This study presents an estimation of greenhouse gas (GHG) emissions at the construction phase of a high-speed rail (HSR) line infrastructure from Osong to Gwangju (Korea), which became operational in 2015. The total GHG emissions were approximately 3.7 MtCO₂-equivalents (CO₂eq.), of which an approximately 92% originated from the use of materials, an indirect source. More specifically, this study quantified GHG emissions from construction modules covering earthworks, civil engineering activities (such as the construction of tunnels, viaducts, and bridges), railway tracks, passenger stations, and energy transmission and telecommunication systems for the entire HSR lines while identifying the key activity to each module. This study also includes an analytical study of dependency between GHG emissions and civil engineering works. Such an assessment initiative regarding GHG emissions generated from the construction of the HSR line infrastructure in Korea is the first on its own.

这项研究提出了从Osong到光州（韩国）的高铁（HSR）线路基础设施建设阶段的温室气体（GHG）排放量的估算，该基础设施已于2015年投入运营。温室气体总排放量约为3.7 MtCO ₂ -当量（CO ₂eq。），其中约92％来自间接使用材料。更具体地说，本研究对整个高铁线路中涵盖土方工程，土木工程活动（如隧道，高架桥和桥梁的建设），铁路轨道，客运站以及能源传输和电信系统的建筑模块的温室气体排放进行了量化每个模块的关键活动。该研究还包括对温室气体排放与土木工程之间的依存关系的分析研究。这种关于在韩国建设高铁线路基础设施而产生的温室气体排放的评估计划，尚属首次。