Urban Forest Locations and Patch Characteristics Regulate PM<sub>2.5</sub> Mitigation Capacity
Atmospheric pollution caused by fine particulate matter (PM<sub>2.5</sub>) seriously damages human health. Urban forests have the ecological function of purifying the atmosphere, which can effectively reduce the ambient PM<sub>2.5</sub> concentration. This paper analyzed the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Forests |
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| Online Access: | https://www.mdpi.com/1999-4907/13/9/1408 |
| _version_ | 1797488333740310528 |
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| author | Chang Zhai Guangdao Bao Dan Zhang Yinghu Sha |
| author_facet | Chang Zhai Guangdao Bao Dan Zhang Yinghu Sha |
| author_sort | Chang Zhai |
| collection | DOAJ |
| description | Atmospheric pollution caused by fine particulate matter (PM<sub>2.5</sub>) seriously damages human health. Urban forests have the ecological function of purifying the atmosphere, which can effectively reduce the ambient PM<sub>2.5</sub> concentration. This paper analyzed the ability of different forest types to mitigate PM<sub>2.5</sub> pollution and explored the effects of forest quality and morphological parameters on PM<sub>2.5</sub> concentration on the forest patch level. The results concluded that the PM<sub>2.5</sub> concentration of the Landscape and Relaxation Forest (LF) was significantly lower than that of the Roadside Forest (RF) and Affiliated Forest (AF) due to the environmental quality of their location. The effective distance of LF on PM<sub>2.5</sub> reduction was 80 m, which was significantly higher than RF and AF. The Normalized Difference Vegetation Index (NDVI), which indicated forest growth status, was the most effective parameter for improving the urban forest PM<sub>2.5</sub> mitigation ability. The concentration of PM<sub>2.5</sub> decreased linearly with the increase in NDVI. The area and perimeter of the forest patches had a significant nonlinear negative correlation with PM<sub>2.5</sub> concentration. In addition, the more irregular the shape of the forest patch, the lower the PM<sub>2.5</sub> concentration of the forest. Moreover, the simpler shape of RF and AF helped to alleviate PM<sub>2.5</sub> pollution. The round shape of AF more efficiently reduced PM<sub>2.5</sub> concentration. Our study demonstrated that the surrounding environment, forest growth status, and patch forms determined the PM<sub>2.5</sub> reduction capacity of an urban forest. The corresponding management and adjustment methods should be implemented in future urban forest management. |
| first_indexed | 2024-03-10T00:00:37Z |
| format | Article |
| id | doaj.art-aaa8e29c6ea641deb82661a6bf739b50 |
| institution | Directory Open Access Journal |
| issn | 1999-4907 |
| language | English |
| last_indexed | 2024-03-10T00:00:37Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Forests |
| spelling | doaj.art-aaa8e29c6ea641deb82661a6bf739b502023-11-23T16:16:58ZengMDPI AGForests1999-49072022-09-01139140810.3390/f13091408Urban Forest Locations and Patch Characteristics Regulate PM<sub>2.5</sub> Mitigation CapacityChang Zhai0Guangdao Bao1Dan Zhang2Yinghu Sha3College of Landscape Architecture, Changchun University, Changchun 130022, ChinaInstitute of Forest Management, Jilin Provincial Academy of Forestry Sciences, Changchun 130033, ChinaCollege of Landscape Architecture, Changchun University, Changchun 130022, ChinaCollege of Landscape Architecture, Changchun University, Changchun 130022, ChinaAtmospheric pollution caused by fine particulate matter (PM<sub>2.5</sub>) seriously damages human health. Urban forests have the ecological function of purifying the atmosphere, which can effectively reduce the ambient PM<sub>2.5</sub> concentration. This paper analyzed the ability of different forest types to mitigate PM<sub>2.5</sub> pollution and explored the effects of forest quality and morphological parameters on PM<sub>2.5</sub> concentration on the forest patch level. The results concluded that the PM<sub>2.5</sub> concentration of the Landscape and Relaxation Forest (LF) was significantly lower than that of the Roadside Forest (RF) and Affiliated Forest (AF) due to the environmental quality of their location. The effective distance of LF on PM<sub>2.5</sub> reduction was 80 m, which was significantly higher than RF and AF. The Normalized Difference Vegetation Index (NDVI), which indicated forest growth status, was the most effective parameter for improving the urban forest PM<sub>2.5</sub> mitigation ability. The concentration of PM<sub>2.5</sub> decreased linearly with the increase in NDVI. The area and perimeter of the forest patches had a significant nonlinear negative correlation with PM<sub>2.5</sub> concentration. In addition, the more irregular the shape of the forest patch, the lower the PM<sub>2.5</sub> concentration of the forest. Moreover, the simpler shape of RF and AF helped to alleviate PM<sub>2.5</sub> pollution. The round shape of AF more efficiently reduced PM<sub>2.5</sub> concentration. Our study demonstrated that the surrounding environment, forest growth status, and patch forms determined the PM<sub>2.5</sub> reduction capacity of an urban forest. The corresponding management and adjustment methods should be implemented in future urban forest management.https://www.mdpi.com/1999-4907/13/9/1408locationgrowth statuspatch formsPM<sub>2.5</sub> concentrationurban forest |
| spellingShingle | Chang Zhai Guangdao Bao Dan Zhang Yinghu Sha Urban Forest Locations and Patch Characteristics Regulate PM<sub>2.5</sub> Mitigation Capacity Forests location growth status patch forms PM<sub>2.5</sub> concentration urban forest |
| title | Urban Forest Locations and Patch Characteristics Regulate PM<sub>2.5</sub> Mitigation Capacity |
| title_full | Urban Forest Locations and Patch Characteristics Regulate PM<sub>2.5</sub> Mitigation Capacity |
| title_fullStr | Urban Forest Locations and Patch Characteristics Regulate PM<sub>2.5</sub> Mitigation Capacity |
| title_full_unstemmed | Urban Forest Locations and Patch Characteristics Regulate PM<sub>2.5</sub> Mitigation Capacity |
| title_short | Urban Forest Locations and Patch Characteristics Regulate PM<sub>2.5</sub> Mitigation Capacity |
| title_sort | urban forest locations and patch characteristics regulate pm sub 2 5 sub mitigation capacity |
| topic | location growth status patch forms PM<sub>2.5</sub> concentration urban forest |
| url | https://www.mdpi.com/1999-4907/13/9/1408 |
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