding from the Institute for Biodiversity, Ecosystem Science, and Sustainability (IBES, NL) (JW); and Graduate Student Baseline Fellowship from School of Graduate Studies, Memorial University (MW).; This study was made possible by the support of the following funding to J. Wu: Natural Sciences and Engineering Research Council of Canada (NSERC)-Discovery Grant, Canada Foundation for Innovation-John R. Evans Leaders Fund, Research & Development Corporation (RDC, NL)- Leverage R&D, RDC-Ignite R&D, RDC-RCRI (Regional Collaborative Research Initiative), Agricultural Research Initiative (NL), Humber River Basin Research Initiative of NL, Grenfell Campus' Start-up Research Fund and Vice-President Research Fund, and the Graduate Student Stipend funding from the Institute for Biodiversity, Ecosystem Science, and Sustainability (IBES, NL). M. Wang received a Graduate Student Baseline Fellowship from School of Graduate Studies, Memorial University. Special thanks were given to Prof. Henry Mann for his help in vegetation identification, Ms. Denise Bouzane for her constructive guidance on the selection of our research site, the Department of Facility Management at Grenfell Campus, Memorial University for logistic support, and Mr. Keon Noseworthy for his help in the installation of our EC towers. We would like to thank the two anonymous reviewers and the academic editor for their constructive comments to improve the manuscript. ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; This work was supported by Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grant (JW); Canada Foundation for Innovation-John R. Evans Leaders Fund (JW); Research & Development Corporation (RDC, NL)- Leverage R&D, RDC-Ignite R&D (JW); Agricultural Research Initiative (NL) (JW); Humber River Basin Research Initiative of NL (JW); Grenfell Campus' Start-up Research Fund (JW); Vice-President Research Fund (JW); the Graduate Student Stipend funding from the Institute for Biodiversity, Ecosystem Science, and Sustainability (IBES, NL) (JW); and Graduate Student Baseline Fellowship from School of Graduate Studies, Memorial University (MW).; This study was made possible by the support of the following funding to J. Wu: Natural Sciences and Engineering Research Council of Canada (NSERC)-Discovery Grant, Canada Foundation for Innovation-John R. Evans Leaders Fund, Research & Development Corporation (RDC, NL)- Leverage R&D, RDC-Ignite R&D, RDC-RCRI (Regional Collaborative Research Initiative), Agricultural Research Initiative (NL), Humber River Basin Research Initiative of NL, Grenfell Campus' Start-up Research Fund and Vice-President Research Fund, and the Graduate Student Stipend funding from the Institute for Biodiversity, Ecosystem Science, and Sustainability (IBES, NL). M. Wang received a Graduate Student Baseline Fellowship from School of Graduate Studies, Memorial University. Special thanks were given to Prof. Henry Mann for his help in vegetation identification, Ms. Denise Bouzane for her constructive guidance on the selection of our research site, the Department of Facility Management at Grenfell Campus, Memorial University for logistic support, and Mr. Keon Noseworthy for his help in the installation of our EC towers. We would like to thank the two anonymous reviewers and the academic editor for their constructive comments to improve the manuscript. ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; Canada Foundation for Innovation-John R. Evans Leaders Fund ; Canada Foundation for Innovation-John R. Evans Leaders Fund ; Research & Development Corporation (RDC, NL)- Leverage R&D, RDC-Ignite RD ; Research & Development Corporation (RDC, NL)- Leverage R&D, RDC-Ignite RD ; Agricultural Research Initiative (NL) ; Agricultural Research Initiative (NL) ; Humber River Basin Research Initiative of NL ; Humber River Basin Research Initiative of NL ; Grenfell Campus' Start-up Research Fund ; Grenfell Campus' Start-up Research Fund ; Vice-President Research Fund ; Vice-President Research Fund ; Institute for Biodiversity, Ecosystem Science, and Sustainability (IBES, NL) ; Institute for Biodiversity, Ecosystem Science, and Sustainability (IBES, NL) ; School of Graduate Studies, Memorial University ; School of Graduate Studies, Memorial University ; RDC-RCRI (Regional Collaborative Research Initiative) ; RDC-RCRI (Regional Collaborative Research Initiative)
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/29080]
专题	成都生物研究所_生态研究
通讯作者	Wu, JH (reprint author), Mem Univ Newfoundland, Sustainable Resource Management, Corner Brook, NF, Canada.
推荐引用方式 GB/T 7714	Zhu, XB,Wang, M,Wu, JH,et al. Near-zero methane emission from an abandoned boreal peatland pasture based on eddy covariance measurements[J]. PLOS ONE,2017,12(12):e0189692(1-21).
APA	Zhu, XB.,Wang, M.,Wu, JH.,Luan, JW.,Lafleur, P.,...&Wu, JH .(2017).Near-zero methane emission from an abandoned boreal peatland pasture based on eddy covariance measurements.PLOS ONE,12(12),e0189692(1-21).
MLA	Zhu, XB,et al."Near-zero methane emission from an abandoned boreal peatland pasture based on eddy covariance measurements".PLOS ONE 12.12(2017):e0189692(1-21).