Methane emissions from two tundra wetlands in eastern Antarctica
文献类型：期刊论文
| 作者 | Zhu, Renbin; Liu, Yashu; Sun, Liguang; Xu, Hua |
| 刊名 | ATMOSPHERIC ENVIRONMENT
 |
| 出版日期 | 2007-07-01 |
| 卷号 | 41期号:22页码:4711-4722 |
| 关键词 | methane flux natural wetlands Antarctica temporal variation spatial variation water table |
| ISSN号 | 1352-2310 |
| DOI | 10.1016/j.atmosenv.2007.03.030 |
| 通讯作者 | Zhu, Renbin(zhurb@ustc.edu.cn) |
| 英文摘要 | During the summertime of 2005/2006 net methane (CH4) fluxes and environmental variables were investigated in two tundra wetlands Wolong Marsh and Tuanjie Marsh of eastern Antarctica, using the closed chamber technique. At Wolong Marsh, the measurements were made at four wet tundra sites, four mesic tundra sites, and two dry sites. CH4 flux for wet tundra sites averaged 163.4 mu g m(-2) h(-1) and for the mesic sites 132.4 mu g m(-2) h(-1). For the dry sites, all the CH(4) fluxes showed the negative values with an average of -99.9 mu g m(-2) h(-1). At Tuanjie Marsh, flux measurements were made at two open ponds, two shallow fens and two dry sites. The average CH(4) flux for the pond sites was 170.4 mu g m(-2) h(-1) and for the fen sites 134.7 mu g m(-2) h(-1). For the dry sites CH(4) fluxes were approximately one order of magnitude lower than those for pond and fen sites and averaged 18.4 mu m(-2) h(-1). Spatial variations in CH(4) flux were primarily driven by the water table position at two tundra wetlands, whereas temporal variations in CH(4) flux from wet and mesic sites were related with the thermal regime of tundra soil layers. The fluxes from six observation sites showed a consistent diurnal cycle with the peak at 14:00 and the lowest at 2:00 (local time), which was correlated with ground temperature at the depth of 0-10cm. The CH(4) emissions from coastal wetlands could constitute an important part of the annual CH(4) budget for Antarctic tundra ecosystems. (C) 2007 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | WATER-TABLE ; SPATIAL VARIATION ; BOREAL PEATLANDS ; VASCULAR PLANTS ; NITROUS-OXIDE ; ARCTIC TUNDRA ; FLUX ; ALASKA ; CH4 ; ENVIRONMENTS |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000247769100013 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558689 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Zhu, Renbin |
| 作者单位 | 1.Univ Sci & Technol China, Inst Polar Inst, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Renbin,Liu, Yashu,Sun, Liguang,et al. Methane emissions from two tundra wetlands in eastern Antarctica[J]. ATMOSPHERIC ENVIRONMENT,2007,41(22):4711-4722. |
| APA | Zhu, Renbin,Liu, Yashu,Sun, Liguang,&Xu, Hua.(2007).Methane emissions from two tundra wetlands in eastern Antarctica.ATMOSPHERIC ENVIRONMENT,41(22),4711-4722. |
| MLA | Zhu, Renbin,et al."Methane emissions from two tundra wetlands in eastern Antarctica".ATMOSPHERIC ENVIRONMENT 41.22(2007):4711-4722. |
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来源：南京土壤研究所
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