Contribution of urban trees in reducing land surface temperature: Evidence from china's major cities
Urban trees mitigate urban heat by altering evapotranspiration processes and providing shade to their surrounding environment. Nevertheless, the impact through which three-dimensional tree characteristics alleviate Land Surface Temperature (LST) remain uncertain, especially for climatic zone differe...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | International Journal of Applied Earth Observations and Geoinformation |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1569843223003941 |
| _version_ | 1827582876887023616 |
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| author | Andong Guo Tingting He Wenze Yue Wu Xiao Jun Yang Maoxin Zhang Mengmeng Li |
| author_facet | Andong Guo Tingting He Wenze Yue Wu Xiao Jun Yang Maoxin Zhang Mengmeng Li |
| author_sort | Andong Guo |
| collection | DOAJ |
| description | Urban trees mitigate urban heat by altering evapotranspiration processes and providing shade to their surrounding environment. Nevertheless, the impact through which three-dimensional tree characteristics alleviate Land Surface Temperature (LST) remain uncertain, especially for climatic zone differences. In this study, we investigated the potential of trees to mitigate LST in 35 Chinese major cities and quantified the importance of diverse factors influencing the magnitude of cooling effects. Results showed that LST in tree-covered areas was about 2.23 °C lower than their surrounding built-up areas during summer, but an opposite temperature pattern was observed in winter and these cities are mostly distributed in Bs (arid-steppe) and Dw (cold-dry winter) climate zones. Moreover, we found that for every 1 m increase in tree height, LST decreased by ∼ 0.19 °C and ∼ 0.10 °C during summer and winter, respectively. Notably, we also found seasonal and climatic zone differences in the drivers of tree cooling intensity, with the digital elevation model (DEM = ∼13.21 %) as the key factor. These findings can help planners and architects better understand the effects of tree cooling, which can be a significant guide to reducing urban heat. |
| first_indexed | 2024-03-08T22:57:54Z |
| format | Article |
| id | doaj.art-c7c04a21444b4410bd293f410060a115 |
| institution | Directory Open Access Journal |
| issn | 1569-8432 |
| language | English |
| last_indexed | 2024-03-08T22:57:54Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Applied Earth Observations and Geoinformation |
| spelling | doaj.art-c7c04a21444b4410bd293f410060a1152023-12-16T06:06:30ZengElsevierInternational Journal of Applied Earth Observations and Geoinformation1569-84322023-12-01125103570Contribution of urban trees in reducing land surface temperature: Evidence from china's major citiesAndong Guo0Tingting He1Wenze Yue2Wu Xiao3Jun Yang4Maoxin Zhang5Mengmeng Li6Department of Land Management, Zhejiang University, Hangzhou 310058, ChinaDepartment of Land Management, Zhejiang University, Hangzhou 310058, China; Corresponding author..Department of Land Management, Zhejiang University, Hangzhou 310058, ChinaDepartment of Land Management, Zhejiang University, Hangzhou 310058, ChinaJangho Architecture College, Northeastern University, Shenyang 110169, ChinaDepartment of Land Management, Zhejiang University, Hangzhou 310058, ChinaSwiss Federal Research Institute WSL, Zürcherstrasse 111, CH-8903 Birmensdorf, Zurich, SwitzerlandUrban trees mitigate urban heat by altering evapotranspiration processes and providing shade to their surrounding environment. Nevertheless, the impact through which three-dimensional tree characteristics alleviate Land Surface Temperature (LST) remain uncertain, especially for climatic zone differences. In this study, we investigated the potential of trees to mitigate LST in 35 Chinese major cities and quantified the importance of diverse factors influencing the magnitude of cooling effects. Results showed that LST in tree-covered areas was about 2.23 °C lower than their surrounding built-up areas during summer, but an opposite temperature pattern was observed in winter and these cities are mostly distributed in Bs (arid-steppe) and Dw (cold-dry winter) climate zones. Moreover, we found that for every 1 m increase in tree height, LST decreased by ∼ 0.19 °C and ∼ 0.10 °C during summer and winter, respectively. Notably, we also found seasonal and climatic zone differences in the drivers of tree cooling intensity, with the digital elevation model (DEM = ∼13.21 %) as the key factor. These findings can help planners and architects better understand the effects of tree cooling, which can be a significant guide to reducing urban heat.http://www.sciencedirect.com/science/article/pii/S1569843223003941Land surface temperatureTree heightCooling effectBuilding formBoosted regression trees |
| spellingShingle | Andong Guo Tingting He Wenze Yue Wu Xiao Jun Yang Maoxin Zhang Mengmeng Li Contribution of urban trees in reducing land surface temperature: Evidence from china's major cities International Journal of Applied Earth Observations and Geoinformation Land surface temperature Tree height Cooling effect Building form Boosted regression trees |
| title | Contribution of urban trees in reducing land surface temperature: Evidence from china's major cities |
| title_full | Contribution of urban trees in reducing land surface temperature: Evidence from china's major cities |
| title_fullStr | Contribution of urban trees in reducing land surface temperature: Evidence from china's major cities |
| title_full_unstemmed | Contribution of urban trees in reducing land surface temperature: Evidence from china's major cities |
| title_short | Contribution of urban trees in reducing land surface temperature: Evidence from china's major cities |
| title_sort | contribution of urban trees in reducing land surface temperature evidence from china s major cities |
| topic | Land surface temperature Tree height Cooling effect Building form Boosted regression trees |
| url | http://www.sciencedirect.com/science/article/pii/S1569843223003941 |
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