Green walls for mitigating urban particulate matter pollution—A review

Ysebaert, Tess; Koch, Kyra; Samson, Roeland; Denys, Siegfried

doi:10.1016/j.ufug.2021.127014

Cited by 79 publications

(60 citation statements)

References 73 publications

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Section: Green Wallsmentioning

confidence: 99%

“…Further studies in green infrastructure also discussed the effects of green walls, which include all forms of vegetated wall surfaces [11,16]. Mostly, the benefits of a green wall pertain to the deposition effect it offers for pollutant reduction [17]. However, green walls are also feasible in areas that have limitations on planting trees and hedges inside canyons, due to subsurface infrastructure, poor soil conditions, lack of sunlight, etc.…”

Section: Green Wallsmentioning

confidence: 99%

See 1 more Smart Citation

Urban Obstacles Influence on Street Canyon Ventilation: A Brief Review

Buccolieri

Carlo

Rivas

et al. 2021

The 4th International Electronic Conference on Atmospheric Sciences

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Many research articles explore new designs and how to arrange barriers/obstacles to improve roadside air quality and ventilation within the urban street canyon. These obstacles are generally categorized into porous, non-porous and mixed type. Porous barriers include vegetated shrubs and trees; non-porous barriers include parked cars, low boundary walls, etc., while mixed barriers combine both porous and non-porous barriers. Moreover, new developments can benefit from added design flexibility using lift-up building design and building porosity as a promising way of improving ventilation. This short paper reviews the different research studies conducted on obstacles/barriers in an urban canyon which helps improve air quality and also highlights potential future research.

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Section: Green Wallsmentioning

confidence: 99%

Section: Green Wallsmentioning

confidence: 99%

Urban Obstacles Influence on Street Canyon Ventilation: A Brief Review

Buccolieri

Carlo

Rivas

et al. 2021

The 4th International Electronic Conference on Atmospheric Sciences

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“…Hence, it is crucial to study and address the changes occurring in the atmospheric chemical environment of urban areas, and to find optimal solutions for pollution prevention and risk mitigation conditioned by the PM-linked PTE contents. In recent years, several studies [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ] tested different tree species and other urban greenery for their capacity in PM removal, and found that trees can serve as efficient nature-based solutions (NBS) for air quality management in urban areas. However, the leaf macro- and micro-structure plays a pivotal role in PM capture [ 10 , 13 ], resulting in dramatically different efficiencies among tree species.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, several studies [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ] tested different tree species and other urban greenery for their capacity in PM removal, and found that trees can serve as efficient nature-based solutions (NBS) for air quality management in urban areas. However, the leaf macro- and micro-structure plays a pivotal role in PM capture [ 10 , 13 ], resulting in dramatically different efficiencies among tree species. Muhammad et al, (2019) [ 19 ] found that among the 96 studied species, the most effective species for PM immobilization are Buddleja davidii , Viburnum lantana , and Sorbus intermedia , whereas the least effective were Populus alba , Robinia pseudoacacia , and Abies fraseri .…”

Section: Introductionmentioning

confidence: 99%

“…Dadea et al, (2017) [ 8 ] found that, from the perspective of heavy metal bioindication and phytoremediation, the most suitable among the nine studied species were fast-growing Betula pendula and Robinia pseudoacacia . However, it should be mentioned that several factors may affect the results presented in the literature, ranging from rainfall [ 13 ] to the analytical techniques used [ 20 , 21 ]. In addition, the studied tree species reported in the previous literature strongly depend on the geographical regions under investigation.…”

Section: Introductionmentioning

confidence: 99%

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Revealing Soil and Tree Leaves Deposited Particulate Matter PTE Relationship and Potential Sources in Urban Environment

Tepanosyan

Baldacchini

Sahakyan

2021

IJERPH

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Trees play a pivotal role in improving urban environmental quality and provide several ecosystem services including the removal of pollutants from the air, such as particular matter (PM) and potentially toxic elements (PTE). Therefore, understanding the tree PM and PTE capturing potential, also in connection with plant species, is of great concern, especially in urban areas. This study aims to reveal the link between the elemental composition of PM deposited on tree leaves and soils PTE contents, as well as to rank the PM capturing efficiency of 10 different tree species growing under the impact of urban environments. This also allowed us to test the efficiency of PM deposited on tree leaves as a PTE biomonitoring and pollution source identification tool, in the two biggest urban areas of Armenia. Indeed, high contents of PTE are detected in both soil- and leaf-deposited PM from sites characterized by the presence of localized and active pollution sources (i.e., industrial unites, high traffic, etc.), which are identified by specific tracers (such as Mo, Cu, Zn, Pb, and Cd). Among the studied tree species, the highest PM amount per unit leaf area is observed for Platanus orientalis, but elm species are also identified as promising canditates to be considered for their PM removing potential, and need to be included in future more details studies.

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Assessment of air quality benefits of vegetation in an urban‐industrial region of India by integrating air monitoring with i‐Tree Eco model

Vashist,

Kumar,

Singh

2024

CLEAN Soil Air Water

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In the last few years, urban trees have emerged as an effective nature‐based solution to mitigate increasing air pollutant levels due to urbanization and industrialization. This study aims to assess the synergistic effect of urban trees on improving air quality by combining real‐time PM2.5 monitoring with the i‐Tree Eco model. The monitoring was conducted during rush hours with high traffic volume and during non‐rush hours, in both the tree alley and a non‐tree road section within the industrial areas of the north‐west region of the National Capital Territory of Delhi, India. The i‐Tree Eco model was run using the diameter at breast height values of tree species present in the study area, and the PM2.5 reduction ability of the trees was quantified. The results from both approaches indicated that urban trees can significantly reduce the traffic‐fed PM2.5 concentrations. Therefore, it is suggested that tree plantations be integrated into air pollution management strategies in urbanized regions with high traffic volumes. Although this study explores the initial link between trees and air quality in Delhi, further research incorporating local wind speed and direction measurements would provide a more comprehensive understanding of how trees influence air quality in any highly polluted urban setting.

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Green walls for mitigating urban particulate matter pollution—A review

Cited by 79 publications

References 73 publications

Urban Obstacles Influence on Street Canyon Ventilation: A Brief Review

Urban Obstacles Influence on Street Canyon Ventilation: A Brief Review

Revealing Soil and Tree Leaves Deposited Particulate Matter PTE Relationship and Potential Sources in Urban Environment

Assessment of air quality benefits of vegetation in an urban‐industrial region of India by integrating air monitoring with i‐Tree Eco model

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