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学科主题: Environmental Sciences; Meteorology & Atmospheric Sciences
题名: Methane and carbon dioxide fluxes from a shallow hypereutrophic subtropical Lake in China
作者: Xing, YP; Xie, P; Yang, H; Ni, LY; Wang, YS; Rong, KW
通讯作者: Xie, P, CAS, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
关键词: methane emission ; carbon dioxide flux ; NPP ; temperature ; subtropical lake
刊名: ATMOSPHERIC ENVIRONMENT
发表日期: 2005-09-01
DOI: 10.1016/j.atmosenv.2005.06.010
卷: 39, 期:30, 页:5532-5540
收录类别: SCI
文章类型: Article
部门归属: CAS, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China; Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China; Chinese Acad Sci, Inst Atmospher Phys, Beijing 100029, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]: Environmental Sciences ; Meteorology & Atmospheric Sciences
研究领域[WOS]: Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
摘要: Up to now, there have been few studies in the annual fluxes of greenhouse gases in lakes of subtropical regions. The fluxes of methane (CH4) and carbon dioxide (CO2) across air-water interface were measured in a shallow, hypereutrophic, subtropical Lake Donghu (China) over a year cycle, using a static chamber technique. During the year, Lake Donghu emitted CH4 and CO2; the average flux of CH4 and CO2 was 23.3 +/- 18.6 and 332.3 +/- 160.1 mg m(-2) d(-1), respectively. The fluxes of CH4 and CO2 showed strong seasonal dynamics: CH4 emission rate was highest in summer, remaining low in other seasons, whereas CO2 was adsorbed from the atmosphere in spring and summer, but exhibited a large emission in winter. Annual carbon (C) budget across air-water interface in Lake Donghu was estimated to be 7.52 +/- 4.07 x 10(8) g. CH4 emission was correlated positively with net primary production (NPP) and temperature, whereas CO2 flux correlated negatively with NPP and temperature; however, there were no significant relationships between the fluxes of CH4 and CO2 and dissolved organic carbon, a significant difference from boreal lakes, indicating that phytoplankton rather than allochthonous matter regulated C dynamics across air-water interface of subtropical lake enriched nutrient content. (c) 2005 Elsevier Ltd. All rights reserved.
英文摘要: Up to now, there have been few studies in the annual fluxes of greenhouse gases in lakes of subtropical regions. The fluxes of methane (CH4) and carbon dioxide (CO2) across air-water interface were measured in a shallow, hypereutrophic, subtropical Lake Donghu (China) over a year cycle, using a static chamber technique. During the year, Lake Donghu emitted CH4 and CO2; the average flux of CH4 and CO2 was 23.3 +/- 18.6 and 332.3 +/- 160.1 mg m(-2) d(-1), respectively. The fluxes of CH4 and CO2 showed strong seasonal dynamics: CH4 emission rate was highest in summer, remaining low in other seasons, whereas CO2 was adsorbed from the atmosphere in spring and summer, but exhibited a large emission in winter. Annual carbon (C) budget across air-water interface in Lake Donghu was estimated to be 7.52 +/- 4.07 x 10(8) g. CH4 emission was correlated positively with net primary production (NPP) and temperature, whereas CO2 flux correlated negatively with NPP and temperature; however, there were no significant relationships between the fluxes of CH4 and CO2 and dissolved organic carbon, a significant difference from boreal lakes, indicating that phytoplankton rather than allochthonous matter regulated C dynamics across air-water interface of subtropical lake enriched nutrient content. (c) 2005 Elsevier Ltd. All rights reserved.
关键词[WOS]: NORTHERN WISCONSIN ; SEASONAL-VARIATION ; TEMPERATE LAKES ; BOREAL LAKES ; ICE MELT ; EMISSIONS ; WATER ; SWAMP ; CH4 ; SUPERSATURATION
语种: 英语
WOS记录号: WOS:000232395400012
ISSN号: 1352-2310
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/9138
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.CAS, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Chinese Acad Sci, Inst Atmospher Phys, Beijing 100029, Peoples R China

Recommended Citation:
Xing, YP; Xie, P; Yang, H; Ni, LY; Wang, YS; Rong, KW.Methane and carbon dioxide fluxes from a shallow hypereutrophic subtropical Lake in China,ATMOSPHERIC ENVIRONMENT,2005,39(30):5532-5540
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