DOI: 10.1016/j.foreco.2017.06.040
Scopus记录号: 2-s2.0-85024492841
论文题名: Northern Hemisphere forests at temperate and boreal latitudes are substantial pollen contributors to atmospheric bioaerosols
作者: Williams C.G. ; Després V.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 401 起始页码: 187
结束页码: 191
语种: 英语
英文关键词: Atmospheric aerosols
; Bioprecipitation
; Climate change
; Clouds microphysics
; Global circulation models (GCM)
; long-distance dispersal (LDD)
; long-range transport (LRT)
; Palynology
; Pollen allergy
; Pollen dispersal
; Primary atmospheric biological particles (PBAP)
; Water cycle
Scopus关键词: Aerosols
; Atmospheric aerosols
; Atmospheric thermodynamics
; Climate change
; Climate models
; Forestry
; Precipitation (meteorology)
; Bio-precipitation
; Biological particles
; Global circulation model
; Long range transport
; Long-distance dispersals
; Microphysics
; Palynology
; Pollen dispersal
; Water cycle
; Atmospheric movements
; Alnus
; Betula
; Picea
; Pinus taeda
; Zea mays
英文摘要: Forest pollen is a heavy contributor to atmospheric bioaerosols during spring months. This is important because bioaerosols make up 25% of the atmospheric aerosols shaping cloud formation, precipitation and ultimately climate. To test this premise, we drew from available literature, a meta-analysis of 25 forest pollen reports and a comparative analysis of Zea mays versus Pinus taeda pollen. Using available literature, we showed forest pollen grains are not too large or too few in the atmosphere and that some types are prone to bursting into subpollen particles (SPP). High forest pollen concentrations were consistent in the meta-analysis of 25 forest pollen reports from 1937 to 2014 at Northern Hemisphere latitudes ranging from 33°N to 64°N. In eight reports, pollen concentrations exceeded 104 grains m−3 for birch (Betula spp.), spruce (Picea spp.), pines (Pinus spp.) and alder (Alnus spp.). Southern Hemisphere forests had low forest pollen concentrations. Pinus taeda, as a woody perennial species, produced more pollen by three orders of magnitude when compared to Zea mays which serves as the current source of generalized global pollen emissions for general circulation models. Pinus taeda alone accounted for 3.3 Tg y−1 of the world's current estimate of global pollen emissions although its land area occupies only 0.2% of the world's forests. Forest pollen, whether intact and burst, is shown here to have the capacity for altitudinal ascent, atmospheric residency and long-distance transport. Thus forest pollen is concluded to be a substantial contributor to atmospheric bioaerosols for higher latitudes during spring in the Northern Hemisphere. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64182
Appears in Collections: 影响、适应和脆弱性
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作者单位: Environmental Sciences, American University, 4400 Massachusetts Ave NW, Washington D.C., United States; Molecular Physiology, Johannes Gutenberg-Universität, Joh.-von-Müller-Weg 6, Mainz, Germany
Recommended Citation:
Williams C.G.,Després V.. Northern Hemisphere forests at temperate and boreal latitudes are substantial pollen contributors to atmospheric bioaerosols[J]. Forest Ecology and Management,2017-01-01,401