The effects of vegetation on reducing traffic noise from a city ring road

Samara, Theano; Tsitsoni, Thekla

doi:10.3397/1.3528970

Cited by 44 publications

(25 citation statements)

References 9 publications

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“…Aylor [3] confirmed that corn crop reduced noise propagation by 5 to 6 dB. This is similar to that of Samara et al [4] who concluded that a Pinus brutia belt of trees reduced traffic noise by 6 dB. Bernatzky [5] marked that greater noise attenuation of 12 dB was offered by parks.…”

Section: Introductionsupporting

confidence: 77%

Reducing Indoor Noise Levels Using People’s Perception on Greenery

Mediastika¹,

Binarti²

2013

Scientific Journal of Riga Technical University. Environmental and Climate Technologies

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Employees working in cubicles of open-plan offices in Indonesia were studied in regard to their perception on the ability of indoor greenery to reduce noise levels. Sansevieria trifasciata and Scindapsus sp were used. Each was placed in the cubicle and noise levels were measured without plants, with Sansevieria, and with Scindapsus in place. The meters showed very insignificant difference. However, responses to surveys indicated a perception of lower noise in the presence of greenery. This seemed to be supported by prior knowledge and preconception and may be useful in creating a "quieter" indoor environment. Abstract -Employees working in cubicles of open-plan offices in Indonesia were studied in regard to their perception on the ability of indoor greenery to reduce noise levels. Sansevieria trifasciata and Scindapsus sp were used. Each was placed in the cubicle and noise levels were measured without plants, with Sansevieria, and with Scindapsus in place. The meters showed very insignificant difference. However, responses to surveys indicated a perception of lower noise in the presence of greenery. This seemed to be supported by prior knowledge and preconception and may be useful in creating a "quieter" indoor environment. Keywords

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Section: Introductionsupporting

confidence: 77%

Reducing Indoor Noise Levels Using People’s Perception on Greenery

Mediastika¹,

Binarti²

2013

Scientific Journal of Riga Technical University. Environmental and Climate Technologies

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“…Exposure to natural environments appears to stimulate healing and reduce stress [ 1 , 2 , 3 , 4 ]. Additional research in the U.S. and Europe indicate that urban greenspaces also provide opportunities for physical activity and social interaction while vegetation reduces exposure to noise [ 5 , 6 ], air pollution [ 7 , 8 , 9 ], and extreme heat [ 10 , 11 ]. Recent studies and reviews have found evidence that neighborhood greenness is associated with higher levels of physical activity, better mental health outcomes, less cardiovascular disease, increased birthweight, and decreased mortality [ 12 , 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Race, Ethnicity, Income Concentration and 10-Year Change in Urban Greenness in the United States

Casey

James

Cushing

et al. 2017

IJERPH

105

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Background: Cross-sectional studies suggest urban greenness is unequally distributed by neighborhood demographics. However, the extent to which inequalities in greenness have changed over time remains unknown. Methods: We estimated 2001 and 2011 greenness using Moderate-resolution Imaging Spectroradiometer (MODIS) satellite-derived normalized difference vegetative index (NDVI) in 59,483 urban census tracts in the contiguous U.S. We fit spatial error models to estimate the association between baseline census tract demographic composition in 2000 and (1) 2001 greenness and (2) change in greenness between 2001 and 2011. Results: In models adjusted for population density, climatic factors, housing tenure, and Index of Concentration at the Extremes for income (ICE), an SD increase in percent White residents (a 30% increase) in 2000 was associated with 0.021 (95% CI: 0.018, 0.023) higher 2001 NDVI. We observed a stepwise reduction in 2001 NDVI with increased concentration of poverty. Tracts with a higher proportion of Hispanic residents in 2000 lost a small, statistically significant amount of greenness between 2001 and 2011 while tracts with higher proportions of Whites experienced a small, statistically significant increase in greenness over the same period. Conclusions: Census tracts with a higher proportion of racial/ethnic minorities, compared to a higher proportion of White residents, had less greenness in 2001 and lost more greenness between 2001 and 2011. Policies are needed to increase greenness, a health-promoting neighborhood asset, in disadvantaged communities.

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“…Urban trees provide several environmental amenities (Givoni 1991), including shade on hot days (Scott et al 1999), reductions in wastewater loads on treatment facilities (Keim et al 2006), and reduced air pollution (Hwang et al 2011; Nowak 1994) and noise pollution (Samara and Tsitsoni 2011) from vehicular traffic. Research also suggests that urban trees are associated with reduced all-cause mortality after adjustment for neighborhood deprivation (Mitchell et al 2011), and green spaces are associated with many positive health outcomes (Lee and Maheswaran 2010), including improved pregnancy outcomes (Dadvand et al 2012).…”

mentioning

confidence: 99%

The Racial/Ethnic Distribution of Heat Risk–Related Land Cover in Relation to Residential Segregation

Jesdale¹,

Morello‐Frosch

Cushing

2013

Environ Health Perspect

215

120

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Objective: We examined the distribution of heat risk–related land cover (HRRLC) characteristics across racial/ethnic groups and degrees of residential segregation.Methods: Block group–level tree canopy and impervious surface estimates were derived from the 2001 National Land Cover Dataset for densely populated urban areas of the United States and Puerto Rico, and linked to demographic characteristics from the 2000 Census. Racial/ethnic groups in a given block group were considered to live in HRRLC if at least half their population experienced the absence of tree canopy and at least half of the ground was covered by impervious surface (roofs, driveways, sidewalks, roads). Residential segregation was characterized for metropolitan areas in the United States and Puerto Rico using the multigroup dissimilarity index.Results: After adjustment for ecoregion and precipitation, holding segregation level constant, non-Hispanic blacks were 52% more likely (95% CI: 37%, 69%), non-Hispanic Asians 32% more likely (95% CI: 18%, 47%), and Hispanics 21% more likely (95% CI: 8%, 35%) to live in HRRLC conditions compared with non-Hispanic whites. Within each racial/ethnic group, HRRLC conditions increased with increasing degrees of metropolitan area-level segregation. Further adjustment for home ownership and poverty did not substantially alter these results, but adjustment for population density and metropolitan area population attenuated the segregation effects, suggesting a mediating or confounding role.Conclusions: Land cover was associated with segregation within each racial/ethnic group, which may be explained partly by the concentration of racial/ethnic minorities into densely populated neighborhoods within larger, more segregated cities. In anticipation of greater frequency and duration of extreme heat events, climate change adaptation strategies, such as planting trees in urban areas, should explicitly incorporate an environmental justice framework that addresses racial/ethnic disparities in HRRLC.

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The effects of vegetation on reducing traffic noise from a city ring road

Cited by 44 publications

References 9 publications

Reducing Indoor Noise Levels Using People’s Perception on Greenery

Reducing Indoor Noise Levels Using People’s Perception on Greenery

Race, Ethnicity, Income Concentration and 10-Year Change in Urban Greenness in the United States

The Racial/Ethnic Distribution of Heat Risk–Related Land Cover in Relation to Residential Segregation

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