城市绿地对北京市热岛强度的影响  

The impact of urban green land on heat island intensity in Beijing

作　　者：张旭萍 ZHANG Xuping(School of Geomatics and Urban Spatial Informatics,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)

机构地区：[1]北京建筑大学测绘与城市空间信息学院,北京100044

出　　处：《北京测绘》2023年第3期360-364,共5页Beijing Surveying and Mapping

基　　金：北京市科技计划(Z191100002419010)。

摘　　要：针对北京市热岛效应日益加重的问题,提出了基于陆地卫星8号(Landsat8)所携带的陆地成像仪(OLI)和热红外成像仪(TIRS)的Level-1数据反演地表温度、计算植被覆盖度的方法;并构建地表温度反演模型,探究北京市热岛效应与城市绿地面积关系。实验结果表明:高温区大部分集中在中心城区,并向周围的郊区的平原地带呈辐射状扩散,随着城区绿地面积增加,植被覆盖度上升的同时城区的热岛强度也呈下降趋势,说明城市绿地面积的增加与热岛效应呈负相关关系。In response to the increasing heat island effect in Beijing,a method was proposed to invert the land surface temperature and calculate the vegetation cover based on Landsat8 operational land imager(OLI)_thermal infrared sensor(TIRS)Level-1 data,and the temperature inversion of land surface temperature model was constructed.The relationship between heat island effect and urban green area in Beijing was investigated and analyzed.The experimental results showed that most of the high temperature areas were concentrated in the central urban area and spread radially to the surrounding suburban plains,and the heat island intensity in the urban area decreased while the vegetation coverage increases with the increase of urban green land area,indicating that the increase of urban green land area is negatively correlated with the heat island effect.

关 键 词：热岛效应 城市绿地 地表温度反演 Landsat8 OLI_TIRS 辐射传输方程法 

分 类 号：P237[天文地球—摄影测量与遥感]