期刊
ENVIRONMENTAL POLLUTION
卷 157, 期 4, 页码 1279-1286出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2008.11.049
关键词
Vehicle emissions; Nitric oxide; Nitrogen dioxide; Senescence; Leaf contact angle
资金
- UK Natural Environment Research Council
- Natural Environment Research Council [ceh010023] Funding Source: researchfish
Vehicle exhaust emissions are a dominant feature of urban environments and are widely believed to have detrimental effects on plants. The effects of diesel exhaust emissions on 12 herbaceous species were studied with respect to growth, flower development leaf senescence and leaf surface wax characteristics. A diesel generator was used to produce concentrations of nitrogen oxides (NOx) representative of urban conditions, in solardome chambers. Annual mean NOx concentrations ranged from 77 nl l(-1) to 98 nil l(-1), with NO:NO2 ratios of 1.4-2.2, providing a good experimental simulation of polluted roadside environments. Pollutant exposure resulted in species-specific changes in growth and phenology, with a consistent trend for accelerated senescence and delayed flowering. Leaf surface characteristics were also affected; contact angle measurements indicated changes in surface wax structure following pollutant exposure. The study demonstrated clearly the potential for realistic levels of vehicle exhaust pollution to have direct adverse effects on urban vegetation. (C) 2008 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据