監測植物分佈變化是自然環境資源管理之重要方法，本文目標是分析東南亞地區植生指標(1982-1993，1995-2000)之空間與時間變化，研究結果顯示有6個主成份因子解釋大於1%之東南亞地區植生指標變異，主成份因子1，2，及3分吸解釋62.2%，5.5%，及3.0%之東南亞地區植生指標變異，本文認為主成份因子1是”植物覆蓋”，主成份因子2及3是”季節變換”，本文使用群落分析方法研究東南亞地區植生指標，研究結果顯示有8個主要植物群落。

　　　　　Dection of changes in vegetation patterns is an important key to natural resource assessment. The aim of this research is to analyze spatial and temporal variations in Southeast Asian monthly maximum normalized difference vegetation index (NDVI) data for the period of 1982-2000, excluding 1994. There are 6 components that explain higher than 1% of the variance in the original 216 Southeast Asian monthly maximum NDVI time series images. Principal components 1, 2, and 3 explain 62.2%, 5.5%, and 3.0% of the variance in the original 216 Southeast Asian NDVI data. Principal component 1 was interpreted as the “vegetative cover” component. Principal components 2 and 3 were interpreted as the “seasonal change” components. Eight Southeast Asian vegetation clusters were generated in this research.