武汉市热环境时空分布特征  

Study of temporal and spatial distribution of thermal environment in Wuhan city

作　　者：龚珍[1,2] 胡友健[1] 黎华[2] 

机构地区：[1]中国地质大学信工学院,武汉430079 [2]武汉理工大学资环学院,武汉430079

出　　处：《测绘科学》2016年第6期84-86,101,共4页Science of Surveying and Mapping

基　　金：十二五国家科技支撑计划项目(2012BAJ11B00);国家自然科学基金面上项目(41301588);中国博士后科学基金资助项目(2013M531749);中央高校基本科研业务费专项资助项目(2014-IV-075);中国地质大学校级教学实验项目(SKJ2014159)

摘　　要：针对城市热岛效应的演化规律问题,该文以2002年7月9日湖北武汉市的Landsat遥感影像和中分辨率成像光谱仪遥感影像为研究基础,采用归一化差分植被指数,归一化建筑指数,修正后归一化水体指数分别提取了武汉市的植被区域、建筑区域、水体区域,采用密度分割方法对武汉市白天和晚上的温度进行了分区,利用改进的间隙度维数对武汉市热环境白天和晚间的分布特征进行了研究。实验结果表明:对于城市特高温区,白天比晚上的面积大而且集中;对于城市特低温区,白天比晚间面积小而且分散;为研究城市白天和夜间的热岛效应变化提供了一定的参考依据。The analysis and evaluation of urban heat island effect is one of the important contents of urban climate and environment research.In order to further study the evolution of urban heat island effect,based on Landsat remote sensing image and MODIS remote sensing image of Wuhan city on July 9,2002,the NDVI,NDBI,MNDWI indexes were used to extract the vegetation area.Building area,water area,and the temperature of Wuhan city during the day and night were studied by using density partition method.The experimental results showed that the area was larger and more concentrated during the day than in the evening in the special high temperature zone;and the area was smaller and more scattered in the special low temperature zone during the day than in the evening.

关 键 词：热环境时空变化 密度分割 重心模型 间隙度维数 

分 类 号：P208[天文地球—地图制图学与地理信息工程]