globalchange  > 气候变化事实与影响
DOI: 10.1002/2017GB005709
Scopus记录号: 2-s2.0-85040174093
论文题名:
In Situ Tropical Peatland Fire Emission Factors and Their Variability, as Determined by Field Measurements in Peninsula Malaysia
作者: Smith T; E; L; , Evers S; , Yule C; M; , Gan J; Y
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2018
卷: 32, 期:1
起始页码: 18
结束页码: 31
语种: 英语
英文关键词: emission factors ; fire emissions ; greenhouse gases ; peat ; peatland degradation ; tropical peat
Scopus关键词: bulk density ; carbon dioxide ; deforestation ; degradation ; emission ; field method ; greenhouse gas ; in situ measurement ; measurement method ; peatland ; physicochemical property ; tropical region ; Malaysia ; Selangor ; West Malaysia ; Elaeis
英文摘要: Fires in tropical peatlands account for >25% of estimated total greenhouse gas emissions from deforestation and degradation. Despite significant global and regional impacts, our understanding of specific gaseous fire emission factors (EFs) from tropical peat burning is limited to a handful of studies. Furthermore, there is substantial variability in EFs between sampled fires and/or studies. For example, methane EFs vary by 91% between studies. Here we present new fire EFs for the tropical peatland ecosystem; the first EFs measured for Malaysian peatlands, and only the second comprehensive study of EFs in this crucial environment. During August 2015 (under El Niño conditions) and July 2016, we embarked on field campaigns to measure gaseous emissions at multiple peatland fires burning on deforested land in Southeast Pahang (2015) and oil palm plantations in North Selangor (2016), Peninsula Malaysia. Gaseous emissions were measured using open-path Fourier transform infrared spectroscopy. The IR spectra were used to retrieve mole fractions of 12 different gases present within the smoke (including carbon dioxide and methane), and these measurements used to calculate EFs. Peat samples were taken at each burn site for physicochemical analysis and to explore possible relationships between specific physicochemical properties and fire EFs. Here we present the first evidence to indicate that substrate bulk density affects methane fire EFs reported here. This novel explanation of interplume, within-biome variability, should be considered by those undertaking greenhouse gas accounting and haze forecasting in this region and is of importance to peatland management, particularly with respect to artificial compaction. ©2017. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77682
Appears in Collections:气候变化事实与影响

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作者单位: Department of Geography and Environment, London School of Economics and Political Science, London, United Kingdom; Department of Geography, King's College London, London, United Kingdom; Tropical Catchment Research Initiative, Kuala Lumpur, Malaysia; School of Natural Sciences and Psychology, Liverpool John Moores University, Liverpool, United Kingdom; School of Biosciences, University of Nottingham, Semenyih, Malaysia; Tropical Medicine and Biology Multidisciplinary Platform, School of Science, Monash University Malaysia, Subang Jaya, Malaysia; Global Environment Centre, Petaling Jaya, Malaysia

Recommended Citation:
Smith T,E,L,et al. In Situ Tropical Peatland Fire Emission Factors and Their Variability, as Determined by Field Measurements in Peninsula Malaysia[J]. Global Biogeochemical Cycles,2018-01-01,32(1)
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