摘要
城市化进程的不断加快促使不透水表面迅速增加,不透水表面的变化对城市气候的变化有着巨大影响,其中最为显著的是城市热岛效应的出现。利用两个时相的Landsat ETM+/TM遥感影像数据,在RS和GIS技术支撑下,研究了滇池流域范围内不透水面和城市热岛的空间分布格局;并探讨了不透水面变化与城市热岛效应之间的关系。研究表明不透水面的存在导致了局部地区温度的明显升高,通过提取数据的对比发现城市热岛的空间分布和变化与不透水面的分布和变化存在着明显的一致性,而植被覆盖茂盛区域和水体则形成了城市中的"冷岛"区域。
The accelerating urbanization has encouraged the rapid increase in impervious surfaces. Impervious surface changes has a huge impact on city＇ s climate, and the most significant of which is the emergence of urban heat island effect. Two phases of Landsat ETM ＋/TM remote sensing data, under the support of RS and GIS, were used for researching the spatial distribution pattern both impervious surface and urban heat island within the scope of Dianchi Lake Basin, and exploring the relationship between the impervious surface change and urban heat island effect. The results show that the existence of impervious surface has led to surface temperatures significantly in- creased in some areas. Through extracting data comparison found that there is a clear consistency between the spa- tial distribution and changes of urban heat island and impervious surface. But the lush vegetation coverage area and waters become the city＇s ＂cold island＂ area.
出处
《科学技术与工程》
北大核心
2014年第3期49-54,共6页
Science Technology and Engineering
基金
国家高技术研究发展计划(863计划)(2012AA121402)
高等学院博士点学科专项科研基金(20115303110002)资助
关键词
ETM+
TM
不透水表面
热岛效应
滇池流域
ETM ＋/TM impervious surface urban heat island effect Dianchi Lake Basin
