DOI: 10.1016/j.atmosenv.2014.06.032
Scopus记录号: 2-s2.0-84907595253
论文题名: Soil and biomass mercury emissions during a prescribed fire in the Amazonian rain forest
作者: Melendez-Perez J ; J ; , Fostier A ; H ; , Carvalho J ; A ; , Windmöller C ; C ; , Santos J ; C ; , Carpi A
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 96 起始页码: 415
结束页码: 422
语种: 英语
英文关键词: Amazon
; Forest fire
; Mercury emissions
Scopus关键词: Biomass
; Deforestation
; Fires
; Mercury (metal)
; Soils
; Temperature
; Vegetation
; Amazon
; Biomass and soils
; Emission factors
; Forest fires
; Mercury concentrations
; Mercury emissions
; Prescribed fires
; Soil temperature
; Loading
; mercury
; biomass
; forest fire
; mercury (element)
; parameterization
; rainforest
; soil emission
; soil temperature
; article
; biomass
; combustion
; humidity
; precipitation
; priority journal
; rain forest
; soil
; soil moisture
; soil temperature
; vegetation
; Amazonia
; Brazil
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: Mercury stored in forests can be volatilized to the atmosphere during fires. Many factors influence this process such as mercury concentration, vegetation loading and the soil temperature reached during the fire. We quantified mercury emissions from biomass and soil during a prescribed fire in Brazil using the difference in mercury burden in vegetation and soil before and after burning, and data were critically compared with those previously obtained in a similar experiment in another part of the Amazonia. The calculated mercury emission factor was 4.1±1.4gHgha-1, with the main part (78%) originating from litterfall and O-horizon, and only 14% associated with live biomass. When considering the fuel burned loading, the emission factor ranged from 40 to 53μgHgkg-1. Data were also obtained on soil temperature profile and on Hg speciation in soil in an effort to relate these parameters to Hg emissions. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80961
Appears in Collections: 气候变化事实与影响
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作者单位: Institute of Chemistry, University of Campinas, UNICAMP, P.O. Box 6154, 13083-970 Campinas, SP, Brazil; São Paulo State University, UNESP, Av. Ariberto Pereira da Cunha 333, 12516-410 Guaratinguetá, SP, Brazil; Department of Chemistry, Minas Gerais Federal University, UFMG, P.O. Box 702, 31270-901 Belo Horizonte, MG, Brazil; National Space Research Institute, INPE, Rodovia Presidente Dutra Km 40, 12630-000 Cachoeira Paulista, SP, Brazil; John Jay College, CUNY, Department of Sciences, 445 W 59th St, New York, NY 10019, United States
Recommended Citation:
Melendez-Perez J,J,, Fostier A,et al. Soil and biomass mercury emissions during a prescribed fire in the Amazonian rain forest[J]. Atmospheric Environment,2014-01-01,96