哈尔滨市城市化进程中热岛效应研究

Effect of Urbanization on Urban Heat Island: A Case Study in Harbin

城市化是现代化进程的象征,也是一个重要的社会经济现象。城市作为经济发展的中心加速经济和社会发展,仍会造成许多环境问题,城市热岛(UHI)效应是城市化和人类文明工业化的环境影响之一。UHI效应具有城市大气和地表温度高于周围农村地区的特征。城市地区的表面较暗,植被比农村周围少,人造建筑表面和地面颜色较深,具有较低太阳能反射率,可吸收更多太阳辐射。哈尔滨市是黑龙江省的省会城市,是人口最多的城市之一。研究总结哈尔滨城市扩展发展规律可为城市规划管理提供参考。利用遥感技术对哈尔滨城市热环境强度进行研究,分析热岛效应的成因和本质,可为今后改善城市热环境提供理论上的支撑。

Urbanization is one of the most vigorous and visible artificial forces on earth and the basic symbol of the modernization process.However,numerous environmental problems,for example,the urban heat island(UHI)effect,could be caused by the development of city.UHI effect has the characteristics of higher urban atmospheric surface temperatures than its surrounding rural areas.Summary of the development regularity of city expanding in Harbin could provide reference for planning and management.The paper studies the causes and the essence of urban heat island effect in a bid to provide theoretical support for improving urban thermal environment in the future.