Morphological structure of leaves and dust-retaining capability of common street trees in Guangzhou Municipality

Lu, 刘璐 Liu; Dongsheng, 管东生 Guan; Yongqin, 陈永勤 Chen

doi:10.5846/stxb201201100054

Cited by 29 publications

(12 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There were at least 28 days with no precipitation before sampling. Liu et al (2013) indicated that leaves attained the maximum dust-retaining capabilities [19]. Sampling dates were selected during times of no precipitation and wind.…”

Section: Species Sampledmentioning

confidence: 99%

“…Conifers have species-specific features such as leaf morphology, leaf type, and leaf area index that act as the main structures and are considered more effective at capturing PM [16]. Other studies have investigated PM deposition on vegetation in wind tunnels to investigate the deposition velocity on different tree species [18][19]. In conclusion, previous studies on particles captured by plants have mostly focused on particle mass and size distribution [20][21][22][23] to evaluate capture capacities of species.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Spatial-Temporal Variability and Dust-Capture Capability of 8 Plants in Urban China

Zha¹,

Shi²,

Tang³

et al. 2018

Pol. J. Environ. Stud.

View full text Add to dashboard Cite

Urban plants have been proven to mitigate ambient particulate matter (PM), which can benefit urban planners in their attempts to control urban air pollution. In this study, PM depositions on the leaves of 8 tree species were quantitatively analysed in 7 functional areas of the city of Nanjing, China, over the course of one year. The results demonstrated that leaf PM included different particle size fractions (PM 10 and PM 2.5 ), and differed among seasons and species. The highest amounts of total PM, PM 10 , and PM 2.5 were found in the industrial area, and the mean values were 80.24 μg/cm 2 , 52.14 μg/cm 2 , and 15.51 μg/cm 2 , respectively, and the highest accumulation of total PM (60.65 μg/cm 2 ), PM 10 (37.29 μg/cm 2 ), and PM 2.5 (11.23 μg/cm 2 ) occurred in winter. Significant differences were found between the tree species tested. Cedrus deodara exhibited high amounts of the total PM, PM 10 , and PM 2.5 accumulations. This study examined the mass and quantity distribution of PM among tree species, and identified the particles combined with a scanning electron microscope (SEM). In terms of particle mass, 48% of the identified particles had a diameter of 10 μm, and only 18.3% of them had a diameter of 2.5 μm. In terms of particle number, the results indicated that 73% of them had a diameter of 2.5 μm, and only 5.5% of them had a diameter of 10 μm. To test the relationship between leaf traits and PM 2.5 accumulation, results showed that stomata size, density, and hair were significantly related to the PM 2.5 capture quantity. As far as we know, this is the first paper to present the mass and quantity distribution of the PM of different tree species in Nanjing. The results not only give comprehensive insights into the dust-retaining capability of tree species but also offer a selection of species for urban green areas where the goal is to mitigate urban airborne PM.

show abstract

Section: Species Sampledmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spatial-Temporal Variability and Dust-Capture Capability of 8 Plants in Urban China

Zha¹,

Shi²,

Tang³

et al. 2018

Pol. J. Environ. Stud.

View full text Add to dashboard Cite

show abstract

“…Hwang et al [4] conducted a study that shows that different tree species with different morphological characteristics (such as leaf surface characteristics, canopy structure, leaf density, and leaf angle) have different dust retention potential. Because the leaf is the main agent of ambient particle entrapment by plants [37], Chai et al [38] tested leaves and found that roughness and density of villi as adhesion points affect particle detention. Neinhuis [39] proved by research that particle detention ability of easily-wet leaves is strong, while those with special surface structures and hydrophobic wax are not readily wetted and also have poor particle detention ability.…”

Section: Particle Absorption and Species Variationmentioning

confidence: 99%

Pollution Remediation by Urban Forests: PM2.5 Reduction in Beijing, China

Chen¹,

Lu²,

Zhao³

et al. 2016

Pol. J. Environ. Stud.

View full text Add to dashboard Cite

show abstract

“…The capturing capacity for PM 2.5 by the leaves from broad-leaved tree species slightly varied over time, which may be attributed to the morphological structure of the leaf surface [21,22]. Moreover, we observed a significant change in leaf PM accumulation for the six sampled species throughout the growing season [23][24][25]. Throughout the study, we found that the leaves from needle-leaved tree species were perennial, the surface structure of the leaves could change the capturing capacity, and that capturing capacity was less affected by the roughness of the leaves (r = 0.42, 0.41).…”

Section: Discussionmentioning

confidence: 54%

“…Moreover, we observed a significant change in leaf PM accumulation for the six sampled species throughout the growing season. [23][24][25]. Vertical bars represent + standard error; n = 3.…”

Section: Discussionmentioning

confidence: 99%

Relationship between Leaf Surface Characteristics and Particle Capturing Capacities of Different Tree Species in Beijing

Zhang

Wang

Niu

2017

Forests

View full text Add to dashboard Cite

Leaf surface is a multifunctional interface between a plant and its environment, which affects both ecological and biological processes. Leaf surface topography directly affects microhabitat availability and ability for deposition. In this study, atomic force microscopy (AFM) and the resuspended particulate matter method were applied to evaluate the adsorptive capacity of the leaf surface. Patterns of particulate-capturing capacities in different tree species and the effect of leaf surface features on these capacities were explored. Results indicated the following: (1) more total suspended particles (TSP) per unit leaf area were captured by coniferous tree species than by broad-leaved tree species in a particular order-i.e., Pinus tabuliformis > Pinus bungeana > Salix matsudana > Acer truncatum > Ginkgo biloba > Populus tomentosa; (2) Significant seasonal variation in particulate-capturing capacities were determined. During the observation period, the broad-leaved tree species capturing TSP and coarse particulate matter (PM 10 ) clearly exhibited a ∩-shape pattern-that is, increasing initially and later on decreasing; meanwhile, the ∩-shape pattern was not clearly shown in P. tabuliformis and P. bungeana. However, no obvious patterns in the absorption of fine particulate matter (PM 2.5 ) were found in the tested tree species; (3) The leaf surface topography, as observed by AFM and scanning electron microscopy, revealed that the broad-leaved tree exhibits a good correlation between micro-roughness of leaf surfaces and density of particles settling on leaf surfaces over time. However, the main factors affecting the adsorptive capacities of the leaves in coniferous trees are the number of stomata as well as the amount of epicuticular wax and the properties of the cuticle in different seasons.

show abstract

Morphological structure of leaves and dust-retaining capability of common street trees in Guangzhou Municipality

Cited by 29 publications

References 1 publication

Spatial-Temporal Variability and Dust-Capture Capability of 8 Plants in Urban China

Spatial-Temporal Variability and Dust-Capture Capability of 8 Plants in Urban China

Pollution Remediation by Urban Forests: PM2.5 Reduction in Beijing, China

Relationship between Leaf Surface Characteristics and Particle Capturing Capacities of Different Tree Species in Beijing

Contact Info

Product

Resources

About