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Remote Sensing Technology and Application  2022, Vol. 37 Issue (6): 1492-1503    DOI: 10.11873/j.issn.1004-0323.2022.6.1492
    
Influence of Urban Buildings Forms on Land Surface Temperature： From a Gradient Perspective
Leiqi Tan1(),Liang Zhou1,2,3(),Li Li3,Bo Yuan1,4,Fengning Hu1,5
1.Faculty of Geomatics，Lanzhou Jiaotong University，Lanzhou 730070，China
2.Key Laboratory of Urban Land Resources Monitoring and Simulation of Ministry of；Natural Resources，Shenzhen 518034，China
3.Lanzhou Branch Chinese Academy of Sciences，Lanzhou 73000，China
4.Gansu Provincial Engineering Laboratory for National Geographic State Monitoring，Lanzhou 730070，China
5.National-Local Joint Engineering Research Center of Technologies and Applications for National；Geographic State Monitoring，Lanzhou 730070，China
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Abstract  

To explore the gradient and difference of the influence of different urban building forms on LST， Xi 'an， Zhengzhou， Jinan as the research area， based on Landsat 8 TIRS images and urban 3D building data. Based on the multiple linear regression model， the influences of building form on LST in different seasons in the three cities were analyzed and the differences were compared ：（1） the cities with the largest influence on LST in summer and winter were Xi 'an （R2=0.414） and Jinan （R2=0.300）. The building coverage rate and average building height have the greatest impact on LST in summer and winter， respectively， with positive and negative impacts. （2） After the gradient classification of building coverage， it is found that when the coverage rate is less than 20%， the building volume density has a strong cooling effect on the three cities； When the coverage rate is 20%—40%， the average building height significantly reduces the surface temperature of the three cities. When the coverage rate is 40%—60%， the sky visible factor has a certain warming effect on the three cities， when the coverage rate is greater than 60%， the average building height greatly reduces the surface temperature of Jinan. （3） The average surface temperature of low-rise buildings in Xi 'an， Jinan and Zhengzhou is 9.5 ℃， 7.7 ℃ and 6.1 ℃， respectively. The surface temperature of the three cities shows a downward trend from low-rise to high-rise， and the surface temperature of Xi 'an is higher than that of Zhengzhou and Jinan in each gradient. The research shows that rational planning of urban building form is beneficial to alleviate the phenomenon of high surface temperature in central cities.
Key words:  Land surface temperature      Urban form      Building indicators      Urbanization      Spatial distribution     
Received:  14 September 2021      Published:  15 February 2023
ZTFLH:  TP79  
Corresponding Authors:  Liang Zhou     E-mail:  tanleiqi888@163.com;zhougeo@126.com
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Leiqi Tan
Liang Zhou
Li Li
Bo Yuan
Fengning Hu

Cite this article: 

Leiqi Tan,Liang Zhou,Li Li,Bo Yuan,Fengning Hu. Influence of Urban Buildings Forms on Land Surface Temperature： From a Gradient Perspective. Remote Sensing Technology and Application, 2022, 37(6): 1492-1503.

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http://www.rsta.ac.cn/EN/10.11873/j.issn.1004-0323.2022.6.1492     OR     http://www.rsta.ac.cn/EN/Y2022/V37/I6/1492

Fig.1  The Study Area
Fig.2  Spatial distribution of land surface temperature in summer and winter in Xi ‘an， Zhengzhou and Jinan
Fig.3  Contribution degree of building index to surface temperature in Winter and summer in Xi ‘an， Zhengzhou and Jinan
指标计算公式描述
平均建筑高度（AH）AH=∑i=1nHi/n表示楼房平均高度，Hi 代表分析单元内第i个建筑高度，n代表分析单元内建筑个数
建筑覆盖率（BCR）BCR=∑i=1nSi/SAU×100%表示水平方向建筑的密集程度，Si 代表第i个建筑的基地面积，SAU 代表分析单元面积
建筑容积率（FAR）FAR=∑i=1nSiFi/SAU表示单位面积上的建筑容量，Si 代表第i个建筑基地面积，Fi 代表建筑楼层数，SAU 代表分析单元面积
平均建筑体积（AV）AV=∑i=1nVi/n表示平均建筑体积，Vi 代表分析单元内第i个建筑的体积，n代表建筑个数
建筑体积密度（BVD）BVD=∑i=1nVi/SAU表示一定区域内建筑密度指数，Vi 代表第i个建筑体积，n代表建筑个数，SAU 代表分析单元面积
天空可视因子（SVF）在RStudio中利用horizon和raster模块进行计算表示测量天空在给定点的周围环境遮挡程度，值在0-1之间
Table 1  Building morphology parameters and description
Fig.4  Relationship between landscape index and land surface temperature under BCR gradient grade
Fig.5  Characteristics of surface temperature distribution under gradient grade of average building height
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