請用此 Handle URI 來引用此文件:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/74024
標題: | 應用生命週期評估都市代謝於城市型循環經濟 Applying Urban Metabolism Life Cycle Assessment in City Level Circular Economy |
作者: | Siang-Yu Huang 黃湘瑜 |
指導教授: | 闕蓓德 |
關鍵字: | 都市代謝,經濟系統物質流分析,生命週期評估,循環經濟,脫鉤, Urban metabolism,Economy-wide material flow analysis,Life cycle assessment,Circular economy,Decoupling, |
出版年 : | 2019 |
學位: | 碩士 |
摘要: | 都市作為資源消耗和廢棄物產生的熱點,是近年來重要的研究課題,都市代謝將都市模擬成有機體,透過理解都市程序下生態原則,有助於尋找方法仿效自然系統的效率和穩定性達到永續發展;循環經濟提倡取代過去的線性消費,應用封閉迴圈的生產模式於經濟系統中,過往研究多將都市代謝與循環經濟分開討論,但近年越來越多研究將其概念結合,強調更有效率使用資源、將廢棄物再運用,並維持都市環境品質。
本研究使用城市尺度經濟系統物質流分析,盤點案例地區臺北市都市代謝於2006-2017年總量及變動情形,指認資源消耗熱點,將分析結果導入生命週期評估都市代謝方法中,使資源用量轉變成環境衝擊,連結到資源消耗、人類健康及生態系統的危害,提供多面向的評估指標予政策決定者參考;研究中並使用脫鉤指數討論環境和經濟面向之分析;依據減量目標設定循環情境,分析循環型都市代謝下之環境衝擊,回顧臺灣相關資源使用政策,提出改善建議。 物質流分析中臺北市平均每年人均物質消費量為12.5噸,與使用經濟系統物質流分析研究之案例城市結果相近,但其城市自給率,並在化石燃料消費量較高;在生命週期評估中,平均每年人均環境衝擊為2.7kPt,主要來源為資源損害類別,尤以石化燃料和金屬礦物消耗衝擊最大;在循環型生命週期評估減量17%目標下,環境衝擊減少僅達8.2%,顯示應採用更有效之循環經濟策略;在脫鉤分析中,環境壓力以物質消費量及環境衝擊分析,經濟驅動力使用國民生產毛額分析,結果顯示資源消耗面有脫鉤現象,而環境衝擊面仍與經濟驅動力相關,因此在分析都市代謝時,宜納入生命週期評估,以確認都市的資源管理策略,為朝向強永續的面向執行。 Cities, as the hot spots of both resource consumption and waste generation, have become a critical research issue recently. Urban metabolism (UM) is a concept that takes an urban as a living organism, by comprehending ecological principles of processes in cities, UM is applied to improve resource efficiency and stability of cities. Circular economy promotes to replace the past linear consumption system with a circular cycle, which can combine with the UM to achieve the sustainable development of cities. In this study, economy-wide material flow analysis and life cycle assessment were used to evaluate the resource consumption and environmental impact between 2006-2017 in Taipei City. The approaches calculated the damage in resource, human health, and ecosystem categories, to help identify the aim for improvement of resource usage. Circular scenarios were built to investigate the environmental benefits under circular urban metabolism. Besides, this study also adopted decoupling indicators to discuss the performance between environment and economic aspects. The MFA result showed the average annual domestic material consumption (DMC) per capital was 12.5t, which could be attributed to the use of fossil fuel. The average annual environmental impact per capital was 2.7kPt from LCA, which caused by resource damage. Under the goal of 17% reduction of DMC, a decrease of 8.2% environmental impact was observed. Finally, the decoupling analysis trends of DMC and environmental impact are different, the last one tended to decouple while the later one was coupling. The reason might be the higher unit environment impact of the choosing materials. The integration of LCA in UM study can provide supports for resource management strategies for establishment of more sustainable and circular cities. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/74024 |
DOI: | 10.6342/NTU201902485 |
全文授權: | 有償授權 |
顯示於系所單位: | 環境工程學研究所 |
文件中的檔案:
檔案 | 大小 | 格式 | |
---|---|---|---|
ntu-108-1.pdf 目前未授權公開取用 | 3.48 MB | Adobe PDF |
系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。