气候变化领域集成服务门户(CCPortal): Efficient atmospheric cleansing of oxidized organic trace gases by vegetation

CCPortal

DOI	10.1126/science.1192534
	Efficient atmospheric cleansing of oxidized organic trace gases by vegetation
	Karl T.; Harley P.; Emmons L.; Thornton B.; Guenther A.; Basu C.; Turnipseed A.; Jardine K.
发表日期	2010
ISSN	0036-8075
起始页码	816
结束页码	819
卷号	330 期号:6005
英文摘要	The biosphere is the major source and sink of nonmethane volatile organic compounds (VOCs) in the atmosphere. Gas-phase chemical reactions initiate the removal of these compounds from the atmosphere, which ultimately proceeds via deposition at the surface or direct oxidation to carbon monoxide or carbon dioxide. We performed ecosystem-scale flux measurements that show that the removal of oxygenated VOC via dry deposition is substantially larger than is currently assumed for deciduous ecosystems. Laboratory experiments indicate efficient enzymatic conversion and potential up-regulation of various stress-related genes, leading to enhanced uptake rates as a response to ozone and methyl vinyl ketone exposure or mechanical wounding. A revised scheme for the uptake of oxygenated VOCs, incorporated into a global chemistry-transport model, predicts appreciable regional changes in annual dry deposition fluxes.
英文关键词	carbon dioxide; carbon monoxide; ketone; ozone; vinyl derivative; volatile organic compound; biological uptake; biosphere; carbon dioxide; carbon monoxide; deciduous tree; dry deposition; ecosystem response; enzyme activity; gene expression; ketone; laboratory method; measurement method; numerical model; oxidation; oxygenation; ozone; pollutant removal; terrestrial ecosystem; trace gas; vegetation type; volatile organic compound; article; atmosphere; atmospheric deposition; biosphere; cleaning; dry deposition; ecosystem; environmental exposure; oxidation; oxygenation; prediction; priority journal; upregulation; vegetation; Atmosphere; Ecosystem; Gene Expression Regulation, Plant; Oxidation-Reduction; Plant Leaves; Plants; Populus; Stress, Physiological; Trees; Tropical Climate; Up-Regulation; Volatile Organic Compounds
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244219
作者单位	National Center for Atmospheric Research, Boulder, CO 80301, United States; School of Biological Sciences, University of Northern Colorado, Greeley, CO 80639, United States; Biosphere 2, University of Arizona, Tucson, AZ 85738, United States
推荐引用方式 GB/T 7714	Karl T.,Harley P.,Emmons L.,et al. Efficient atmospheric cleansing of oxidized organic trace gases by vegetation[J],2010,330(6005).
APA	Karl T..,Harley P..,Emmons L..,Thornton B..,Guenther A..,...&Jardine K..(2010).Efficient atmospheric cleansing of oxidized organic trace gases by vegetation.Science,330(6005).
MLA	Karl T.,et al."Efficient atmospheric cleansing of oxidized organic trace gases by vegetation".Science 330.6005(2010).