| Summary: | 碩士 === 中國文化大學 === 建築及都市計畫研究所 === 95 === An urban heat island (UHI) is an urban area which is significantly warmer than its surroundings. The main reason for UHI warming is buildings blocking thermal radiation to the sky. The energy balance is also affected by building plot types, as well as the land cover condition of each category considered. We will improve micro-climate and decrease the UHI warming of urban environment if we realize the relationship between land use patterns with thermal environment.
Furthermore, 23 urban blocks were selected for simulation of sensible heat flux from an infrared camera photos and analyzed by GIS, in order to resolve the isotherm chart. Therefore, we will get conclusions after the data proceeded by the isotherm charts, topographies, land use charts, and building height charts in GIS multivariate analyzed and overlapped.
This thesis is divided into five chapters as described below:
Chapter 1 explains the motivation and objectives of this study. It selected 23 residential canyons and examined the link between land use patterns and UHI. The main objectives are: (1) analyzing UHI warming is also affected by land use patterns on urban residential canyon; and (2) realizing the impact factors of UHI on urban residential canyon, etc.
Chapter 2 is the literature review of UHI and numerical simulation models of heat balance of the total surfaces on residential canyon.
Chapter 3 explains the instruments, steps of sampling survey, remote sensing and analytical methods; the main objective is to create a procedure for studying land use patterns and UHI.
In Chapter 4, it takes 23 urban residential canyons by sampling survey in Taipei city. This research takes GIS to analyze the factors of land use and micro-climate, such as building pattern, building coverage ratio, floor area ratio, building average height, road weight, temperature, wind speed etc., and then discuses the impact factors of UHI on urban residential canyon.
The conclusion and recommendations are provided in Chapter 5. The study conclusions that: (1) UHI exists in cites no matter air temperature or surface temperature. (2) The impact factors with UHI are analyzed by multiple regression analysis and factor analysis, which are cluster of buildings, land use intensity, warming of air, coverage of environment, patterns of residential canyon etc. (3) The natural material will decrease UHI and the imitation material will increase UHI.
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