Vegetation Configuration Effects on Microclimate and PM<sub>2.5</sub> Concentrations: A Case Study of High-Rise Residential Complexes in Northern China
While urban greenery is known to regulate microclimates and reduce air pollution, its integrated effects remain insufficiently quantified. Through field monitoring and ENVI-met 5.1 modeling of high-rise residential areas in Jinan, the results demonstrate that: (1) vegetation exhibits distinct spatia...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-06-01
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| Series: | Atmosphere |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4433/16/6/672 |
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| Summary: | While urban greenery is known to regulate microclimates and reduce air pollution, its integrated effects remain insufficiently quantified. Through field monitoring and ENVI-met 5.1 modeling of high-rise residential areas in Jinan, the results demonstrate that: (1) vegetation exhibits distinct spatial impacts in air-quality impacts, reducing roadside PM<sub>2.5</sub> by 26.63 μg/m<sup>3</sup> while increasing building-adjacent levels by 17.5 μg/m<sup>3</sup>; (2) shrubs outperformed trees in PM<sub>2.5</sub> reduction (up to 65.34%), particularly when planted in inner rows, whereas tree crown morphology and spacing showed negligible effects; (3) densely spaced columnar trees optimize cooling, reducing T<sub>a</sub> by 3–4.8 °C and the physiological equivalent temperature (PET*) by 8–12.8 °C, while planting trees on the outer row and shrubs on the inner row best balanced thermal and air-quality improvements; (4) each 1 m<sup>2</sup>/m<sup>3</sup> leaf area density (LAD) increase yields thermal benefits (ΔT<sub>a</sub> = −1.07 °C, ΔPET* = −1.93 °C) but elevates PM<sub>2.5</sub> by 4.32 μg/m<sup>3</sup>. These findings provide evidence-based vegetation design strategies for sustainable urban planning. |
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| ISSN: | 2073-4433 |