哈尔滨市热岛效应与植被的关系——基于RS和GIS的定量研究

利用遥感和地理信息系统技术对Landsat ETM＋热红外遥感数据进行处理，反演和计算了哈尔滨城区的地面亮温和植被指数。通过剖面分析，研究了城区温度场的空间格局与植被盖度的关系；通过多元回归分析，揭示了城区热岛效应同多个指数的相关关系。结果表明：市内的道外区是热岛效应的主要分布区，道里区、香坊区的情况也比较严重；铁路沿线区域是城区主要的热岛效应地带；植被盖度和地面亮温呈反相关关系；植被和水体区域可以缓解城市的热岛效应。通过对市区热岛效应分析，可以监测城市化进程，为城市热环境质量评价和热源调查提供准确、丰富的信息。

Relationship between heat island effect and vegetation in Harbin City:RS and GIS based quantitative study

Based on the remote sensing(RS) and geographical information system(GIS),the thermal infrared remote sensing image(Landsat ETM+) was used to retrieve the ground brightness temperature and calculate vegetation index.The relationship between vegetation fraction and spatial distribution of ground brightness temperature was studied by analyzing the section,the correlation of island effect with several index was studied by multiple regression analysis.The result shows that the heat island effect in Daowai District is severe,the situation of Daoli and Xiangfang districts is also worse and;the scope of the heat island effect is bigger and mainly concentrates along railway;the correlation of ground brightness temperature and vegetation fraction was negative;the area of vegetation and water body can relieve the heat island effect in Harbin City.Careful analysis of urban heat island effect can promote the process of urbanization and provide accurate and abundant information for urban heat environmen assessment and heat resources survey.