2021年第26屆聯合國氣候變遷大會 (Conference of the Parties 26, COP26)中，197個與會國家為了減緩氣候變遷之影響，共同通過《格拉斯哥氣候公約》，今年3月國發會正式公布「臺灣2050淨零排放路徑及策略總說明」，提供至2050年淨零之軌跡與行動路徑，就能源、產業、生活轉型政策預期增長的重要領域制定行動計畫，落實淨零轉型目標，而營建業貢獻的碳排放量佔國家整體約12.5%。然而若要量化營建工程碳足跡，現階段台灣之產品碳足跡資料庫如環保署的碳足跡資料庫中九百多筆資料中，營建相關產品僅約五十幾筆，無法滿足工程規劃設計過程模擬不同工程方案的需求，然而受限於製程盤查法的特性，需收集產品製程詳細數據，因此數據取得需花費相當的成本與時間，因此僅靠製程盤查方法勢必無法在有限時間下取得足夠的營建工程產品碳足跡係數用以提供營建工程低碳規劃設計，因此現階段我國營建產業急需一套在有限時間與資源下，能系統性量化營建工程產品碳足跡係數的分析架構。因此本研究之目的為建立營建產品複合生命週期分析方法及產品碳足跡資料庫架構。在建立複合生命週期分析方法部分，將我國105年產業關聯表，利用工業產銷存動態調查資料進行矩陣擴增，並透過對產業公會或產品製造商訪談，蒐集產品規格與原料組成資料，再結合擴增後的產業關聯表，並引用能源局公告之能源平衡資料及環保署之能源燃燒排放資料，及調查產品平均價格資料，研究中以預拌混凝土與PVC止水帶，計算出各規格產品之碳足跡，由結果顯示利用複合生命週期分析法計算預拌混凝土產品碳足跡與環保署基於盤查分析法之數據相距約為10%。並將數據結果結合公共工程編碼建置營建工程碳足跡產品資料庫，以利設計施工單位於設計階段量化工程碳足跡，並可於設計階段思考減碳方式，以回應台灣淨零排放之需求。

In the 26th UN Climate Change Conference (COP26) in 2022, 197 participating countries jointly adopted the Glasgow Climate Pact to mitigate the impact of climate change and control the global temperature rise by 2℃. In Taiwan, National Development Council announced Taiwan's 2050 Net-Zero Emission Path and Strategies roadmap in March to formulate action plans for net-zero transformation policies in the energy, industry, and life areas. Among all the industries, the building and construction industry contributes significant carbon emissions annually. Therefore, quantifying the construction industry's carbon footprint is an essential step toward Nation's net zero emissions goal.
Lots of materials and products are used in construction engineering; however, limited product carbon footprint data are available. In Taiwan, Environmental Protection Agency's (EPA) carbon footprint database has only about fifty construction-related products out of 900s products in the database, which cannot support the goal of finding low carbon practices in the engineering design and construction planning process. Currently, the primary approach to obtaining a product's carbon footprint information is via process-based inventory analysis, a costly and timely process prohibiting fast and messy scale to generating a product's carbon footprint information.
Therefore, this study aims to propose a hybrid life cycle assessment framework to quantify construction-related products' carbon footprint and establish a "Construction Products Carbon Footprint Database" to support the planning and design of low roadway engineering.

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