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题名: Carbonyl sulfide and dimethyl sulfide exchange between trees and the atmosphere
作者: Geng, CM; Mu, YJ
刊名: ATMOSPHERIC ENVIRONMENT
出版日期: 2006
卷号: 40, 期号:7, 页码:1373-1383
关键词: carbonyl sulfide ; dimethyl sulfide ; exchange rate ; trees
部门归属: 环境化学与生态毒理学国家重点实验室
英文摘要: The exchange rates of carbonyl sulfide (COS) and dimethyl sulfide (DMS) between 19 tree species and the atmosphere were investigated under natural field conditions using a static enclosure. Most of the investigated trees acted as sinks for atmospheric COS and a few trees, such as Salix matsudana Koidz. and Ulmus pumila L. could emit COS. The distinct diurnal variations of COS uptake for the investigated trees indicated that COS uptake strongly depended on photosynthetically active radiation (PAR). The average COS uptake rates for most species were much higher in summer than in autumn, indicating leaf age and temperature also might be the important influencing factors for COS uptake. Platanus orientalis L., Sophara japonica var. P. loud., Magnolia denudata Desr. and Sophora japonica L. were capable of continuously absorbing COS in daytime as well as in nighttime. For Platanus orientalis L., the maximal COS uptake rate and DMS emission rate on a single leaf area basis were -15.29 and 0.42 pmol m(-1) s(-1), respectively. The COS exchange fluxes for the investigated tree species depended strongly on the ambient COS mixing ratios. Significant correlation between DMS emissions and temperature was observed in summer. (c) 2005 Elsevier Ltd. All rights reserved.
WOS记录号: WOS:000236210300017
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/22838
Appears in Collections:环境化学与生态毒理学国家重点实验室_期刊论文

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