A modeling study of the impact of urban trees on ozone

Nowak, David J.; Civerolo, Kevin; Rao, S. Trivikrama; Sistla, Gopal; Luley, Christopher J.; Crane, Daniel E.

doi:10.1016/s1352-2310(99)00394-5

Cited by 224 publications

(115 citation statements)

References 21 publications

Supporting

Mentioning

103

Contrasting

Unclassified

Order By: Relevance

“…Trees affect air quality through the direct removal of air pollutants, altering local microclimates and building energy use, and through the emission of volatile organic compounds (VOCs), which can contribute to O 3 and PM 2.5 formation (e.g., Chameides et al, 1988). However, integrative studies have revealed that trees, particularly low VOC emitting species, can be a viable strategy to help reduce urban O 3 levels (e.g., Taha, 1996;Nowak et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Tree and forest effects on air quality and human health in the United States

Nowak

Hirabayashi

Bodine

et al. 2014

Environmental Pollution

703

378

View full text Add to dashboard Cite

a b s t r a c tTrees remove air pollution by the interception of particulate matter on plant surfaces and the absorption of gaseous pollutants through the leaf stomata. However, the magnitude and value of the effects of trees and forests on air quality and human health across the United States remains unknown. Computer simulations with local environmental data reveal that trees and forests in the conterminous United States removed 17.4 million tonnes (t) of air pollution in 2010 (range: 9.0e23.2 million t), with human health effects valued at 6.8 billion U.S. dollars (range: $1.5e13.0 billion). This pollution removal equated to an average air quality improvement of less than one percent. Most of the pollution removal occurred in rural areas, while most of the health impacts and values were within urban areas. Health impacts included the avoidance of more than 850 incidences of human mortality and 670,000 incidences of acute respiratory symptoms.Published by Elsevier Ltd.

show abstract

Section: Introductionmentioning

confidence: 99%

Tree and forest effects on air quality and human health in the United States

Nowak

Hirabayashi

Bodine

et al. 2014

Environmental Pollution

703

378

View full text Add to dashboard Cite

show abstract

“…Despite recent studies employing modeling, wind tunnel, and field measurements to evaluate the role of vegetation on pollutant concentrations in urban areas (Baldauf et al, 2008;Brode et al, 2008;Hagler et al, 2012;Nowak, 2005;Nowak et al, 2000;Stone and Norman, 2006), the extent to which vegetation barriers can reduce air pollution near roads under varying traffic and meteorological conditions remains uncertain.…”

Section: Introductionmentioning

confidence: 99%

“…Removal of gaseous pollutants by trees can be permanent, while trees typically serve as a temporary retention site for particles. The removed particles can be resuspended to the atmosphere during turbulent winds, washed off by precipitation, or dropped to the ground with leaf and twig fall (Nowak et al, 2000). This temporary removal increases the uncertainty concerning the overall effect of trees on particulate air pollution.…”

Section: Introductionmentioning

confidence: 99%

“…This variability is likely due to a number of confounding factors. The complex and porous structure of trees and bushes can modify near-road concentrations via pollutant capture or through altering air flow, which can result in either diminished dispersion through the reduction of wind speed and boundary layer heights (Nowak et al, 2000;Wania et al, 2012) or in enhanced dispersion due to increased air turbulence and mixing. Recirculation zones have also been observed immediately downwind of forested areas with a flow structure consistent with an intermittent recirculation pattern (Detto et al, 2008;Frank and Ruck, 2008).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Field assessment of the effects of roadside vegetation on near-road black carbon and particulate matter

Brantley

Hagler

Deshmukh

et al. 2014

Science of The Total Environment

156

View full text Add to dashboard Cite

• Vegetation barriers altered near-road black carbon concentrations.• Vegetation reduced downwind black carbon concentrations by approximately 12%.• Downwind fine and coarse particle concentration were unaffected by vegetation.• Black carbon gradients more gradual behind vegetation compared to a clearing. a b s t r a c t a r t i c l e i n f o One proposed method for reducing exposure to mobile source air pollution is the construction or preservation of vegetation barriers between major roads and nearby populations. This study combined stationary and mobile monitoring approaches to determine the effects of an existing, mixed-species tree stand on near-road black carbon (BC) and particulate matter concentrations. Results indicated that wind direction and time of day significantly affected pollutant concentrations behind the tree stand. Continuous sampling revealed reductions in BC behind the barrier, relative to a clearing, during downwind (12.4% lower) and parallel (7.8% lower) wind conditions, with maximum reductions of 22% during the late afternoon when winds were from the road. Particle counts in the fine and coarse particle size range (0.5-10 μm aerodynamic diameter) did not show change. Mobile sampling revealed BC concentration attenuation, a result of the natural dilution and mixing that occur with transport from the road, was more gradual behind the vegetation barrier than in unobstructed areas. These findings suggest that a mature tree stand can modestly improve traffic-related air pollution in areas located adjacent to the road; however, the configuration of the tree stand can influence the likelihood and extent of pollutant reductions.Published by Elsevier B.V.

show abstract

“…In urban atmospheric environmental quality is a city environmental indicators and important health indicators for direct response people's quality of life. Just because the air pollution has the important effect to the humanity living environment, many efforts have been done to reveal the regional distribution of air pollutants and their variations at different time scales [1][2][3][4][5][6][7]. In this paper, monitoring data of the different station constructed in Baoji of China are used to analyze the trends of atmospheric quality and to discuss its influence factors.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Atmospheric Environmental Quality in Baoji City

Yin-ge¹,

Shi²,

Zhang³

2017

Proceedings of the 2nd 2016 International Conference on Sustainable Development (ICSD 2016)

View full text Add to dashboard Cite

Abstract-Using comprehensive pollution index and Daniel trend test rank coefficient methods and monitoring data from 2007 to 2013, the characters of the main air pollutants were analyzed and trend of atmospheric environmental quality was evaluated. Influence factors on air quality were discussed. Results show that air quality is poor in Baoji , the order of the index of main atmospheric pollutants is PM10 > S0 2 > N0 2 and N0 2 and SO 2 are on the rise, while the rank correlation coefficient of PM10 is the highest and decline significantly. The climate elements have great influences on diffusion of atmospheric pollutants and coal combustion and vehicle exhaust emissions are still the main pollution sources. This study provides a basis for environmental management.

show abstract

A modeling study of the impact of urban trees on ozone

Cited by 224 publications

References 21 publications

Tree and forest effects on air quality and human health in the United States

Tree and forest effects on air quality and human health in the United States

Field assessment of the effects of roadside vegetation on near-road black carbon and particulate matter

Assessment of Atmospheric Environmental Quality in Baoji City

Contact Info

Product

Resources

About