應用遙測技術來監測地表土地利用情況,具有即時觀測大範圍的土地之優勢,能夠迅速有效地獲得土地利用的資訊。經由分析不同時間取得的影像資料,可以找出土地利用的發展與變遷趨勢。本研究以多時段Landsat TM衛星影像對台北都會區進行綠地環境變遷之研究,利用多光譜影像監督式分類法萃取出攝影日期之綠地分佈情形,分析都會區內綠地的變遷狀況。從分類的成果中,可以監控1984至1995年之十一間,台北都會區內綠地環境變遷的概況。針對這十一年間重要的建設及地表利用紀錄,主要的研究方向為:(l)台北市區綠地環境變遷概況的分析;(2)基隆河截彎取直對鄰近綠地的影響;(3)五股溼地變遷與鄰近都會區發展之分析。從分析結果得知1984至1995間台北市區綠地變遷與行政區位置政策的推行有著極密切的關係,且重大水利建設對週遭綠地的環境亦有影響,此資訊可供都市計劃決策者或環境保護決策者參考。
The greatest advantage of utilizing remotely sensed image data is being capable of observing larger land section and its information of land use. By means of analyzing image data within certain period of time, it becomes easier to find out the development and transitional trend of land use. This study applied the Landsat TM satellite images obtained during 1984-1995 to analyze the transition of green land in urban area. The image data set enable us to supervise green land transition in Taipei within the ten years. According to important constructions and land use record, our main research directions are:(1)Analysis of green land transition in Taipei city; (2)The influences of river straitening project of Ki-long River to neighbor area; (3)Analysis of wet land transition and trend of urban development in Wu-Gu. From the transition of green land in Taipei city between 1984-1995, we could find the affinity between green, civil region, and the promotion of policies. Besides, the influences of past large hydraulic constructions to neighbor green land are also investigated.