The Impact of Spatial Form of Urban Architecture on the Urban Thermal Environment: A Case Study of the Zhongshan District, Dalian
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The correlation of spatial variation in land surface temperature with building height and density in Zhongshan District, Dalian, China, is investigated over the period 2003-2013. We utilize remote sensing data and multisource land-use data, which we evaluate using a combination of a single-window algorithm and correlation analysis. The results show that: 1) during 2003-2013, the number of high surface temperature regions increased by 4339 grid cells (out of a total of 53 601), with most of the high-temperature grid cells distributed along Jiefang Road and Zhongnan Road in the northern part of Zhongshan District. Ninety-eight percent of grid cells had temperature ranges of 293-309 K in July 2003, 296-310 K in August 2003, 295-308 K in July 2008, 296-311 K in August 2008, 305-314 K in July 2013, and 303-318 K in August 2013; 2) during 2003-2008, the number of low-rise buildings increased by 140%, and the number of multistory buildings increased by 100%. During 2008-2013, the number of buildings in all height categories remained relatively unchanged, with the exception of an 11% decrease in the number of low-rise buildings; 3) surface temperature showed weak correlation with building height (0.314, 0.346, and 0.361 in 2003, 2008, and 2013, respectively) but moderate correlation with building density (0.511, 0.533, and 0.563, respectively).
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