Impact of Different Combinations of Green Infrastructure Elements on Traffic-Related Pollutant Concentrations in Urban Areas

被引：14

作者：

Santiago, Jose-Luis ^{[1
]}

Rivas, Esther ^{[1
]}

Sanchez, Beatriz ^{[2
]}

Buccolieri, Riccardo ^{[3
]}

Esposito, Antonio ^{[3
]}

Martilli, Alberto ^{[1
]}

Vivanco, Marta G. ^{[1
]}

Martin, Fernando ^{[1
]}

机构：

[1] CIEMAT, Dept Environm, Atmospher Modelling Unit, Madrid 28040, Spain

[2] Natl Univ Singapore, Dept Geog, Singapore 119260, Singapore

[3] Univ Salento, Lab Micrometeorol, Dipartimento Sci & Tecnol Biol Ambientali, I-73100 Lecce, Italy

来源：

FORESTS | 2022年 / 13卷 / 08期

关键词：

air pollution; computational fluid dynamics (CFD) model; green infrastructure (GI); street trees; hedgerows; green walls; green roofs; traffic-related pollution; urban environment; ROADSIDE VEGETATION BARRIERS; LOW-EMISSION ZONES; AIR-QUALITY; STREET CANYON; WIND-TUNNEL; CFD SIMULATION; PART I; DISPERSION; TREES; FLOW;

D O I：

10.3390/f13081195

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

Urban air quality is a major problem for human health and green infrastructure (GI) is one of the potential mitigation measures used. However, the optimum GI design is still unclear. The purpose of this study is to provide some recommendation that could help in the design of the GI (mainly, the selection of locations and characteristics of trees and hedgerows). Aerodynamic and deposition effects of each vegetation element of different GI scenarios are investigated. Computational fluid dynamics (CFD) simulations of a wide set of GI scenarios in an idealized three-dimensional urban environment are performed. In conclusion, it was found that trees in the middle of the avenue (median strip) reduce street ventilation, and traffic-related pollutant concentrations increase, in particular for streets parallel to the wind. Trees in the sidewalks act as a barrier for pollutants emitted outside, specifically for a 45 degrees wind direction. Regarding hedgerows, the most important effect on air quality is deposition and the effects of green walls and green roofs are limited to their proximity to the building surfaces.

引用

页数：19

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