DOI: 10.1016/j.atmosenv.2015.02.008
Scopus记录号: 2-s2.0-84922386185
论文题名: A comparative study of daytime-based methane emission from two wetlands of Nepal Himalaya
作者: Zhu D ; , Wu N ; , Bhattarai N ; , Oli K ; P ; , Tsering K ; , Rawat G ; S ; , Chen H ; , Yang G ; , He Y ; , Joshi S ; , Rana P ; , Ismail M
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 106 起始页码: 196
结束页码: 203
语种: 英语
英文关键词: Daytime pattern
; Himalayan wetlands
; Methane emission
; Plant growth
; Soil temperature
; Standing water depth
Scopus关键词: Atmospheric thermodynamics
; Drought
; Lakes
; Methane
; Temperature
; Daytime pattern
; Methane emissions
; Plant growth
; Soil temperature
; Standing water depth
; Wetlands
; methane
; atmospheric pollution
; comparative study
; emission
; growth rate
; methane
; plant community
; soil temperature
; spatial variation
; water depth
; wetland
; air pollution
; air temperature
; altitude
; Article
; atmospheric pressure
; comparative study
; correlation analysis
; environmental factor
; Nepal
; plant community
; priority journal
; seasonal variation
; soil temperature
; wetland
; Himalayas
; Nepal
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: Natural wetlands constitute one of the major sources of methane emission to the atmosphere. Data on methane emission from wetlands on southern slopes of the Himalaya (SSH) have not been reported so far. Such data are very valuable for filling the gap and generating the whole emission patterns at regional or even global scale. We selected two wetlands at different altitudinal locations in Nepal, i.e. Beeshazar Lake (286ma.s.l.) and Dhaap Lake (2089ma.s.l.), to monitor the daytime methane emissions in monsoon season and dry season separately. Daytime methane emission varied between monsoon and dry seasons and also across different plant communities. The daytime methane emission variations were stronger in dry season than in monsoon season. The source/sink strengths of the two selected plant communities in each wetland were significantly different, presenting the strong spatial variation of methane emission within wetland. The methane emissions recorded in monsoon season were significantly higher (7.74±6.49mg CH4m-2h-1 and 1.00±1.23mg CH4m-2h-1 in low and high altitude wetlands, respectively) than those in dry season (1.84±4.57mg CH4m-2h-1 and 0.27±0.71mg CH4m-2h-1 in low and high altitude wetlands, respectively). Methane emissions from the low altitude wetland were significantly higher than those from the high altitude wetland in both of the seasons. Plant community height, standing water depth and soil temperature correlated to the methane emission from wetlands in this region. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81925
Appears in Collections: 气候变化事实与影响
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作者单位: International Centre for Integrated Mountain Development, Kathmandu GPO Box 3226, Nepal; Key Laboratory of Mountain Ecological Restoration and Bio-resources Utilization, Ecological Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China; Southwest University of Science and Technology, Mianyang, China
Recommended Citation:
Zhu D,, Wu N,, Bhattarai N,et al. A comparative study of daytime-based methane emission from two wetlands of Nepal Himalaya[J]. Atmospheric Environment,2015-01-01,106