Relation between Urban Volume and Land Surface Temperature: A Comparative Study of Planned and Traditional Cities in Japan
Relation between Urban Volume and Land Surface Temperature: A Comparative Study of Planned and Traditional Cities in Japan
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DOI：
10.3390/su10072366
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发表时间：
2018-07
期刊：
影响因子：
3.9
通讯作者：
M. Ranagalage;R. Estoque;H. H. Handayani-H.;Xinmin Zhang;Takehiro Morimoto;T. Tadono;Y. Murayama
中科院分区：
文献类型：
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作者：
M. Ranagalage;R. Estoque;H. H. Handayani-H.;Xinmin Zhang;Takehiro Morimoto;T. Tadono;Y. Murayama
水平二维（2D）城市土地利用方法不足以追踪城市环境的快速变化。因此，需要一种不同于传统地理方法的三维视角来理解复合城市多样性的机制。利用2010/2011年的遥感数据和地理空间工具和技术，我们量化了日本两个城市（规划城市筑波和传统城市土浦县）的城市体积（UV，由城市建筑体积（UBV）和城市绿化体积（UGV）组成），并检索和绘制了地表温度（LST）图。我们比较了两个城市(1)uvb和UGV及其与平均地表温度的关系；(2) UGV-UBV比值与平均地表温度的关系。筑波市的总uvb为7400万立方米，而土浦市的总uvb为8900万立方米。在UGV方面，筑波的总流量为5200万立方米，而土浦的总流量为2900万立方米。两市uvb与平均LST呈显著正相关（筑波：r2 = 0.31, p < 0.001；土浦区：r2 = 0.42, p < 0.001）， UGV与平均LST呈显著负相关（筑波：r2 = 0.53, p < 0.001；土浦区：r2 = 0.19, p < 0.001）。筑波市的UGV-UBV比值为54.9%，高于土浦市的28.7%。总体而言，传统城市（土浦县）的平均地表温度更为强烈。这可能是由于城市空间结构的差异。作为一个有计划的城市，筑波仍然是一个相对年轻的城市，拥有更分散的绿地和分布良好的建成区（到目前为止）。
The horizontal two-dimensional (2D) urban land use approach is not sufficient to trace rapid changes in urban environment. Hence, a three-dimensional (3D) approach that is different from the traditional geographical method is necessary to understand the mechanism of compound urban diversity. Using remote sensing data captured in 2010/2011 and geospatial tools and techniques, we quantified the urban volume (UV, consisting of urban built volume (UBV) and urban green volume (UGV)) and retrieved and mapped the land surface temperature (LST) of two cities in Japan (Tsukuba, a planned city, and Tsuchiura, a traditional city). We compared these two cities in terms of (1) UBV and UGV and their relationships with mean LST; and (2) the relationship of the UGV–UBV ratio with mean LST. Tsukuba had a total UBV of 74 million m 3 , while Tsuchiura had a total of 89 million m 3 . In terms of UGV, Tsukuba had a total of 52 million m 3 , while Tsuchiura had a total of 29 million m 3 . In both cities, UBV had a positive relationship with mean LST (Tsukuba: R 2 = 0.31, p < 0.001; Tsuchiura: R 2 = 0.42, p < 0.001), and UGV had a negative relationship with mean LST (Tsukuba: R 2 = 0.53, p < 0.001; Tsuchiura: R 2 = 0.19, p < 0.001). Tsukuba also had a higher UGV–UBV ratio of 54.9% in comparison with Tsuchiura, with 28.7%. Overall, the results indicate that mean LST was more intense in the traditional city (Tsuchiura). This could have been due to the difference in urban spatial structure. As a planned city, Tsukuba is still a relatively young city that has more dispersed green spaces and a well-spread (so far) built-up area.