國家尺度的空間規劃過去鮮少由空間結構元素的角度進行探究。基此，本研究根據系統化之空間元素檢驗台灣之國土空間結構。在考慮國家不同發展需求，本研究設計與評估各種不同的國土空間結構方案。本研究首先由實證性的角度，依據中心、走廊、地區、密度及功能五大空間元素，並同時運用空間統計，分析台灣國土空間結構的演變歷程。進而，本研究發展出五種台灣國土空間結構方案發展，並以多評準決策評選方案。方案評估結果顯示，較佳之方案為
「青同絡型空間結構」。最後，本研究據此建議可落實於現有區域與都市計畫體制的相關策略。

National spatial structure has seldom been studied from the aspect of spatial structure elements.

Hence， taking Taiwan as an example， this study examines national spatial structure based on a system of spatial elements. Alternative national spatial structures， considering national various development needs， are designed and evaluated. First， this empirical study analyzes the national spatial structure based on five spatial elements，namely node，
corridor， area， density and function， and utilizes spatial statistics to analyze the trend of Taiwan's national spatial structure. Second， five alternative national spatial structures of Taiwan are developed and evaluated by applying multiple criteria decision making (MCDM). Analytical results indicate that the "network spatial structure" scenario is the better alternative. To implement this option， this study proposes a set of policies that can be carried out through the existing regional and urban plans.