中国三个主要城市地表温度对本地气候区响应的多城市比较
本研究选取中国北京、上海和西安为研究区，利用2019–2022年每个城市三个高温月（6–9月）的Landsat-8数据推导的平均地表温度（LST），比较了局地气候区（LCZ）对LST的响应。结果显示：1) 基于改进地理信息系统（GIS）的LCZ制图方法比基于世界城市数据库和访问门户工具（WUDAPT）的遥感方法具有更高的分类精度。例如，在上海，基于GIS的制图总体精度为81.3%，而WUDAPT为80.0%。生成的LCZ地图显示北京和西安的空间模式相似，紧凑低层建筑（LCZ 3）集中在城市核心区，自然LCZ类型（LCZ A和LCZ B）主要分布在周边地区。2) 不同LCZ类型之间观察到显著的LST差异。总体而言，北京和西安的LCZ间LST差异（分别为6.82 °C和6.01 °C）大于上海（4.41 °C）。同一LCZ类型内也观察到相当大的LST变化，表明同一LCZ内的城市组成差异也会影响LST。3) 城市形态指标与LST之间的关系因LCZ类型和城市而异。植被覆盖率（VCR）在北京和西安与LST呈最强的负相关，而在上海，透水面覆盖率（PCR）与LST的负相关性比VCR更强。此外，在西安，稀疏LCZ中增温组成覆盖率（WCCR）的相同增加量比在紧凑和开放LCZ中产生更大的LST增幅。4) 城市指标对LST的影响观察到类似模式。通常，增加植被产生的冷却效应强于减少相同面积的建筑物。建筑高度通过遮荫表现出显著的冷却效应，突显了其在城市设计中的重要性。
> 下面是被转发的邮件： > > 发件人: Google 学术搜索快讯 <[email protected]> > 主题: 推荐的文章 > 日期: 2026年11月2日 GMT+811:34:17 > 收件人: [email protected] > > [HTML] Linking Greenery Visibility Analysis and Urban Tree Planting Decisions by Quantifying the Visible Greenery Provision of Individual Street Trees <https://scholar.google.com/scholar_url?url=https://www.sciencedirect.com/science/article/pii/S1618866726005066&hl=zh-CN&sa=X&d=2574230192753214277&ei=uQToaoi_FdrPieoP8OvCmQw&scisig=AIL1Nv59k98vBk9jej6o-5p-xV36&oi=scholaralrt&html=&pos=0&folt=rel&fols=> > X Zhang, F Ludwig - Urban Forestry & Urban Greening, 2026 > Visible greenery, an important contribution of urban street trees, has been shown to > correlate with the spatial quality of streets, as well as with people's health and well- > being. 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Defined as unwanted or harmful sound, noise permeates several > environmental spaces, including urban parks. Urban parks are a common form of … > 保存 <https://scholar.google.com/citations?hl=zh-CN&update_op=email_library_add&info=PJuql6Qj1fUJ&citsig=AHQf-GIAAAAAbMk4OVqUK-REz1SoGgrZuyZBVtg> 速读重点 <https://scholar.google.com/scholar?q=info:PJuql6Qj1fUJ:scholar.google.com/&scioq=&output=scholaralrtaa&hl=zh-CN&html=&pos=1&folt=rel&fols=> > Multi-city Comparison of Land Surface Temperature Responses to Local Climate Zones in Three Major Chinese Cities, China <https://scholar.google.com/scholar_url?url=https://link.springer.com/article/10.1007/s11769-026-1696-5&hl=zh-CN&sa=X&d=4207431291641038629&ei=uQToaoi_FdrPieoP8OvCmQw&scisig=AIL1Nv5iSde13-ggCb5nZV6oet7T&oi=scholaralrt&html=&pos=2&folt=rel&fols=> > H Wang, C Yang, Z Ren - Chinese Geographical Science, 2026 > The local climate zone (LCZ) has been widely employed to explore the effects of > urban morphology on urban climate to mitigate negative impacts from heatwaves. > However, comparative studies on the relationships between LCZ and land surface … > 保存 <https://scholar.google.com/citations?hl=zh-CN&update_op=email_library_add&info=JYcgw3fMYzoJ&citsig=AHQf-GIAAAAAbMk4OVqu62qunGtuXtlNZFqQ2kw> > [HTML] Understanding Leapfrog Development for Better Urban Governance: Agent-Based Modeling and Parcel-Level Evidence <https://scholar.google.com/scholar_url?url=https://www.mdpi.com/2413-8851/10/11/622&hl=zh-CN&sa=X&d=4286428482610839373&ei=uQToaoi_FdrPieoP8OvCmQw&scisig=AIL1Nv5kBmzjC7LZdxjbVdIgDSKi&oi=scholaralrt&html=&pos=3&folt=rel&fols=> > Y Chen, H Guo, C Parasa - Urban Science, 2026 > Leapfrog development occurs when distant parcels are built while closer > developable land remains vacant. It is an urban-governance