The morphological structure of leaves and the dust-retaining capability of afforested plants in urban Guangzhou, South China

Liu, Lu; Guan, Dongsheng; Peart, M. R.

doi:10.1007/s11356-012-0876-2

Cited by 111 publications

(54 citation statements)

References 13 publications

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“…The highest values of PM, PM 10 , and PM 2.5 were observed in IA, which greatly exceed that held on leaf surfaces in the other functional area (P<0.05) and is attributed to the incomplete combustion of petroleum and coal release from industrial areas that might enhance the amount of PM. The highest amount of PM in IA observations was in line with the previous studies in Huizhou, Guangdong [28], and Guangzhou [29]. In addition, CA and TA could release different sizes of PM from vehicle emissions, which were then deposited on the leaf surfaces and led to more PM.…”

Section: Spatial Variation Characteristics Of Pm On Leaf Surfacessupporting

confidence: 88%

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

Zha¹,

Shi²,

Tang³

et al. 2018

Pol. J. Environ. Stud.

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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.

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Section: Spatial Variation Characteristics Of Pm On Leaf Surfacessupporting

confidence: 88%

“…Several studies have indicated that urban vegetation has a positive influence on air purity and can significantly affect air quality [8][9][10]. Previous works qualitatively evaluated the ability of different species to accumulate and retain PM [11][12][13].…”

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.

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“…According to the pollution context, the foliar transfer of metals can be neglected, or in contrast appears as the main pathway of pollution, particularly when ultra-fine particles interact with plant leaves [92,93]. The plant canopy serves as an efficient filter of atmospheric heavy metals emissions [94]. Several recent and old studies reported that plant canopy can efficiently adsorb and reduce PM ratio in the atmosphere by capturing the airborne PM on their foliar parts [95][96][97].…”

Section: Foliar Deposition and Uptake Of Heavy Metalsmentioning

confidence: 99%

Foliar heavy metal uptake, toxicity and detoxification in plants: A comparison of foliar and root metal uptake

Shahid

Dumat

Khalid

et al. 2017

Journal of Hazardous Materials

904

297

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Anthropologic activities have transformed global biogeochemical cycling of heavy metals by emitting considerable quantities of these metals into the atmosphere from diverse sources. In spite of substantial and progressive developments in industrial processes and techniques to reduce environmental emissions, atmospheric contamination by toxic heavy metals and associated ecological and health risks are still newsworthy. Atmospheric heavy metals may be absorbed via foliar organs of plants after wet or dry deposition of atmospheric fallouts on plant canopy. Unlike root metal transfer, which has been largely studied, little is known about heavy metal uptake by plant leaves from the atmosphere. To the best of our understanding, significant research gaps exist regarding foliar heavy metal uptake. This is the first review regarding biogeochemical behaviour of heavy metals in atmosphere-plant system. The review summarizes the mechanisms involved in foliar heavy metal uptake, transfer, compartmentation, toxicity and in plant detoxification. We have described the biological and environmental factors that affect foliar uptake of heavy metals and compared the biogeochemical behaviour (uptake, translocation, compartmentation, toxicity and detoxification) of heavy metals for root and foliar uptake. The possible health risks associated with the consumption of heavy metal-laced food are also discussed.

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“…leaves with waxy substance or rough surfaces had high PM level compared to leaves with a smooth surface [54]. It is worth noting that, referring to Saebø's and Liu's findings, the epicuticular wax played a negative impact on capturing PM [65,66]. Anyway, the results may contribute to urban greening by optimizing living walls [54,67].…”

Section: Mechanisms and Background Techniquesmentioning

confidence: 98%

Effects of Particle Matters on Plant: A Review

LiJuan¹,

Yu²,

MeiChen³

et al. 2019

Phyton

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The particle matter, particularly the suspended particle matter (PM ≤ 2.5) in the air is not only a risk factor for human health, but also affects the survival and physiological features of plants. Plants show advantages in the adsorption of particle matter, while the factors, such as the leaf shape, leaf distribution density and leaf surface microstructure, such as grooves, folds, stomata, flocculent projections, micro-roughness, long fuzz, short pubescence, wax and secretory products, appeared to play an important role determing their absorption capacity. In this paper, the research progress on the capture or adsorption of atmospheric particles was summarized, and the forest vegetation and woody plants were discuessed. In addition, special attentions were paid to the effect of haze-fog weather on greenhouse plant, the different responses of plant leaves to dust particles and suspended particles, as well as the effect of suspended particles on morphological change of plants. In the future, research should focus on the mechanism of the influence of particulate matter on plants.More advanced effective and convenient research methods like spectral detection method also need to be developed. This paper may provide reference for future studies on plants' response to haze and particle matter.

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The morphological structure of leaves and the dust-retaining capability of afforested plants in urban Guangzhou, South China

Cited by 111 publications

References 13 publications

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

Foliar heavy metal uptake, toxicity and detoxification in plants: A comparison of foliar and root metal uptake

Effects of Particle Matters on Plant: A Review

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