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首页> 外文期刊>Environmental Monitoring and Assessment >Capturing urban heat island formation in a subtropical city of China based on Landsat images: implications for sustainable urban development
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Capturing urban heat island formation in a subtropical city of China based on Landsat images: implications for sustainable urban development

机译：基于Landsat图像的亚热带地区捕获城市热岛形成：对可持续城市发展的影响

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Land use/cover change is the main driving force of urban expansion which influences human-environment interactions. Generally, the formation of urban heat islands (UHIs) can be referred to as a negative "by-product" of urbanization. In the context of rapid urbanization, the present paper aims to capture the landscape changes and three patterns of urban expansion (i.e., infill, extension, and leapfrog), and provide a better understanding of the formation of the surface urban heat island (SUHI) in Dongguan, China, during the past 20+ years. Urban land increased from 28.87 x 10(3) ha in 1994 to 78.89 x 10(3) ha in 2005 and 101.05 x 10(3) ha in 2015, with a compound annual urban growth rate of 9.57% (1994-2005) and 2.51% (2005-2015), respectively. Based on the mean land surface temperature difference (Delta mean LST) between urban land (UL) and green space (GS), the SUHI intensity (SUHII) increased from 1.46 degrees C in 1994 to 2.32 degrees C in 2005 and 3.83 degrees C in 2015 in Dongguan. Overall, the Delta mean LST of urban areas increased from 2.61 degrees C (1994-2005) to 4.78 degrees C (2005-2015). The Delta mean LST between the city center and its surrounding areas decreased from 1994 to 2015, and the Delta mean LST between the city center and the suburbs gradually increased, primarily in 2015. In particular, both dense urban and the infill pattern of urban expansion had high mean LSTs in Dongguan, thus having negative impacts on sustainable urban development. The limited green space and open land should be strictly controlled or prohibited for transformation in urban areas. Particularly in dense regions, green roofs, green areas, and urban renewal actions could be considered for mitigating the urban heat island effect.
机译：土地使用/封面变化是影响人类环境互动的城市扩张的主要推动力。通常，城市热群（UHIS）的形成可以被称为城市化的负面的“副产品”。在快速城市化的背景下，本文旨在捕捉景观变化和三种城市扩张模式（即填充，延伸和跨越），并更好地了解地表城市热岛（Suhi）的形成在中国东莞，在过去20多年。 1994年，城市土地从1994年的28.87 x 10（3）公顷增加到2005年的78.89 x 10（3）公顷，2015年101.05 x 10（3）张HA，复合年度城市增长率为9.57％（1994-2005）和2.51％（2005-2015）分别。基于城市土地（UL）和绿地（GS）之间的平均土地表面温差（Delta平均LST），Suhi强度（Suhii）于1994年的1.46摄氏度增加到2005年的2.32摄氏度和3.83摄氏度2015年在东莞。总体而言，三角洲的平均城市地区的LST从2.61摄氏度增加到4.78摄氏度（2005-2015）。三角洲的意思是市中心及其周边地区之间的LST从1994年到2015年下降，达景意味着市中心与郊区之间的LST逐渐增加，主要是2015年。特别是茂密的城市和城市扩张的填充模式在东莞有高均值，因此对可持续城市发展产生负面影响。应严格控制或禁止在城市地区的转型控制或禁止有限的绿地和开放的土地。特别是在密集的区域，绿色屋顶，绿地和城市更新行动中可以考虑缓解城市热岛效果。

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