Air PM<sub>10,2.5</sub> Removal by Urban Green Space Under Urban Realistic Stressors
Urbanization has significantly altered the ecological resources, functions, and services, thereby imposing specific constraints on particulate matter (PM) mitigation through green spaces. To investigate the effect of green spaces on mitigating PM<sub>10,2.5</sub> under multiple urban str...
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MDPI AG
2024-11-01
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| author | Yimei Sun Yilei Guan Bingjie Zhang Yi Zhou Linghan Du Chunyang Zhu |
| author_facet | Yimei Sun Yilei Guan Bingjie Zhang Yi Zhou Linghan Du Chunyang Zhu |
| author_sort | Yimei Sun |
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| description | Urbanization has significantly altered the ecological resources, functions, and services, thereby imposing specific constraints on particulate matter (PM) mitigation through green spaces. To investigate the effect of green spaces on mitigating PM<sub>10,2.5</sub> under multiple urban stressors, this study employed combined remote sensing imagery and small-scale quantitative measurements to identify the PM within green space and street tree, and their PM differences with the square underlying surface according to a continuous scale of 60~3000 m. The results indicated that urban stressors significantly influenced air PM<sub>10</sub> and PM<sub>2.5</sub> mitigation, with stressors LST (land surface temperature) and RD (traffic road density) as key stressors on air PM<sub>10</sub>, while LST, ISA (impervious surface area), BH (building height), NDVI (normalized difference vegetation index), GA (green space area), and WA (water body area) were key stressors on air PM<sub>2.5</sub>. Furthermore, stressors exhibited a significant scale effect on air PM<sub>10,2.5</sub> mitigation; for air PM<sub>2.5</sub>, stressors ISA, RD, BH and BD (building density) had a notable impact on air PM<sub>2.5</sub> mitigation at 1500~3000 m scales, while NDVI, GA, and WA showed a significant impact at 450~600 m. For air PM<sub>10</sub>, stressors ISA, BH, NDVI, and GA revealed a continuous scale effect, with the key scales occurring at 450 m and 3000 m. In summary, urbanization stressors can combine to affect air PM<sub>10</sub> and PM<sub>2.5</sub> mitigation by green spaces, especially at different spatial scales, to provide practical guidance for urban planning. |
| format | Article |
| id | doaj-art-413f72cf6aaf4f779280c0e597c0c2fa |
| institution | Kabale University |
| issn | 2073-4433 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
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| series | Atmosphere |
| spelling | doaj-art-413f72cf6aaf4f779280c0e597c0c2fa2024-12-27T14:09:46ZengMDPI AGAtmosphere2073-44332024-11-011512144310.3390/atmos15121443Air PM<sub>10,2.5</sub> Removal by Urban Green Space Under Urban Realistic StressorsYimei Sun0Yilei Guan1Bingjie Zhang2Yi Zhou3Linghan Du4Chunyang Zhu5Department of Landscape Architecture, College of Horticulture and Forest, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan 430070, ChinaDepartment of Landscape Architecture, College of Horticulture and Forest, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan 430070, ChinaDepartment of Landscape Architecture, College of Horticulture and Forest, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan 430070, ChinaDepartment of Landscape Architecture, College of Horticulture and Forest, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan 430070, ChinaDepartment of Landscape Architecture, College of Horticulture and Forest, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan 430070, ChinaDepartment of Landscape Architecture, College of Horticulture and Forest, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan 430070, ChinaUrbanization has significantly altered the ecological resources, functions, and services, thereby imposing specific constraints on particulate matter (PM) mitigation through green spaces. To investigate the effect of green spaces on mitigating PM<sub>10,2.5</sub> under multiple urban stressors, this study employed combined remote sensing imagery and small-scale quantitative measurements to identify the PM within green space and street tree, and their PM differences with the square underlying surface according to a continuous scale of 60~3000 m. The results indicated that urban stressors significantly influenced air PM<sub>10</sub> and PM<sub>2.5</sub> mitigation, with stressors LST (land surface temperature) and RD (traffic road density) as key stressors on air PM<sub>10</sub>, while LST, ISA (impervious surface area), BH (building height), NDVI (normalized difference vegetation index), GA (green space area), and WA (water body area) were key stressors on air PM<sub>2.5</sub>. Furthermore, stressors exhibited a significant scale effect on air PM<sub>10,2.5</sub> mitigation; for air PM<sub>2.5</sub>, stressors ISA, RD, BH and BD (building density) had a notable impact on air PM<sub>2.5</sub> mitigation at 1500~3000 m scales, while NDVI, GA, and WA showed a significant impact at 450~600 m. For air PM<sub>10</sub>, stressors ISA, BH, NDVI, and GA revealed a continuous scale effect, with the key scales occurring at 450 m and 3000 m. In summary, urbanization stressors can combine to affect air PM<sub>10</sub> and PM<sub>2.5</sub> mitigation by green spaces, especially at different spatial scales, to provide practical guidance for urban planning.https://www.mdpi.com/2073-4433/15/12/1443urban green spaceurban stressorsscale effectair particulate mattermitigation |
| spellingShingle | Yimei Sun Yilei Guan Bingjie Zhang Yi Zhou Linghan Du Chunyang Zhu Air PM<sub>10,2.5</sub> Removal by Urban Green Space Under Urban Realistic Stressors Atmosphere urban green space urban stressors scale effect air particulate matter mitigation |
| title | Air PM<sub>10,2.5</sub> Removal by Urban Green Space Under Urban Realistic Stressors |
| title_full | Air PM<sub>10,2.5</sub> Removal by Urban Green Space Under Urban Realistic Stressors |
| title_fullStr | Air PM<sub>10,2.5</sub> Removal by Urban Green Space Under Urban Realistic Stressors |
| title_full_unstemmed | Air PM<sub>10,2.5</sub> Removal by Urban Green Space Under Urban Realistic Stressors |
| title_short | Air PM<sub>10,2.5</sub> Removal by Urban Green Space Under Urban Realistic Stressors |
| title_sort | air pm sub 10 2 5 sub removal by urban green space under urban realistic stressors |
| topic | urban green space urban stressors scale effect air particulate matter mitigation |
| url | https://www.mdpi.com/2073-4433/15/12/1443 |
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