标题: Quantifying 3D building form effects on urban land surface temperature and modeling seasonal correlation patterns

作者: Li, HF (Li, Huifang); Li, YA (Li, Yanan); Wang, T (Wang, Tao); Wang, ZH (Wang, Zhihua); Gao, ML (Gao, Meiling); Shen, HF (Shen, Huanfeng)

来源出版物: BUILDING AND ENVIRONMENT 卷: 204 文献号: 108132 DOI: 10.1016/j.buildenv.2021.108132 出版年: OCT 15 2021

摘要: Multiple factors regulate urban land surface temperature (LST), including land cover, climate, and urban form, among which urban form is now receiving more and more attention. Some studies have discussed the planar effects of urban form on LST, whereas less concern has been devoted to the vertical structure of urban areas, which can have a significant effect on heat redistribution. In this paper, we quantify the three-dimensional building form (3DBF) effects on LST captured by Landsat thermal sensors over four seasons by using a random forest (RF) regression method. The five 3DBF factors of building density (BD), building height (BH), sky view factor (SVF), frontal area index (FAI), and building shadow (BS) are calculated within a grid. The seasonal correlation of the 3DBF factors with LST is analyzed, and seven correlation patterns are modeled for the city of Wuhan in China. The results show that: 1) The best grid scale for the building form analysis in a city such as Wuhan is 180 m. 2) The 3DBF factors have a significant effect on urban LST over the four seasons. BD, BH and BS are the season-stable factors, among which BD has a heating effect, which reaches a maximum of 3.6 degrees C in spring, while BS has a cooling effect, which reaches -3.4 degrees C in winter. There is also a transition point for BH between heating and cooling at a height of 10 m. 3) SVF and FAI are season-varying factors, in which SVF has cooling effect, except in summer, while FAI also has a cooling effect, but not in winter. These findings will help us to understand how building form affects urban surface temperature, and will provide a reference for urban policy makers and planners in the future.

入藏号: WOS:000691788800004

语言: English

文献类型: Article

作者关键词: Three-dimensional building form (3DBF); Land surface temperature; Random forest; Seasonal correlation pattern

地址: [Li, Huifang; Li, Yanan; Wang, Tao; Shen, Huanfeng] Wuhan Univ, Sch Resource & Environm Sci, Wuhan, Hubei, Peoples R China.

[Wang, Zhihua] Arizona State Univ, Sch Sustainable Engn & Built Environm, Tempe, AZ 85287 USA.

[Gao, Meiling] Changan Univ, Sch Geol Engn & Geomat, Xian, Shaanxi, Peoples R China.

通讯作者地址: Li, HF (通讯作者)，Wuhan Univ, Sch Resource & Environm Sci, Wuhan, Hubei, Peoples R China.

电子邮件地址: huifangli@whu.edu.cn

影响因子：6.456