齐齐哈尔市蓝绿空间时空变化与城市热岛关系研究
Study on the Spatio-Temporal Changes of Blue-Green Space and Its Relationship with Urban Heat Island in Qiqihar City

随着城市化进程的快速推进，城市空间的迅速扩张导致下垫面性质发生改变，进而引发的城市热岛效应(Urban Heat Island, UHI)逐渐成为威胁城市生态环境和人类健康的主要因素之一。本研究以齐齐哈尔为研究对象，对其蓝绿空间与热岛效应进行分析。结果如下：1) 齐齐哈尔土地利用类型主要以绿色空间为主，其次为不透水面空间，而蓝色空间面积较小；2) 从2012年到2021年，齐齐哈尔的地表温度高值区经历了由扩散到聚集再到增强的变化过程，总体呈增长趋势；3) 地理探测器结果表明，NDVI和MNDWI两者及其相互作用均能很好地影响齐齐哈尔的地表温度。
With the rapid progress of urbanization, the rapid expansion of urban space has led to changes in the nature of the underlying surface, which in turn has caused the Urban Heat Island (UHI) effect to gradually become one of the main factors threatening the urban ecological environment and human health. This study takes Qiqihar as the research object and analyzes its blue-green space and heat island effect. The results are as follows: 1) The land use types in Qiqihar are mainly green space, followed by impervious surface space, while the blue space area is relatively small; 2) From 2012 to 2021, the high-value areas of surface temperature in Qiqihar underwent a process of diffusion, aggregation, and enhancement, showing an overall increasing trend; 3) The results of the geographical detector indicate that both NDVI and MNDWI, as well as their interaction, can significantly affect the surface temperature in Qiqihar.