DOI: 10.1016/j.atmosenv.2014.04.061
Scopus记录号: 2-s2.0-84899933336
论文题名: Methane emissions from temperate herbaceous peatland in the Sanjiang Plain of Northeast China
作者: Zhu X ; , Song C ; , Guo Y ; , Sun X ; , Zhang X ; , Miao Y
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 92 起始页码: 478
结束页码: 483
语种: 英语
英文关键词: Accurate prediction
; Peatland
; Time lag
; Water table
Scopus关键词: Atmospheric chemistry
; Groundwater
; Methane
; Accurate prediction
; Environmental factors
; Peatland
; Precipitation events
; Static chamber technique
; Time lag
; Water tables
; Water-filled pore space
; Wetlands
; methane
; aeration
; article
; atmospheric deposition
; Carex lasiocarpa
; China
; Cyperaceae
; environmental factor
; growing season
; moisture
; nonhuman
; peatland
; precipitation
; priority journal
; soil temperature
; temperate herbaceous peatland
; water table
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Peatlands are the significant source of atmospheric methane (CH4), which is produced during peat accumulation. In this study, we investigated CH4 emissions over two growing seasons from a Carex lasiocarpa-dominated peatland in the Sanjiang Plain in China using the static chamber technique. We also investigated the environmental factors controlling emissions during the two years of study, 2012 and 2013. CH4 emissions ranged from 0.07 to 56.01mg CH4-Cm-2h-1 with mean values of 7.33±1.65mgCm-2h-1, showing significant temporal patterns in both years with peak values in early June and middle August respectively. Variations in water table, soil temperature at 25cm depth and soil's water-filled pore space together explained 66.7% of the observed temporal variation of CH4 fluxes by the step-wise regression. Rapid and short-lived precipitation events might have no immediate influence on CH4 emissions, which primarily depended on the actual soil aeration and moisture conditions. A simple relationship between single parameter and CH4 fluxes would be overruled once the water table dropped below the critical threshold for CH4 release. The amount of CH4 emitted from the herbaceous peatland in the Sanjiang Plain during the growing season was about 6.93×1012mgC. Our results suggested that the herbaceous peatland in the Sanjiang Plain is an important source of atmospheric CH4. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81041
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 4888 Shengbei Rd, Changchun, Jilin 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China
Recommended Citation:
Zhu X,, Song C,, Guo Y,et al. Methane emissions from temperate herbaceous peatland in the Sanjiang Plain of Northeast China[J]. Atmospheric Environment,2014-01-01,92