Key factors affecting spatial variation of methane emissions from freshwater marshes
文献类型：期刊论文
| 作者 | Ding, WX; Cai, ZC; Tsuruta, H; Li, XP |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2003-04-01 |
| 卷号 | 51期号:3页码:167-173 |
| 关键词 | marsh methane emission plant biomass spatial variation standing water depth stem density |
| ISSN号 | 0045-6535 |
| 通讯作者 | Ding, WX() |
| 英文摘要 | To understand the mechanism for spatial variation of CH4 emissions from marshes grown with different type of plants in a region and plots within a certain marsh grown with one type of plants, we measured CH4 emissions from a region in which eutrophic freshwater marshes were divided into three types: Carex lasiocarpa, Carex meyeruana and Deyeuxia angustifolia according to plant type as well as CH4 concentration in porewater, aboveground plant biomass and stem density in situ in Sanjiang Plain of Northeast China in August 2001. Spatial variation of CH4 emissions from both different marshes in a region and different plots within a certain marsh was high. The flux rates of CH4 emissions from three marshes ranged from 17.2 to 66.5 mg CH4 m(-2) h(-1) with 34.76% of variation coefficient, whereas the values in Carex lasiocarpa, Carex meyeriana and Deyeuxia angustifolia marshes varied from 21.6 to 66.5 (39.61%), from 17.2 to 45.0 (29.26%) and from 19.1 to 33.0 mg CH4 m(-2) h(-1) (17.51%), respectively. Both the flux rates and spatial variation of CH4 emissions strongly increased as standing water depth increased significantly. Standing water depth greatly governed the spatial variation of CH4 emissions from different marshes in a region by changing the amount of plant litters inundated in standing water, which provided labile organic C for methanogens and controlled CH4 concentrations in porewater. Moreover, the aboveground plant biomass determined spatial variation of CH4 emissions from plots within a certain marsh by controlling the pathways (stem density) of CH4 emissions from the marsh into the atmosphere. (C) 2003 Elsevier Science Ltd. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | WATER MARSHES ; RICE PADDIES ; WETLANDS ; CH4 ; MACROPHYTES ; CHINA ; PEAT ; FEN |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000181240400001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2559230 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Ding, WX |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, Lab Mat Cycling Pedosphere, Nanjing 210008, Peoples R China 2.Natl Inst Agroenvironm Sci, Tsukuba, Ibaraki 305, Japan |
| 推荐引用方式 GB/T 7714 | Ding, WX,Cai, ZC,Tsuruta, H,et al. Key factors affecting spatial variation of methane emissions from freshwater marshes[J]. CHEMOSPHERE,2003,51(3):167-173. |
| APA | Ding, WX,Cai, ZC,Tsuruta, H,&Li, XP.(2003).Key factors affecting spatial variation of methane emissions from freshwater marshes.CHEMOSPHERE,51(3),167-173. |
| MLA | Ding, WX,et al."Key factors affecting spatial variation of methane emissions from freshwater marshes".CHEMOSPHERE 51.3(2003):167-173. |
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来源：南京土壤研究所
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