ENVIRONMENTAL IMPACT ASSESSMENT OF CO<sub>2</sub> EMISSIONS FOCUSING ON THE BACKGROUND DATA OF MATERIAL MANUFACTURING AND CONSTRUCTION STAGES OF STEEL-FRAMED LOGISTICS WAREHOUSE

Logistics warehouses are crucial infrastructure, and decarbonization is an urgent issue. This paper analyzes the supply chain and calculates CO2 emissions during the material manufacturing and construction phases of logistics warehouses. Although using multiple background data from different contexts is generally not recommended, this study carefully scrutinized conditions to ensure their cautious applications, allowing for comparative analysis. When using emission factors from different backgrounds, results can vary by up to two times, making it essential to scrutinize the effective range and system boundaries to select appropriate emission factors.