基于遥感技术的城市布局与热环境关系研究——以武汉市为例

以夏季炎热的武汉市为例,通过ETM+卫星遥感影像反演城市的地表温度,并对城市的下垫面进行分类,然后与归一化植被指数等表征下垫面植被状况的参数进行综合对比,反映城市热岛的状态,研究其内部结构及相应的下垫面类型,提出针对性的下垫面改善措施。此外借助遥感影像,采取典型地物选点研究的方法开展深入分析,进一步探寻下垫面与热环境的关系。研究结果表明,城市的热环境与城市规划之间存在着较为密切的关系。城市下垫面的不合理布局和人为活动的过度密集是热岛效应产生的主要因素。而植被和水体是调节城市热岛效应的较好手段,应该给予重视。

RELATIONSHIP BETWEEN CITY LAYOUT AND HEAT ENVIRONMENT BASED ON REMOTE SENSING TECHNOLOGY:A CASE STUDY OF WUHAN CITY

The relationship between heat envi-ronment and city layout is a new subject in ecological planning and scientific planning,while heat island ef-fect is the main problem for the heat environment of city.This paper takes Wuhan city,which is extremely hot in summer,as an example.ETM+ satellite images are used to inverse the city's surface temperature and classify the city's underlying surface.Then these data are evaluated with the parameters which reflect the condition of vegetation of underlying surface such ...