Atmospheric net particle accumulation on 96 plant species with contrasting morphological and anatomical leaf characteristics in a common garden experiment

Muhammad, Samira; Wuyts, Karen; Samson, Roeland

doi:10.1016/j.atmosenv.2019.01.015

Cited by 102 publications

(96 citation statements)

References 50 publications

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“…Regarding the above results by Weerakkody et al 91 and Zhang et al 111 , a link between leaf grooves and/or trichomes and effective particle capture is well-supported by the literature 36,88,90,105,113,117,118 . Chen et al 105 , for example, found a clear correlation between PM 2.5 accumulation and grooves and trichomes in leaves.…”

Section: Leaf Surface Featuresmentioning

confidence: 56%

“…Disagreement between these and other findings highlights that the single most influential surface feature across leaf types (broadleaf, needle-like, scale-like, etc.) for individual pollutant types is currently unclear and an area for further research 118 . However, it may be generalised that rough leaf surfaces (including grooves, ridges and trichomes) are more beneficial than smooth surfaces for particle deposition, that epicuticular wax is beneficial (particularly for deposition to conifers 111,112 ) and that stomatal traits play a significant role that warrants further investigation.…”

Section: Leaf Surface Featuresmentioning

confidence: 99%

See 1 more Smart Citation

Designing vegetation barriers for urban air pollution abatement: a practical review for appropriate plant species selection

2020

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Vegetation can form a barrier between traffic emissions and adjacent areas, but the optimal configuration and plant composition of such green infrastructure (GI) are currently unclear. We examined the literature on aspects of GI that influence ambient air quality, with a particular focus on vegetation barriers in open-road environments. Findings were critically evaluated in order to identify principles for effective barrier design, and recommendations regarding plant selection were established with reference to relevant spatial scales. As an initial investigation into viable species for UK urban GI, we compiled data on 12 influential traits for 61 tree species, and created a supplementary plant selection framework. We found that if the scale of the intervention, the context and conditions of the site and the target air pollutant type are appreciated, the selection of plants that exhibit certain biophysical traits can enhance air pollution mitigation. For super-micrometre particles, advantageous leaf micromorphological traits include the presence of trichomes and ridges or grooves. Stomatal characteristics are more significant for sub-micrometre particle and gaseous pollutant uptake, although we found a comparative dearth of studies into such pollutants. Generally advantageous macromorphological traits include small leaf size and high leaf complexity, but optimal vegetation height, form and density depend on planting configuration with respect to the immediate physical environment. Biogenic volatile organic compound and pollen emissions can be minimised by appropriate species selection, although their significance varies with scale and context. While this review assembled evidence-based recommendations for practitioners, several important areas for future research were identified.

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Section: Leaf Surface Featuresmentioning

confidence: 56%

Section: Leaf Surface Featuresmentioning

confidence: 99%

Designing vegetation barriers for urban air pollution abatement: a practical review for appropriate plant species selection

2020

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“…In view of the deficiencies mentioned above, subsequently, (1) sample collection should be increased in terms of vegetation types, batches and duration to enhance the accuracy and reliability of statistical analysis of samples [12]. (2) In addition, in the long run, once trees are planted, they are generally not replanted.…”

Section: Prospectmentioning

confidence: 99%

“…One type of research focuses on physical processes, exploring the adsorption process and effect of vegetation on PM [7]. This type of research includes the net particle accumulation of different tree species [12,13], effects of leaf surface structures or surface morphological features on PM adsorption [5,14], main influencing factors of PM retention of different trees in different wind environments [9], PM removal processes of leaves of different tree species under different rainfall patterns [15], etc. Another type of research simulates and calculates the amount of PM removal within a certain area and the forest's environmental health value [16].…”

Section: Introductionmentioning

confidence: 99%

Simulation of the Impact of Urban Forest Scale on PM2.5 and PM10 based on System Dynamics

Zhou¹,

Liu²,

Xia³

2019

Sustainability

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In the context of ecological civil construction in China, afforestation is highly valued. Planting trees can improve air quality in China's large cities. However, there is a lack of scientific analysis quantifying the impact urban forest scale has on the air quality, and what scale is advisable. The problem still exists of subjective decision-making in afforestation. Similar studies have rarely analyzed the long-term effect research of urban forests on air improvement. Using as an example, the city of Wuhan, this paper identifies the regularity between particulate matter concentration and adsorption of sample leaves, and establishes a system dynamics model of "economy, energy and atmospheric environment.” By combining this regularity with the model, the long-term impact of forest scale on particulate matter and atmospheric environment was simulated. The results show that if the forest coverage rate reaches at least 30%, the annual average concentrations of inhalable particulate matter (PM10) and fine particulate matter (PM2.5) can both reach the Grade I limit of national Ambient Air Quality Standard by 2050. The current forest cover is 22.9% of the administrative area. Increasing the forest cover by 600 km2 would increase this percentage to 30% of the total area. In the long run (by the year 2050), however, we showed that this increase would only reduce the annual concentration of PM2.5 and PM10 by 1–2%. Therefore, about 90% of the concentration reduction would still rely on the traditional emission reduction measures. More other ecological functions of forests should be considered in afforestation plan.

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“…In view of the limitations mentioned above, subsequently, sample collection can be increased in terms of vegetation types, batch number, and duration to enhance the accuracy and reliability of the statistical analysis of samples [54]. In addition, tree planting should also consider the multiple functional elements of their ecological services.…”

Section: Limitations and Prospectsmentioning

confidence: 99%

GIS-Based Urban Afforestation Spatial Patterns and a Strategy for PM2.5 Removal

Zhou

Liu

Zhou

et al. 2019

Forests

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Within the scope of ecological development planning in China, afforestation is highly valued. However, the scientific planning of afforestation still has inadequacies. There are few studies on the spatial distribution of urban forests targeted at air quality improvement. Here, we implemented a virtual experiment to evaluate whether different tree planting distribution plans with the same afforestation scale would have a significant effect on fine particulate matter (PM2.5) removal. As a case study of Wuhan, this paper identified the statistical regularity between PM2.5 concentration and adsorption of representative trees through field sampling and measurement, simulated the influence of different afforestation plans on PM2.5 concentration based on Geographic Information System (GIS), judged the significance of the difference of the plans, and proposed a greening distribution strategy. The results show that different forest layouts had no significant impact on PM2.5 in the administrative region, and the concentration reduction rate was only 1%–2%. Targeted planting of trees in heavily polluted areas in the city center would have achieved better air quality improvement, with a reduction rate of 3%–5%. In Wuhan construction areas, trees should be planted to increase the forest coverage rate to 30%. The edge of the urban metropolitan development zone needs to be strengthened with trees to form a forest belt 10 km–20 km wide, with a forest coverage rate of at least 60%. In general, the capability of trees to reduce PM2.5 concentration is weak. The fundamental way to improve air quality is to reduce emissions; planting trees is only an auxiliary measure. More ecological forest functions should be considered in city-wide afforestation distribution.

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Atmospheric net particle accumulation on 96 plant species with contrasting morphological and anatomical leaf characteristics in a common garden experiment

Cited by 102 publications

References 50 publications

Designing vegetation barriers for urban air pollution abatement: a practical review for appropriate plant species selection

Designing vegetation barriers for urban air pollution abatement: a practical review for appropriate plant species selection

Simulation of the Impact of Urban Forest Scale on PM2.5 and PM10 based on System Dynamics

GIS-Based Urban Afforestation Spatial Patterns and a Strategy for PM2.5 Removal

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