基于Landsat数据的城市热岛效应与LUCC关系研究

Study on the Relationship between Urban Heat Island Effect and LUCC Based on Landsat Data

以Landsat-5和Landsat-8遥感影像数据为基础,通过地表温度反演和支持向量机分类法分别获得研究区城市热岛的空间分布和土地利用/覆盖变化数据,再利用ArcGIS对上述结果进行叠加分析。结果表明:城市热岛范围与强度随着时间变化呈上升趋势;土地利用/覆盖的变化在空间位置上会影响城市热岛效应;其中城市中建设用地与裸土地是导致热岛效应加剧的主要原因,而水系与植被对城市热岛效应有明显的抑制作用。

The spatial distribution of Urban Heat Island and Land Use/Cover Change data in the study area were obtained by land surface temperature inversion and support vector machine classification method,based on the remote sensing image data from Landsat-5 and Landsat-8.The results were overlay and analyzed through ArcGIS.The results show that the range and intensity of Urban Heat Island are increasing over time.Land Use/Cover Change affects the spatial distribution of Urban Heat Island Effect.The construction land and bare land of the certain city are the main reasons for exacerbating Urban Heat Island Effect,meanwhile the water system and vegetation have obvious inhibition on the Urban Heat Island effect.