Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aad346 |
Camouflaged as degraded wax: hygroscopic aerosols contribute to leaf desiccation, tree mortality, and forest decline | |
Burkhardt, Juergen1; Zinsmeister, Daniel1; Grantz, David A.1,2; Vidic, Sonia3; Sutton, Mark A.4; Hunsche, Mauricio5,6; Shyam, Pariyar1,6 | |
2018-08-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2018 |
卷号 | 13期号:8 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; USA; Croatia; Scotland |
英文摘要 | Some 40 years ago, air pollution caused widespread forest decline in Central Europe and eastern North America. More recently, high levels of tree mortality worldwide are thought to be driven by rising temperatures and increasing atmospheric drought. A neglected factor, possibly contributing to both phenomena, is the foliar accumulation of hygroscopic aerosols. Recent experiments with experimentally added aerosols revealed that foliar aerosol accumulation can (i) create the microscopic impression of 'wax degradation', considered an important proxy of forest decline associated with air pollution, though the mechanism remains unexplained; and (ii) increase epidermal minimum conductance (g(min)), a measure of cuticular permeability and completeness of stomatal closure-both could lead to reduced drought tolerance. Here, those studies with applied aerosol are extended by addressing plant responses to reduction of ambient aerosol. Scots pine, silver fir, and common oak seedlings were grown for 2 years in greenhouses ventilated with ambient air (AA) or air filtered to remove nearly all aerosol particles (FA). Removal of ambient aerosol prevented the development of amorphous structures viewed in the electron microscope that have typically been interpreted as degraded waxes. Lower g(min) values suggested that FA plants had better stomatal control and therefore greater drought tolerance than AA plants. The co-occurrence of apparent wax degradation and reduced drought tolerance in AA plants suggests a common cause. This may be mediated by the deliquescence and spreading of hygroscopic aerosols across the leaf surface. The liquid film produced may penetrate the stomata and facilitate unproductive stomatal transpiration. In this way, aerosol pollution may enhance the impacts of atmospheric drought, and may damage trees and forests on large spatial scales. |
英文关键词 | aerosol pollution Anthropocene desiccant forest decline silver fir tree mortality VPD |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000439983000001 |
WOS关键词 | WATER-USE EFFICIENCY ; AIR-POLLUTION ; NORWAY SPRUCE ; EPICUTICULAR WAX ; NEEDLE SURFACE ; DRY DEPOSITION ; DROUGHT ; PLANTS ; PARTICLES ; LEAVES |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/34274 |
专题 | 气候变化 |
作者单位 | 1.Univ Bonn, Inst Crop Sci & Resource Conservat, Plant Nutr Grp, Karlrobert Kreiten Str 13, D-53115 Bonn, Germany; 2.Univ Calif Riverside, Kearney Agr Ctr, Dept Bot & Plant Sci, Parlier, CA 93648 USA; 3.Air Qual Div, Meteorol & Hydrol Serv, HR-10000 Zagreb, Croatia; 4.Edinburgh Res Stn, Ctr Ecol & Hydrol, Penicuik EH26 0QB, Midlothian, Scotland; 5.COMPO EXPERT GmbH, Krogerweg 10, D-48155 Munster, Germany; 6.Univ Bonn, Inst Crop Sci & Resource Conservat, Hort Sci Grp, Hugel 6, D-53121 Bonn, Germany |
推荐引用方式 GB/T 7714 | Burkhardt, Juergen,Zinsmeister, Daniel,Grantz, David A.,et al. Camouflaged as degraded wax: hygroscopic aerosols contribute to leaf desiccation, tree mortality, and forest decline[J]. ENVIRONMENTAL RESEARCH LETTERS,2018,13(8). |
APA | Burkhardt, Juergen.,Zinsmeister, Daniel.,Grantz, David A..,Vidic, Sonia.,Sutton, Mark A..,...&Shyam, Pariyar.(2018).Camouflaged as degraded wax: hygroscopic aerosols contribute to leaf desiccation, tree mortality, and forest decline.ENVIRONMENTAL RESEARCH LETTERS,13(8). |
MLA | Burkhardt, Juergen,et al."Camouflaged as degraded wax: hygroscopic aerosols contribute to leaf desiccation, tree mortality, and forest decline".ENVIRONMENTAL RESEARCH LETTERS 13.8(2018). |
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