摘要
城市绿地具有降温作用,可形成低温区域从而降低环境温度,是缓解城市热岛的有效途径。选取上海市城郊外环和近郊环之间的“双环”区域的30个绿地斑块为研究对象,通过地表温度反演,对城郊绿地的冷岛效应从降温幅度和降温距离两个方面进行评价,并从城郊绿地空间格局特征和外部环境特征两个方面分析了冷岛效应的影响因素。结果表明绿地的选址、布局形态和规模、蓝绿空间耦合、城市开发强度、与夏季主导风向的关系是影响城郊绿地冷岛效应的主要因素。提升上海城郊绿地的冷岛效应应权衡降温距离或降温幅度的需求,进而控制适宜的绿地空间特征,加强蓝绿空间的组合配置,使绿地主轴方向尽量平行于夏季主导风向。
Urban green space has a cooling effect and can form a low-temperature area to reduce the ambient temperature,which is an effective way to alleviate urban heat island islands.This study selected 30 green patches in the suburban area of Shanghai as the research objects.Through surface temperature inversion,the cold island effect of the suburban greenbelt was evaluated from two aspects which are cooling amplitude and cooling distance,and the infl uencing factors of the cold island effect were analyzed from two aspects of spatial pattern characteristics and external environment characteristics of the suburban greenbelt.It is concluded that the location,layout,and scale of green space,the coupling of blue and green space,the intensity of urban development,and the relationship with the dominant summer wind direction are the main factors affecting the cold island effect of suburban green space.To improve the cold island effect of suburban green space in Shanghai,we should weigh the demand of cooling distance or cooling amplitude,then control the appropriate green space characteristics,strengthen the combination of blue and green space,and make the main axis of green space parallel to the dominant summer wind direction as far as possible.
作者
刘颂
邹清华
张浪
LIU Song;ZOU Qinghua;ZHANG Lang(College of Architecture and Urban Planning,Tongji University,Shanghai,China,200092;Shanghai Academy of LandscapeArchitecture Science and Planning,,Shanghai,China,200232)
出处
《园林》
2023年第12期14-21,共8页
Landscape Architecture Academic Journal
基金
国家自然科学基金“基于生态系统服务权衡与协同的市级生态空间多目标优化研究”(编号:52178050)
上海同济城市规划设计研究院有限公司、长三角城市群智能规划协同创新中心科研课题“基于多效益协同最优的绿色基础设施格局优化研究”(编号:KY-2022-YB-A05)。
关键词
冷岛效应
城郊绿地
影响因素
格局优化
上海市
cold island effect
suburban green space
infl uence factors
pattern optimization
Shanghai
