Strategic enhancement of urban tree cover fraction to mitigate hourly accumulated population exposure to land surface temperature extremes
文献类型：期刊论文
| 作者 | Quan, Jinling4,5; Guo, Jiali4,5; Liu, Yang4,5; Chen, Jilong3; Luan, Qingzu2; Pei, Tao1,4,5 |
| 刊名 | URBAN FORESTRY & URBAN GREENING
 |
| 出版日期 | 2025-11-01 |
| 卷号 | 113页码:129020 |
| 关键词 | Land surface temperature Urban heat island Population exposure Urban tree Building morphology Remote sensing |
| ISSN号 | 1618-8667 |
| DOI | 10.1016/j.ufug.2025.129020 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Strategic enhancement of urban tree cover is crucial for maximizing heat mitigation while conserving space and minimizing costs. However, existing studies rarely evaluate the efficiency of consistent tree cover increases in reducing population exposure to extreme temperatures at sub-daily scales, especially over time and across diverse building morphologies. This limitation largely stems from insufficient integration of detailed spatiotemporal thermal characteristics and dynamic population distributions. To address this gap, this study employs 30-m tree cover fraction (TCF) map, seamless hourly 30-m land surface temperature (LST) data, and hourly mobile phone positioning records to quantify hourly accumulated population exposure to LST extremes-defined as the annual sum of hot hours multiplied by exposed populations-in central Beijing over 2016-2020. we then use a spatially explicit machine learning algorithm to assess exposure reduction efficiencies across diverse TCF enhancement strategies and building types. Results show an annual exposure of 1067 million person & sdot;hours (1441 per 30 x30 m2 grid), including 625 million during the day and 443 million at night. Compact/low-rise blocks exhibit more hot hours than open/high-rise blocks. City-wide strategies targeting populous and low-TCF areas reduce total TCF required to achieve equivalent exposure mitigation as uniform approaches (saving 0.6 %- 20.2 % TCF), with the former demonstrating greater efficiency. Compact mid-rise and low-rise blocks yield the highest exposure reduction efficiency, whereas interventions in high-rise blocks risk adverse effects. This study provides a practical framework for targeted tree cover enhancement, supporting health-oriented urban climate resilience. |
| URL标识 | 查看原文 |
| WOS关键词 | CLIMATE ; HEAT ; REFLECTANCE ; IMPACT ; MODEL |
| WOS研究方向 | Plant Sciences ; Environmental Sciences & Ecology ; Forestry ; Urban Studies |
| 语种 | 英语 |
| WOS记录号 | WOS:001595337000002 |
| 出版者 | ELSEVIER GMBH |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/217567]  |
| 专题 | 资源与环境信息系统国家重点实验室_外文论文 |
| 通讯作者 | Quan, Jinling |
| 作者单位 | 1.Jiangsu Ctr Collaborat Innovat Geog Informat Resou, Nanjing 210023, Peoples R China 2.Beijing Municipal Climate Ctr, Beijing 100089, Peoples R China; 3.China Univ Min & Technol Beijing, Sch Environm & Spatial Informat, Beijing 100083, Peoples R China; 4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China; 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Quan, Jinling,Guo, Jiali,Liu, Yang,et al. Strategic enhancement of urban tree cover fraction to mitigate hourly accumulated population exposure to land surface temperature extremes[J]. URBAN FORESTRY & URBAN GREENING,2025,113:129020. |
| APA | Quan, Jinling,Guo, Jiali,Liu, Yang,Chen, Jilong,Luan, Qingzu,&Pei, Tao.(2025).Strategic enhancement of urban tree cover fraction to mitigate hourly accumulated population exposure to land surface temperature extremes.URBAN FORESTRY & URBAN GREENING,113,129020. |
| MLA | Quan, Jinling,et al."Strategic enhancement of urban tree cover fraction to mitigate hourly accumulated population exposure to land surface temperature extremes".URBAN FORESTRY & URBAN GREENING 113(2025):129020. |
入库方式： OAI收割
来源：地理科学与资源研究所
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