DOI: 10.1016/j.foreco.2012.11.044
Scopus记录号: 2-s2.0-84871858436
论文题名: Forest fires in southwestern Brazilian Amazonia: Estimates of area and potential carbon emissions
作者: Vasconcelos S.S.D. ; Fearnside P.M. ; Graça P.M.L.D.A. ; Nogueira E.M. ; Oliveira L.C.D. ; Figueiredo E.O.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 291 起始页码: 199
结束页码: 208
语种: 英语
英文关键词: Amazon forest
; Brazil
; Carbon emission
; Global warming
; Greenhouse gases
; Satellite imagery
Scopus关键词: Amazon forests
; Brazil
; Brazilian Amazonia
; Carbon emissions
; Carbon stocks
; Fire event
; Fire scars
; Forest biomass
; Forest cover
; Forest fires
; Landsat-5
; Satellite images
; Tree mortality
; Biomass
; Carbon
; Deforestation
; Global warming
; Greenhouse gases
; Satellite imagery
; Fires
; aboveground biomass
; belowground biomass
; carbon emission
; carbon sequestration
; combustion
; decomposition
; digitization
; drought
; forest cover
; forest fire
; global warming
; greenhouse gas
; Landsat thematic mapper
; mortality
; oxidation
; satellite imagery
; sustainable development
; vegetation mapping
; visual analysis
; Biomass
; Brazil
; Carbon
; Deforestation
; Emission
; Fires
; Greenhouse Gases
; Image Analysis
; Satellites
; Acre [Brazil]
; Amazonas [Brazil]
; Brazil
; Rondonia
英文摘要: Areas affected by forest fires that occurred in 2005 were mapped in the municipalities of Boca do Acre and Lábrea (in the southern part of Brazil's state of Amazonas) and estimates were made of the loss of biomass and carbon stock and the committed emissions from increased tree mortality due to fire. Fire scars observed on Landsat-5 TM satellite images from 2004 to 2006 were visually interpreted and digitized; over 865.6km2 of forest affected by fire were mapped, the majority (2.9% of the total forest cover) concentrated along the southern edges of the municipalities, which border on the states of Rondônia and Acre. The greatest loss of biomass due to the increase in tree mortality was indicated by the survey made 4years after the fires: 4.5×106Mg total (above+below-ground) and 3.7×106Mg (only above-ground). Consequently, 2.2×106MgC (total) and 1.8×106MgC (above-ground) of potential carbon emissions were committed from the initial burn of forest biomass and from trees killed by the fire. Emissions occur both through oxidation of dead biomass by decomposition or through combustion in subsequent fire events. Our results indicate that fires can affect extensive tracts of forest and can emit significant amounts of carbon to the atmosphere in periods of drought. Fire plays a significant role as a threat to the biological balance of the forest and causes loss of biomass and emission of greenhouse gases that have critical implications for the future of forests in the Amazon. © 2012 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66748
Appears in Collections: 影响、适应和脆弱性
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作者单位: National Institute for Research in Amazonia (INPA), Av. André Araújo 2936, CEP 69060-000 Manaus, Amazonas, Brazil; Brazilian Enterprise for Agricultural and Ranching Research (Embrapa), BR-364 km 14, CEP 69900-000 Rio Branco, Acre, Brazil
Recommended Citation:
Vasconcelos S.S.D.,Fearnside P.M.,Graça P.M.L.D.A.,et al. Forest fires in southwestern Brazilian Amazonia: Estimates of area and potential carbon emissions[J]. Forest Ecology and Management,2013-01-01,291