摘要
利用Landsat TM／ETM^＋卫星影像的热红外数据反演了武汉市的地表温度，定量地分析了1988～2002年武汉市热岛的时空分布；结合遥感手段和误差反向传播神经网络方法，动态地模拟了当汉口地区下垫面覆盖类型变化时的热岛分布情况，重点对绿地增加时热岛的变化作了详细的分析。结果显示，1988～2002年，武汉市城市热岛效应明显增强，绿地面积的增加能缓解局部热岛的范围和强度，绿地面积越大，热岛的缓冲范围越大，缓冲强度亦大。
The thermal infrared data of landsat thematic mapper imagery is used to study the time and space distribution of the heat island of Wuhan between 1988 to 2002. Remote sensing methods and BP neural network are combined to dynamically simulate the land surface temperature of Hankou when the land surface structure of the city changed; the change of the heat-island when the vegetation increase of the city, is analyzed emphatically. The result indicates that, from 1988 to 2002,the urban heat island effect has noticeably increased. The increasing green area can decrease the scope and the intensity of local urban heat island. The larger the area of vegetation is, the wider relaxation of the urban heat-island effect is, and the stronger its relaxation power is.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2008年第12期1229-1232,共4页
Geomatics and Information Science of Wuhan University
基金
国家863计划资助项目(2007AA12Z148
2007AA12Z181)
国家自然科学基金资助项目(40771139
40523005)
极地测绘科学国家测绘局重点实验室开放研究基金资助项目
关键词
热岛效应
遥感监测
动态模拟
urban heat island
monitor by remote sensing
dynamically simulating
