摘要
随着全球城市化高速发展,城市热岛效应日益显著,给城市人居环境带来了诸多不利影响。本文以杭州市为例,运用遥感反演和空间统计方法,深入分析杭州市多方位、多时序的城市热剖面曲线特征,探讨杭州市城市热剖面曲线演化驱动机制。研究结果表明:杭州市4个方向的热剖面曲线呈现出明显的城乡梯度变化,存在比较明显的城市热岛现象;杭州城市热岛效应的范围和幅度不断增加,城市湿地和公园绿地的冷岛效应呈不断增强的趋势;水体指数MNDWI,植被指数NDVI,不透水面指数NDISI与杭州城市热岛的形成有密切的关系。
Urban heat island(UHI) effect has become increasingly notable with the acceleration of global urbanization,which has brought about many negative effects on urban ecosystems.Hangzhou,which is a representative rapidly urbanizing city in China,was selected as a case study for researching the characteristics of urban thermal profiles and its driving mechanism is investigated by means of remote sensing and spatial statistics methods.The results are as follows:the thermal profiles of Hangzhou showing an urban-rural temperature gradient in four directions,indicates the existence of UHI in Hangzhou.Temporal evolution analysis shows that the scope and amplitude of UHI in Hangzhou has increased,at the same time,the cold island effect of urban wetland and park showed a growing trend.Driving mechanism analysis shows that MNDWI,NDVI and NDISI has a strong relationship with the formation of UHI.
作者
单芬芬
王凌菲
来祺然
SHAN Fenfen;WANG Lingfei;LAI Qiran(Zhejiang Huizhong Geographic Information Technology Co.,Ltd.,Hangzhou 311121,China;Siemens Healthineers Ltd.,Shanghai 200131,China;School of Sussex Artificial Intelligence,Zhejiang Gongshang University,Hangzhou 310018,China)
出处
《地理信息世界》
2022年第4期59-64,共6页
Geomatics World
关键词
城市热环境
遥感反演
剖面线
时序演化
杭州
urban thermal environment
remote sensing retrieval
profile line
time sequence evolution
Hangzhou