problem because > infrastructure and service obligations can be extended outward before existing … > 保存 <https://scholar.google.com/citations?hl=zh-CN&update_op=email_library_add&info=Tb8ilf5zfDsJ&citsig=AHQf-GIAAAAAbMk4OXL0pMXDuUBXfiuMQJv-r7s> 速读重点 <https://scholar.google.com/scholar?q=info:Tb8ilf5zfDsJ:scholar.google.com/&scioq=&output=scholaralrtaa&hl=zh-CN&html=&pos=3&folt=rel&fols=> > 查看所有推荐内容 <https://scholar.google.com/scholar?sciupd=2&hl=zh-CN> > > Google 学术搜索发送此邮件，是因为您关注了为您的个人学术档案 <https://scholar.google.com/citations?hl=zh-CN&user=JZ9U7ZIAAAAJ>推荐的新文章。 > > 取消快讯 <https://scholar.google.com/scholar_alerts?view_op=cancel_alert_options&email_for_op=yaoy%40cug.edu.cn&alert_id=YAp0Ef-vDFoJ&hl=zh-CN&citsig=AHQf-GIAAAAAavp5uU6uaO0QSAuZOKmv8KNl9Og> 【联网核验的原文摘要】 The local climate zone (LCZ) has been widely employed to explore the effects of urban morphology on urban climate to mitigate negative impacts from heatwaves. However, comparative studies on the relationships between LCZ and land surface temperature (LST) across cities with different urban forms and climatic backgrounds remain limited. This research selected Beijing, Shanghai, and Xi’an, China, as study areas to compare LST responses to LCZ, using Landsat-8-derived mean LST from three hot-month (June–September) scenes during 2019–2022 for each city. The results show: 1) the modified Geographic Information System (GIS)-based LCZ mapping method achieved higher classification accuracy than the World Urban Database and Access Portal Tools (WUD-APT)-based remote sensing approach. For example, in Shanghai, the overall accuracy was 81.3% for GIS-based mapping, compared with 80.0% for WUDAPT. The resulting LCZ maps indicated similar spatial patterns in Beijing and Xi’an, with compact low-rise buildings (LCZ 3) concentrated in the urban cores and natural LCZ types (LCZ A and LCZ B) mainly distributed in the peripheral areas. 2) Pronounced LST differences were observed among LCZ types. Overall, Beijing and Xi’an exhibited larger inter-LCZ LST differences (6.82 °C and 6.01 °C, respectively) than Shanghai (4.41 °C). Considerable LST variations were also observed within the same LCZ type, indicating that differences in urban composition within the same LCZ also influence LST. 3) The relationships between urban morphology metrics and LST varied among LCZ types and cities. Vegetation coverage ratio (VCR) showed the strongest negative correlation with LST in Beijing and Xi’an, whereas pervious surface coverage ratio (PCR) showed a stronger negative correlation with LST than VCR in Shanghai. In addition, the same increase in warming composition coverage ratio (WCCR) produced a greater increase in LST in sparse LCZs than in compact and open LCZs in Xi’an. 4) Similar patterns were observed in the effects of urban metrics on LST. Typically, increasing vegetation generated a stronger cooling effect than reducing the same area of buildings. Building height exhibited a notable cooling effect through shading, highlighting its importance for urban design. These findings support LCZ-specific urban morphology optimization and heat mitigation through regulating vegetation, pervious surfaces, building coverage, and building height.
这些发现支持针对特定LCZ的城市形态优化，并通过调节植被、透水面、建筑覆盖率和建筑高度来缓解热效应。