常態化差異植生指數應用於都市綠地品質管制之探討

Normalized Difference Vegetation Index Approach for Monitoring Urban Green Space Quality

都市綠地具有休閒遊憩、生態、環境品質改善等眾多功能，然而目前的都市計劃相關法規中，僅就都市綠地設置標準及屬「量」的綠覆率進行規範，並未對綠地品質進行管制。本研究目的在於建立都市綠地品質監測指標與提出管制構想，文中嘗試引用常態化差異植生植物指數（Normalized Difference Vegetation Index, NDVI）作為都市綠地品質管制指標，初步研究主題在於建構NDVI與都市土地使用類別之關聯，做為未來引用NDVI指數進行都市綠地品質管制及相關研究時之參考。本研究以台北市中正紀念堂為研究地區，引用1994年8月SPOT 3衛星影像，配合1994年7月拍攝之航空像片基本圖與台北市1995年繪製完成之地形圖，運用IMAGE 8.3影像處理軟體進行NDVI值求算，以ArcView地理資訊軟體進行土地使用數化、土地使用類別面積計算，之後進行土地使用類別面積函數轉換、相關性分析、複迴歸分析等。研究結果顯示十種土地使用類別對NDVI值之解釋力為54.4%，並發現土地使用分類精細度、土地使用輔助辨識材料會影響研究的精確度。建立之NDVI與土地利用迴歸式進一步整合總量管制、單元管制等觀念可應用於區域尺度、公園綠地尺度之綠地品質管制，並以台北市為例，提出綠地品質管制相關條文修正建議。 Urban green spaces contribute greatly to the quality of the living environment and the living quality of the inhabitants. However, appropriate indicators for monitoring the quality of green spaces are not applied in current urban planning regulations. The purpose of this paper is to understand the feasibility of setting up such indicators by means of NDVI. The National Chiang Kai-Shek Memorial Hall in Taipei City is chosen as the study area and the 1994 SPOT 3 satellite image, the 1994 aerial photographs, and the 1995 geographic maps of the area are used. A regression model is established for further discussion. The result of this study shows that the R-square of NDVI function is 54.4%, which means the relationship between NDVI and the land-use in the urban area needs further investigation. At the end of the study, we provide some suggestions for the modification of the planning related regulations of Taipei City based on the regression model and the concept of overall and unit control.