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首页> 外文期刊>Landscape and ecological engineering >Effect of urban function and landscape structure on the urban heat island phenomenon in Beijing, China
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Effect of urban function and landscape structure on the urban heat island phenomenon in Beijing, China

机译：城市功能和景观结构对北京城市热岛现象的影响

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摘要

Rapid urbanization has aggravated the urban thermal risk and highlighted the urban heat island (UHI) effect. To improve understanding on the effect of urbanization on the UHI effect, it is essential to determine the relationship between the UHI effect and the complexities of urban function and landscape structure. For this purpose, 5116 urban function zones (UFZs), representing the basic function units of urban planning, were identified in Beijing. Land cover and land surface temperature (LST) values were extracted based on remote sensing data. UFZ, land cover, and LST were used to represent the urban function, landscape, and UHI characteristics, respectively. Then, the effects of urban function and landscape structure on the UHI effect were examined. The results indicated that the urban thermal environment exhibited obvious spatiotemporal heterogeneity due to the variation of urban function and landscape complexity: (1) UFZs showed significantly different LST characteristics for different functions and seasons, and the mean LST gap among different types of UFZ can reach 1.72-3.85 degrees C. (2) During warm seasons, the UHI region is mainly composed of residential, industrial, and commercial zones, while recreational zones contribute as an important UHI source region during cold seasons. (3) Urban developed land and forest are the most important landscape factors contributing to the UFZ effect in the urban thermal environment. These findings have useful implications for urban landscape zoning to mitigate the UHI effect.
机译：快速的城市化加剧了城市的热风险，并突出了城市热岛效应。为了更好地理解城市化对城市居民收入效应的影响，必须确定城市居民收入效应与城市功能和景观结构复杂性之间的关系。为此，在北京确定了代表城市规划基本功能单位的5116个城市功能区。根据遥感数据提取土地覆盖和土地表面温度（LST）值。 UFZ，土地覆盖和LST分别代表了城市功能，景观和UHI特征。然后，研究了城市功能和景观结构对超高保育效应的影响。结果表明，由于城市功能和景观复杂性的变化，城市热环境表现出明显的时空异质性：（1）UFZ在不同功能和季节上表现出明显不同的LST特征，不同类型UFZ之间的平均LST差距可以达到1.72-3.85摄氏度。（2）在温暖的季节，UHI地区主要由住宅区，工业区和商业区组成，而休闲区在寒冷季节是UHI的重要来源地区。 （3）城市发达的土地和森林是影响城市热环境中UFZ效应的最重要的景观因子。这些发现对缓解UHI效应的城市景观分区具有有益的意义。

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