Spatial-temporal variability and dust-capture capability of 8 plants in urban China

• Autorzy: Zha Y. , Shi Y. , Tang J. , Liu X. , Feng C. , Zhang Y.
• Języki publikacji: EN

Abstrakty

EN

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 (PM₁₀ and PM₂.₅), and differed among seasons and species. The highest amounts of total PM, PM₁₀, and PM₂.₅ were found in the industrial area, and the mean values were 80.24 μg/cm², 52.14 μg/cm², and 15.51 μg/cm², respectively, and the highest accumulation of total PM (60.65 μg/cm²), PM₁₀ (37.29 μg/cm²), and PM₂.₅ (11.23 μg/cm²) occurred in winter. Significant differences were found between the tree species tested. Cedrus deodara exhibited high amounts of the total PM, PM₁₀, and PM₂.₅ 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 PM₂.₅ accumulation, results showed that stomata size, density, and hair were significantly related to the PM₂.₅ 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.

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2019
• Tom: 28
• Numer: 1
• Opis fizyczny: p.453-462,fig.,ref.

Twórcy

autor

Zha Y.

• Co-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Ecological Engineering, Nanjing Forestry University, Nanjing, China

autor

Shi Y.

• Co-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Ecological Engineering, Nanjing Forestry University, Nanjing, China

autor

Tang J.

• School of Resources and Environment, Anhui Agricultural University, Anhui, China

autor

Liu X.

• School of Resources and Environment, Anhui Agricultural University, Anhui, China

autor

Feng C.

• Co-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Ecological Engineering, Nanjing Forestry University, Nanjing, China

autor

Zhang Y.

• Co-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Ecological Engineering, Nanjing Forestry University, Nanjing, China

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Identyfikatory

DOI

10.15244/pjoes/81679