【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。更多还原

【Abstract】 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 influencing 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.更多还原