摘 要 臺灣因經濟快速發展及高度工業化，能源使用增加近20 倍，工廠密度及單位面積能源的消耗率，使 臺灣地區受到熱島效應的影響範圍越趨顯著，可說是當前迫切的環境問題。熱島效應為都市環境結構多 以人工不透水層舖面取代原有自然地表覆蓋，造成環境失去氣溫平衡調節功能，使都市內部氣溫高於郊 區。隨空間資訊技術進步，遙測資訊具有高光譜態、多元尺度、多時序與資料獲取快速的優點，運用遙 測技術探討都市熱島效應現象日趨成熟，故本研究運用遙測影像探討臺中地區土地利用變化對熱島效應 空間分佈區位之影響。 本研究利用Landsat 衛星影像，進行多光譜資訊反演地表溫度。透過地表輻射溫度資訊反演，及都市 熱島強度值之計算，將熱島強度分為四種層級；再配合兩時期國土地用調查資料，以土地利用覆蓋面積 及變遷資訊獲得運算後各種用地之面積比例值，探討不同土地利用與熱島效應分布之情形。研究結果指 出，前後期影像所反演之地表亮度溫度平均值上升約2K，且臺中市中心溫度明顯高於郊區溫度；臺中市 熱島效應影響較大之區域其土地利用類別主要為人工鋪面及其他用地上，溫度值較高，分布於舊臺中市 區及西部，前後期之面積百分比增加約13%；對熱島效應影響較小之土地利用類別為植生及水體，溫度 值較低，大多分布於東部，其面積百分比前後期減少約9%。在工業區部分，加入產業類別總用電量比較 分析後發現，工業區之產業類別不同，其耗能量愈高，對於熱島效應影響愈大。

ABSTRACT In the past 40 years, Taiwan has high degree of industrialization and rapid economic development, resulting in the increase of energy use by nearly 20 times and higher plant density and energy consumption rate per unit area. Therefore, the heat island effect in Taiwan has become an urgent and significant issue about living environment. Urban heat island is mainly due to the artificial impermeable pavement used to replace the original ground surface. The replacement has caused unbalanced temperature and made higher temperature at urban areas than the rural ones. With the development of spatial information technology, the remote sensing has advantages of high spectral rate, multi-scale images, multi-temporal and fast data acquisition. The application of remote sensing has been focused on urban heat island study nowadays. In this research, the remote sensing was used to analyze the land-use change and industrial development, and their impacts on the effect of urban heat island in Taichung. In this study, the thermal infrared band images generated by the Landsat satellite were used to estimate the surface temperature change. National land use data was applied to analyze land use change of Taichung. The study also discussed the correlation of land use and urban heat island. The results indicated that land surface radiation temperature increased 2 Kelvin degrees in average within 14 years. In addition, the temperature at central area is obviously higher than rural area. The area which premier affected by heat island is increased 13%, which can be recognized as artificial land and some other uses where located at prior Taichung City and western part. On the other hand, the area which has less influence from heat island is decrease 9%, which can be recognized as vegetation land and water where located at eastern part. In the industrial zones, according to the comparison analysis of power consumption, we have found the industry has higher consumption of energy, also with more contribution of urban heat island effect.