DOI: 10.1016/j.atmosenv.2014.08.004
Scopus记录号: 2-s2.0-84907595795
论文题名: Gaseous mercury emissions from soil following forest loss and land use changes: Field experiments in the United States and Brazil
作者: Carpi A ; , Fostier A ; H ; , Orta O ; R ; , dos Santos J ; C ; , Gittings M
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 96 起始页码: 423
结束页码: 429
语种: 英语
英文关键词: Amazon
; Brazil
; Forest fire
; Land use change
; Mercury
; Soil
Scopus关键词: Deforestation
; Experiments
; Land use
; Mercury (metal)
; Soils
; Amazon
; Atmospheric mercury
; Brazil
; Deciduous forest
; Forest fires
; Land-use change
; Large scale experiments
; Long-term release
; Soil surveys
; gaseous mercury
; mercury
; politef
; unclassified drug
; estimation method
; forest fire
; forest soil
; gas flow
; land use change
; mercury (element)
; soil emission
; article
; atmosphere
; Brazil
; canopy
; deforestation
; environmental monitoring
; environmental temperature
; field experiment
; fire
; forest soil
; land use
; light
; priority journal
; soil analysis
; United States
; Brazil
; Deforestation
; Forest Fires
; Land Use
; Mercury
; Soil
; Brazil
; United States
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: Forest ecosystems are a sink of atmospheric mercury, trapping the metal in the canopy, and storing it in the forest floor after litter fall. Fire liberates a portion of this mercury; however, little is known about the long-term release of mercury post deforestation. We conducted two large-scale experiments to study this phenomenon. In upstate New York, gaseous mercury emissions from soil were monitored continually using a Teflon dynamic surface flux chamber for two-weeks before and after cutting of the canopy on the edge of a deciduous forest. In Brazil, gaseous mercury emissions from soil were monitored in an intact Ombrophilous Open forest and an adjacent field site both before and after the field site was cleared by burning. In the intact forest, gaseous mercury emissions from soil averaged-0.73±1.84ngm-2h-1 (24-h monitoring) at the New York site, and 0.33±0.09ngm-2h-1 (daytime-only) at the Brazil site. After deforestation, gaseous mercury emissions from soil averaged 9.13±2.08ngm-2h-1 in New York and 21.2±0.35ngm-2h-1 at the Brazil site prior to burning. Gaseous mercury emissions averaged 74.9±0.73ngm-2h-1 after burning of the cut forest in Brazil. Extrapolating our data, measured over several weeks to months, to a full year period, deforested soil is estimated to release an additional 2.30gha-1yr-1 of gaseous mercury to the atmosphere in the Brazilian experiment and 0.41gha-1yr-1 in the New York experiment. In Brazil, this represents an additional 50% of the mercury load released during the fire itself. © 2014 The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81043
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Sciences, John Jay College, CUNY, 524 W 59th St, New York, NY 10019, United States; Earth and Environmental Sciences Program, CUNY Graduate Center, 365 Fifth Ave., New York, NY 10016, United States; Institute of Chemistry, University of Campinas, UNICAMP, P.O. Box 6154, 13083-970 Campinas, SP, Brazil; Department of Epidemiology, Harvard School of Public Health, 677 Huntington Avenue, Boston, MA 02115, United States; National Space Research Institute, INPE, Rodovia Presidente Dutra km 40, 12630-000 Cachoeira Paulista, SP, Brazil
Recommended Citation:
Carpi A,, Fostier A,H,et al. Gaseous mercury emissions from soil following forest loss and land use changes: Field experiments in the United States and Brazil[J]. Atmospheric Environment,2014-01-01,96