In order to actively promote the construction of low-carbon universities, taking the Yanyuan Campus of Peking University as a case study, we utilized the carbon emission factor method to calculate the total campus carbon emissions for 2023. The results are as follows. Firstly, total carbon emissions of Peking University main campus for 2023 exceeded 250000 tons, with Scope 1 (direct emissions) accounting for 17.20%, Scope 2 (indirect emissions from purchased energy) for 55.31%, and Scope 3 (other indirect emissions) for 27.49%. Secondly, compared with the carbon emissions in 2009, Scope 1 and Scope 2 carbon emissions increased by 16.76%, while per capita carbon emissions decreased by 19.10%. Based on the calculated carbon emission scenarios, we propose carbon reduction recommendations targeting the three major sources of carbon emissions at Peking University main campus — energy consumption, transportation, and food consumption. It is estimated that the potential to reduce carbon emissions in energy consumption is more than 30%, more than 5% in transportation, and more than 3% in food consumption. The total carbon reduction potential in these three areas is close to 40%, equivalent to over 120000 tons of carbon emissions annually. 

为积极推进低碳高校建设, 以北京大学燕园校区为例, 采用碳排放因子法核算2023年校园全范围碳排放。结果表明: 1) 北京大学校本部2023年碳排放超过25万吨, 其中直接排放(Scope 1)占17.20%, 外购能源间接排放(Scope 2)占55.31%, 其他间接排放(Scope 3)占27.49%; 2) 与2009年对比, Scope 1与Scope 2碳排放增加16.76%, 对应人均碳排放下降19.10%。基于碳排放场景的核算结果, 针对北京大学校本部目前最主要的3项碳排放源(直接和间接能耗、交通以及食物消费能耗)提出碳减排建议, 估算能耗碳减排的潜力超过30%, 交通碳减排的潜力超过5%, 食物消费全生命周期碳减排的潜力超过3%, 总碳减排潜力接近40%, 对应碳减排量每年超过12万吨。