Abstract

We analyzed the temperature changes in cities and regions due to the lifting of the green belt in Busan Metropolitan City. The difference between the average temperature change in the summer surface due to the lifting of the green belt was analyzed in Local Spatial Autocorrelation Analysis (LISA) for the two points in 2000, when the green belt was fully preserved, and in 2018, when the recent record heatwave was recorded. Consequently, approximately 28.14% of the areas where the green belt was lifted from the cluster map became a hotspot. In Busan Metropolitan City, the changes in the soil quality, resulting from the development of new towns, creation of industrial complexes, reduction of green areas, and an increase in impervious areas due to largescale housing development projects following the lifting of the green belt, lead to the temperature rise in the city, thereby causing urban heat island phenomenon. This study contributes to the field by revealing that the urban heat island phenomenon can be affected in the long term depending on the urban development project involved in the lifting of the green belt. In addition to its original function of preserving the environment and preventing urban sprawl, the green belt can be a major urban planning tool for mitigating the rising urban heat island phenomenon caused by climate change, which demonstrates its policy implications.

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