Greenhouse gas emissions from penguin guanos and ornithogenic soils in coastal Antarctica: Effects of freezing-thawing cycles
文献类型：期刊论文
| 作者 | Zhu, Renbin1,2; Liu, Yashu1; Ma, Erdeng2; Sun, Jianjun1; Xu, Hua2; Sun, Liguang1 |
| 刊名 | ATMOSPHERIC ENVIRONMENT
 |
| 出版日期 | 2009-05-01 |
| 卷号 | 43期号:14页码:2336-2347 |
| 关键词 | Antarctica Freezing-thawing cycles N2O CO2 CH4 Ornithogenic soil Penguin guano |
| ISSN号 | 1352-2310 |
| DOI | 10.1016/j.atmosenv.2009.01.027 |
| 通讯作者 | Zhu, Renbin(zhurb@ustc.edu.cn) |
| 英文摘要 | In coastal Antarctica, freezing and thawing influence many physical, chemical and biological processes for ice-free tundra ecosystems. including the production of greenhouse gases (GHGs). In this study, penguin guanos and ornithogenic soil cores were collected from four penguin colonies and one seal colony in coastal Antarctica, and experimentally subjected to three freezing-thawing cycles (FTCs) under ambient air and under N-2. We investigated the effects of FTCs on the emissions of three GHGs including nitrous oxide (N2O), carbon dioxide (CO2) and methane (CH4). The GHG emission rates were extremely low in frozen penguin guanos or ornithogenic soils. However, there was a fast increase in the emission rates of three GHGs following thawing. During FTCs, cumulative N2O emissions from ornithogenic soils were greatly higher than those from penguin guanos under ambient air or under N-2. The highest N2O Cumulative emission of 138.24 mu g N2O-N kg(-1) was observed from seal colony soils. Cumulative CO2 and CH4 emissions from penguin guanos were one to three orders of magnitude higher than those from ornithogenic soils. The highest Cumulative CO2 (433.0 MgCO2-C kg(-1)) and CH4 (2.9 mgCH(4)-C kg(-1)) emissions occurred in emperor penguin guanos. Penguin guano was a stronger emitter for CH4 and CO2 while ornithogenic soil was a stronger emitter for N2O during FTCs. CO2 and CH4 fluxes had a correlation with total organic carbon (TOC) and soil/guano moisture (M-c) in penguin guanos and ornithogenic soils. The specific CO2-C production rate (CO2-C/TOC) indicated that the bioavailability of TOC was markedly larger in penguin guanos than in ornithogenic soils during FTCs. This study showed that FTC-released organic C and N from sea animal excreta may play a significant role in FTC-related GHG emissions, which may account for a large proportion of annual fluxes from tundra ecosystems in coastal Antarctica. (C) 2009 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | NITROUS-OXIDE EMISSIONS ; ISOTOPE NATURAL-ABUNDANCE ; N2O EMISSIONS ; METHANE EMISSIONS ; TUNDRA SOILS ; SPRING THAW ; WATER ; FOREST ; CO2 ; DENITRIFICATION |
| 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:000265809300013 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558777 |
| 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 Environm, Hefei 230026, Anhui, 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,Ma, Erdeng,et al. Greenhouse gas emissions from penguin guanos and ornithogenic soils in coastal Antarctica: Effects of freezing-thawing cycles[J]. ATMOSPHERIC ENVIRONMENT,2009,43(14):2336-2347. |
| APA | Zhu, Renbin,Liu, Yashu,Ma, Erdeng,Sun, Jianjun,Xu, Hua,&Sun, Liguang.(2009).Greenhouse gas emissions from penguin guanos and ornithogenic soils in coastal Antarctica: Effects of freezing-thawing cycles.ATMOSPHERIC ENVIRONMENT,43(14),2336-2347. |
| MLA | Zhu, Renbin,et al."Greenhouse gas emissions from penguin guanos and ornithogenic soils in coastal Antarctica: Effects of freezing-thawing cycles".ATMOSPHERIC ENVIRONMENT 43.14(2009):2336-2347. |
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来源：南京土壤研究所
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