| 研究実績の概要 |
For FY 2016, the main focus of the study was on a comparative analysis of the social-ecological status of the three cities. Proxy social-ecological indicators were used, such as the fraction of impervious surface (social) and the fraction of green space (ecological). Land surface temperature (LST) was used as an indicator for the negative impact of urbanization in the context of the urban heat island (UHI) phenomenon. Remote sensing data and GIS techniques were used to facilitate the comparative analysis. The details of the study can be found in Estoque RC, Murayama Y, Myint S (2017) Effects of landscape composition and pattern on land surface temperature: An urban heat island study in the megacities of Southeast Asia. Science of the Total Environment, 577, 349-359. In brief, the analysis revealed that, in Bangkok, the mean LST of impervious surface was 2.2 °C higher than the mean LST of green space. In Jakarta and Manila, it was 2.9 °C and 3.7 °C higher, respectively. On average, the mean LST of impervious surface is about 3 °C higher than that of green space, highlighting the important role of green spaces in mitigating UHI effects, an important urban ecosystem service. The study recommends that the density and spatial pattern of urban impervious surfaces and green spaces be considered in sustainable landscape and urban planning so that these cities can have healthier and more comfortable living urban environments.
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