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题名:
The fluxes and controlling factors of N2O and CH4 emissions from freshwater marsh in Northeast China
作者: Yu, JunBao1,2; Liu, JingShuang2; Sun, ZhiGao1; Sun, WeiDong3; Wang, JinDa2; Wang, GuoPing2; Chen, XiaoBing(陈小兵)1
刊名: SCIENCE CHINA-EARTH SCIENCES
ISSN号: 1674-7313
出版日期: 2010-05-01
卷号: 53, 期号:5, 页码:700-709
关键词: freeze-thaw region ; freshwater marsh ; methane ; nitrous oxide ; controlling factors
学科分类: Geosciences, Multidisciplinary
产权排序: [Yu, JunBao; Sun, ZhiGao; Chen, XiaoBing] Chinese Acad Sci, Key Lab Coastal Envionment Proc, Yantai Inst Coastal Zone Res Sustainable Dev, Yantai 264003, Peoples R China; [Yu, JunBao; Liu, JingShuang; Wang, JinDa; Wang, GuoPing] Chinese Acad Sci, Key Lab Wetland Ecol & Environm, NE Inst Geog & Agr Ecol, Changchun 130012, Peoples R China; [Sun, WeiDong] Chinese Acad Sci, Key Lab Isotope Geochronol & Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China
通讯作者: Yu, JB, Chinese Acad Sci, Key Lab Coastal Envionment Proc, Yantai Inst Coastal Zone Res Sustainable Dev, Yantai 264003, Peoples R China
作者部门: 滨海湿地实验室 
中文摘要: Nitrous oxide (N2O) and methane (CH4) emissions were measured using a static chamber method in two adjacent plots of freshwater marsh predominated by Calamagrostis angustifolia, one is seasonal waterlogged (SW) and the other without surface water accumulation (NW), in Sanjiang Plain wetland (47 degrees 35'N, 133 degrees 31'E), northeast China, during 2002-2004. The diurnal and seasonal flux variations of both gases were significantly correlated with 5-cm-soil temperature. The NW marsh is a source of N2O and sink of CH4, while the SW marsh is sink of N2O and source of CH4. Remarkably, we observed a N2O emission peak under Eh of -300 to -100 mV, and CH4 emission peak under Eh of +300 to +400 mV, which indicate additional sources of N2O and CH4 for the freeze-thaw induced emission peaks of N2O and CH4 observed between late July and early August. Further study shows that the additional N2O and CH4 were emitted under the frozen soil after thawing.
英文摘要: Nitrous oxide (N2O) and methane (CH4) emissions were measured using a static chamber method in two adjacent plots of freshwater marsh predominated by Calamagrostis angustifolia, one is seasonal waterlogged (SW) and the other without surface water accumulation (NW), in Sanjiang Plain wetland (47 degrees 35'N, 133 degrees 31'E), northeast China, during 2002-2004. The diurnal and seasonal flux variations of both gases were significantly correlated with 5-cm-soil temperature. The NW marsh is a source of N2O and sink of CH4, while the SW marsh is sink of N2O and source of CH4. Remarkably, we observed a N2O emission peak under Eh of -300 to -100 mV, and CH4 emission peak under Eh of +300 to +400 mV, which indicate additional sources of N2O and CH4 for the freeze-thaw induced emission peaks of N2O and CH4 observed between late July and early August. Further study shows that the additional N2O and CH4 were emitted under the frozen soil after thawing.
研究领域[WOS]: Geology
关键词[WOS]: NITROUS-OXIDE EMISSIONS ; METHANE EMISSIONS ; NATURAL WETLANDS ; LOW-TEMPERATURES ; TRACE GASES ; RICE FIELDS ; SOIL REDOX ; THAW ; CO2 ; TABLE
文章类型: Article
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000277645400017
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.yic.ac.cn/handle/133337/3702
Appears in Collections:滨海湿地实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Key Lab Coastal Envionment Proc, Yantai Inst Coastal Zone Res Sustainable Dev, Yantai 264003, Peoples R China
2.Chinese Acad Sci, Key Lab Wetland Ecol & Environm, NE Inst Geog & Agr Ecol, Changchun 130012, Peoples R China
3.Chinese Acad Sci, Key Lab Isotope Geochronol & Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China

Recommended Citation:
Yu, JunBao,Liu, JingShuang,Sun, ZhiGao,et al. The fluxes and controlling factors of N2O and CH4 emissions from freshwater marsh in Northeast China[J]. SCIENCE CHINA-EARTH SCIENCES,2010,53(5):700-709.
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