局地气候分区体系视角下合肥市昼夜热环境研究
On Diurnal Thermal Environment in Hefei from the Perspec-tive of LCZ System
汤宝虎 1刘庆广 2王爱 3司敬敬 3胡鹏程 1王世杰 1王振宇1
作者信息
- 1. 合肥大学生物食品与环境学院,合肥 230601
- 2. 合肥大学旅游与会展学院,合肥 230601
- 3. 安徽建筑大学 建筑与规划学院,合肥 230009
- 折叠
摘要
以合肥市主城区为研究区,基于局地气候分区(local climate zone,LCZ)体系,使用Sentinel-2和landset-8影像,分析昼、夜不同LCZ类别间地表温度与城市形态之间的关系,以此研究合肥市地表热环境.结果表明:(1)构建研究区LCZ地图,在两种不同分类中占比最大分别为LCZ9与LCZB/C.(2)不同LCZ类别间的LST存在较为明显的差异,主要体现在建筑类别与自然类别间.昼夜间变化趋势较为一致,且夜间LCZ各类间温度变化幅度小于白天.(3)昼、夜温度温度变化均体现为高层<中层<低层,开阔建筑<密集建筑变化规律.(4)PCC分析表明LST与IBI与MNDWI分别呈现正负相关,相关性较强,且均为r(昼)>r(夜).
Abstract
Based on the local climate zone(LCZ)system,using Sentinel-2 and Landsat-8 imagery,this study analyzes the relationship between surface temperature and urban morphology in different LCZ categories during the day and night in the study area of the main urban area of Hefei City.The re-sults show that:(1)The LCZ map of the study area is constructed,and the largest proportion in the two different classifications is LCZ9 and LCZB/C.(2)There are obvious differences in LST between different LCZ categories,mainly between the building category and the natural category.The trend of day and night changes is consistent,and the temperature change amplitude in LCZ categories at night is smaller than that in the day.(3)The temperature change trend during the day and night is reflected as high-rise<middle-rise<low-rise,and open buildings<dense buildings.(4)The PCC analysis shows that LST is positively correlated with IBI and MNDWI,with strong correlation,and the correla-tion is r(day)>r(night).
关键词
局地气候分区/合肥市/热环境/遥感Key words
local climate zoning/Hefei City/thermal environment/remote sensing引用本文复制引用
出版年
2024
NETL
NSTL
万方数据