ETM+在喀斯特地区城市扩张与城市热岛关系中的应用——以贵阳市为例

ETM + image was applied with the relationship between urban expansion and the urban heat island in the Karsts area——with Guiyang city as an example

论文以土地利用变化和温度反演原理应用2000,2010年两时期的ETM+数据源,对贵阳市进行城市扩张的土地利用现状和城市热岛效应的亮温的提取,并对其关系进行分析。其结果表明,利用ETM+热红外波段反演分析城市宏观热温分布特征,是研究城市扩张的一种可行的方法,不同的土地覆盖对地表温度的影响各不相同,绿化工程可以一定程度上缓解热岛效应。

Based on the ETM ＋ data source for land use change and temperature inversion principle is applied in 2000 and 2010 two period,the city expansion of Guiyang city land utilization and urban heat island effect of brightness temperature of extraction,and the analysis of the relationship between. The results show that,using thermal infrared band of the ETM ＋ analysis and inversion the macroscopic temperature distribution characteristics of city,is a feasible method to study the city expansion,different land cover influence on the surface temperature of each are not identical,the heat island effect can be mitigated in some extent by the green engineering.