Contribution of winter fluxes to the annual ch4,co2 and n2o emissions from freshwater marshes in the sanjiang plain
文献类型：期刊论文
| 作者 | Hao, QJ; Wang, YS; Song, CC; Huang, Y |
| 刊名 | Journal of environmental sciences-china
 |
| 出版日期 | 2006 |
| 卷号 | 18期号:2页码:270-275 |
| 关键词 | Freshwater marsh Winter flux Greenhouse gas emission Sanjiang plain |
| ISSN号 | 1001-0742 |
| 通讯作者 | Wang, ys(wys@dq.cern.ac.cn) |
| 英文摘要 | Wetlands at the interface of the terrestrial and aquatic ecosystems are intensive sites for mineralization of organic matter, but the contribution of winter season fluxes of ch4, co2 and n2o from wetland ecosystems to annual budgets is poorly known. by using the static opaque chamber and gc techniques, fluxes of ch4, co2 and n2o at two freshwater marshes in the sanjiang plain were measured during the winter seasons of 2002/2003 and 2003/2004 with contrasting snow conditions and flooding regimes. the results showed that there were significant interannual and spatial differences in ch4, co2 and n2o fluxes. the carex lasiocarpa marsh emitted more ch4 and co2 while absorbed less n2o than the deyeuxia angustifolia marsh during the winter seasons. over the winter season, emissions of ch4, co2 and n2o ranged from 0.42 to 2.41 gc/m(2), from 24.13 to 50.16 gc/m(2), and from -25.20-to -148.96 mgn/m(2), respectively. the contributions of winter season ch4 and co2 emission to the annual budgets were 2.32%-4.62% and 22.17%-27.97%, respectively. marshes uptake n2o during the freezing period, while release n2o during the thawing period. the winter uptake equaled to 13.70%-86.69% of the growing-season loss. we conclude that gas exchange between soil/snow and the atmosphere in the winter season contributed greatly to the annual budgets and cannot be ignored in a cool temperate freshwater marsh in northeast china. |
| WOS关键词 | NITROUS-OXIDE EMISSIONS ; METHANE EMISSIONS ; CARBON-DIOXIDE ; CO2 EMISSION ; CH4 ; SOIL ; ECOSYSTEM ; THAW ; VARIABILITY ; PEATLANDS |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000236120700013 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2379781 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Wang, YS |
| 作者单位 | 1.Chinese Acad Sci, Inst Atmospher Phys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, NE Inst Geog & Agr Ecol, Changchun 130012, Jilin, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hao, QJ,Wang, YS,Song, CC,et al. Contribution of winter fluxes to the annual ch4,co2 and n2o emissions from freshwater marshes in the sanjiang plain[J]. Journal of environmental sciences-china,2006,18(2):270-275. |
| APA | Hao, QJ,Wang, YS,Song, CC,&Huang, Y.(2006).Contribution of winter fluxes to the annual ch4,co2 and n2o emissions from freshwater marshes in the sanjiang plain.Journal of environmental sciences-china,18(2),270-275. |
| MLA | Hao, QJ,et al."Contribution of winter fluxes to the annual ch4,co2 and n2o emissions from freshwater marshes in the sanjiang plain".Journal of environmental sciences-china 18.2(2006):270-275. |
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来源：中国科学院大学
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