本研究藉由都市熱島實測方法，進行台灣四大都會區氣溫分佈圖與都 市土地利用的概觀解析，並探討台北、台中、台南、以及高雄之都市熱島現象的 時空分佈特性。本論文同時針對盆地地形的台北與台中，以及海岸地形的台南與 高雄，進行都市熱島分佈特性之分析比較。由此發現，盆地地形的台北、台中都 會區與海岸地形的台南、高雄都會區，具有完全不同的都市熱島現象之表徵。海 岸地形的都會區，都市熱島現象受到海陸氣候極大的影響，使得白天熱島中心偏 向內陸，晚上熱島中心則偏向海邊。雖然台中與台北同屬盆地地形，但台北都會 區因具有大範圍、高度發展與複雜的商業、人為活動，而使得其都市熱島中心分 佈不像台中集中與明顯。同時本研究的實測結果顯示，綠地系統的規模大小，直 接影響綠地對於都市氣溫環境的改善效果。最後，本研究印證了都市熱島中心與 熱島強度之時間變動特性。由本研究所測得的最大熱島強度在台中、台南和高雄 分別為3.2℃、4.4℃和3.4℃，在台北高達4.9℃。

　　　　　The spatial and temporal features of urban heat islands of the four metropolitan cities, Taipei, Taichung, Tainan, and Kaohsiung, in Taiwan are studied by the temperature isotherm maps and the city contexts and textures. The results reveal that the different heat island phenomena of the four metropolises are distinct due to their differences in geography, population, urbanization, etc. For example, the heat island patterns of the coastal cities, Tainan and Kaohsiung, are affected by the sea and land breezes. Although Taipei and Taichung are both basin landforms, the distribution of the heat island in Taichung is centered and distinct, while that of Taipei is large and of a wide variety because of its high development and urbanization It is also clear from the results that in urban areas, large greened areas or parks play a key role in reducing temperatures. Finally, this research demonstrates the properties that the heat island centers and the heat island intensities vary with time. And the greatest heat island intensities of Taichung, Tainan, and Kaohsiung, found in the evenings, are 3.2℃, 4.4℃ and 3.4℃ respectively. Otherwise, in Taipei, the greatest intensity is found at noon as high as 4.9℃.