在2021年聯合國氣候變遷大會(Conference of the Parties)的會議上，197個與會國家為避免氣候變遷，共同通過新協議：《格拉斯哥氣候公約》，此公約重申2015年《巴黎協定》的降溫目標，努力將全球平均氣溫上升的幅度控制在2℃之內，許多國家同意要在2050年達成近零碳排放的目標。而台灣的國家發展委員會在隔年3月公布了台灣2050近零排放路徑及策略總說明，這項宣示顯示台灣政府對於減少碳排放的承諾。而營建產業的碳排放量相較其他產業是相當高的，所以對營建產業進行減碳是刻不容緩的。
然而對道路工程進行碳足跡量化時，卻發現國內道路工程碳足跡產品類別規則相較於國際規範，國內規範的計算框架過於廣泛且執行困難，效果不佳。為此研究中提出一個優化的計算框架以增加效率、節省成本，並減輕量化的負擔，從而提升國內工程碳足跡量化的速度。加速工程碳足跡的量化能更迅速地找到排放熱點，進而有效地減少碳排放。研究中也利用新框架，分析了一個實際案例，找出案例中各個大項中的排放熱點，以此案例來檢視道路工程中各個大項內的碳排放熱點為何處，以此結果來顯示應將重點著重在哪些工項上，以減少量化時的負擔，同時展示雖然各大項中都還包含了14~32個工項，但如僅計算碳排放站比較高的幾個工項也能計算出該大項95%的工程碳排放量，以最有效率的方式對道路工程進行碳足跡的量化。另外考慮到對工程材料進行碳足跡量化時數據品質會有差異性，而國內又無符合，複合生命週期評估的碳足跡數據品質評分表，所以研究中也建立了一套複合生命週期評估的碳足跡數據品質評分表，以確保數據的品質和透明度，清楚的展示各個材料的碳係數數據品質評分。

In March 2022, Taiwan's National Development Council announced the "Overview of Taiwan's 2050 Near-Zero Emissions Path and Strategy", emphasizing the Taiwan government's commitment to reducing carbon emissions. Considering that the construction industry has a significant carbon footprint compared to other industries, carbon reduction in this industry must be prioritized.
However, when quantifying the carbon footprint of road construction, the study found that domestic road construction carbon footprint product category rules were too broad and challenging compared with international standards, leading to unsatisfactory results. This study introduces an optimized computational framework to improve efficiency, reduce costs, and ease the burden of quantification, thereby accelerating the pace of domestic carbon footprint quantification. Through this new framework, the study analyzes real-world cases to pinpoint emission hotspots within their main categories. The study clarifies the main carbon emission hotspots in various road engineering tasks, guides the focus on specific tasks, and simplifies quantification. The findings suggest that while each major category consists of 14~32 tasks, focusing on just a few high-emitting tasks can account for 95% of the category's total carbon emissions.
In addition, considering the variation in data quality during the quantification of the carbon footprint of building materials, and the absence of a scoring system suitable for hybrid life cycle assessment in Taiwan, this study established a Hybrid Life Cycle Carbon Footprint Data Quality Scoring Table. The table clearly indicates the carbon factor data quality score for each material, ensuring both data quality and transparency.

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