邯郸城市热空间遥感监测研究

The observation of city thermal space using remote sensing in Handan

以邯郸市区以及周围部分县区为研究对象,利用1988年至2010年间5景Landsat TM/ETM+热红外波段数据反演邯郸市地表亮温,通过对多时相地表亮温图像进行归一化处理,得到相对温度,并进行热岛分级。研究结果表明:20多年间邯郸市出现热岛区的位置相对稳定,但大面积低温、次低温区转换为中温区、次高温和高温区,热岛现象向西、南方向扩张;热岛面积总体呈上升趋势。热岛时空分布特征及异常现象产生的原因主要是由于城市化的加快导致邯郸市下垫面发生了变化。

We made the near - surface luminance temperature through the sixth band of Landsat TM/ ETM ＋ sensors from 1988 to 2010. We analyze the space structure characteristic and the change of area percent, the result showed that the position of high heat island was stable, but the large low and sub - low area change to the middle, sub - high and high temperature areas. The heat island extended from north - east to south - west, and the areas of heat island was enlarge in 20 years. The reason for these may be the change of the city＇ s underlaying surface resulting from the urbanization, so how to improve the composition of the underlaying surface, is desiderate for relieving the Handan＇ s heat is- land effect.