近年來，全球各地因氣候變遷而導致環境災難的頻率正在逐年增加中，故「環境可持續性」是二十一世紀人類最重要的環境議題。 在當今的全球環境背景，要達到環境可持續性的目標，須突破許多傳統理論的侷限，才能因應新興議題的挑戰。首先，環境議題是跨國界、生態非領土的概念，全球環境議題已無法侷限在固定的領土概念下；再者，由於全球化過程中結構性的不公平所以導致義務的不對等性，也因此挑戰著跨國生態義務的公平性；最後，生態環境要具有可持續性，其生態系的生態功能必須維持在一定的可修復、循環的狀態下，才能達到可持續性，換言之，人類的存在必須是生態環境得以負荷的狀態下，才有永續性可言。 經由上述對於全球環境議題的探討，本文藉助多布森的生態公民身分理論，試圖在生態政治學觀點之上，以公民身分為進路，為跨國的生態義務尋找一個立論點，並且探究環境與公民身分結合的可能性，讓生態公民身分在自由民主的社會裡達到環境可持續性目標。 There have been so many disasters happening worldwide recently and each year we are facing a series of new threats to our life. So, the “environmental sustainability” could not but become the major environmental issue . Under the present pressure from the dilemma concerning the economical development and environmental protection , we have to make a breakthrough to solve the new environmental problems and thus to come up to the requirement of environmental sustainability. The environmental issues are far beyond the boundary of each nation. It is not a question of only one nation or only in a piece of land. And the process of global industrialization also brings structural inequality and inconformity of duty sharing. These factors makes it more difficult to solve the environmental problems fairly. If we want to find a good solution to the environmental problem, we must take to the environmental protection and sustainable development to make sure the ecological systems can come to a stable, remediable and recyclable situation. So the logistic provision for human life can’t therefore override the workload of the ecologic system. Based on the inquiries to the above global environmental issues, this thesis with the help of the theory of Dobson Andrew’s ecological citizenship tries to find an approach to answer the questions about the ecologic duty among nations. By studying the probability of the combination of the ecological citizenship and political citizenship, this thesis wishes to make it feasible to accomplish the goal of environmental sustainability.
