摘要
利用TM/ETM+数据,以长沙市为例,反演了地表温度,并针对不同时相的遥感数据,利用城市热岛强度来反映热岛效应强弱的变化。结果表明,长沙市的热岛空间分布与城市建成区的轮廓相吻合。城市热岛的范围随着城市建设、新建开发区以及道路交通网的发展不断增大,且在东南方向为主要增长方向。根据热岛强度鉴别并提取了强热岛区与正常区,发现长沙市强热岛区的面积已经从1993年的13.18km2扩大至2008年的68.16km2。最后,对长沙市热岛未来的发展趋势进行了预测。
In this paper,the land surface temperature is retrieved and helped to calculate the multi-temporal heat island intensity based on Landsat TM/ETM＋ data in Changsha city.The results show that the extent of UHI and the built-up area in Changsha city are consistent.The new area of UHI grows rapidly with the development of urban construction,new development zones and road transport network mainly in the east-south direction.The heat island area and normal area are distinguished according to the heat island intensity.The heat island area has extended from 13.18km2 in 1993 to 68.16km2 in the year 2008.At last,the development trend of heat island in Changsha city is predicted.
出处
《遥感信息》
CSCD
2011年第6期73-78,共6页
Remote Sensing Information
基金
科技部中德国际科技合作重点项目(2007DFA90500)
湖南省自然科学基金项目(10JJ3022)
