Chen Feiyu, Gu Xiao, Yu Haimiao, Zhang Xiaolin, Wang Yujie
School of Economics and Management, China University of Mining and Technology, Xuzhou, 221116, China.
College of Economics and Management, Taiyuan University of Technology, Taiyuan, 030024, China.
Environ Sci Pollut Res Int. 2023 May;30(21):59540-59553. doi: 10.1007/s11356-023-26658-2. Epub 2023 Apr 3.
Understanding the temporal and spatial characteristics of carbon dioxide (CO) emissions from municipal solid waste (MSW) and a quantitative evaluation of the contribution rate of the factors influencing the changes in CO emissions are important for pollution and emission reduction and the realization of the "double carbon" goal. This study analyzed the spatial and temporal evolution of waste generation and treatment based on panel data from 31 Chinese provinces over the past 15 years and then applied the logarithmic mean Divisia index (LMDI) model to study the driving factors of CO emissions from MSW. China's MSW production and CO emissions displayed a rising trend, and the overall CO emissions showed a geographical pattern of being high in the east and low in the west. Carbon emission intensity, economic output, urbanization level, and population size were positive factors that increased CO emissions. The most important factors driving CO emissions were carbon emission intensity and economic output, with cumulative contribution rates of 55.29% and 47.91%, respectively. Solid waste emission intensity was a negative factor in reducing CO emissions, with a cumulative contribution rate of -24.52%. These results have important implications for the design of policies to reduce CO emissions from MSW.
了解城市固体废物（MSW）二氧化碳（CO）排放的时空特征以及对影响CO排放变化的因素贡献率进行定量评估，对于污染减排和实现“双碳”目标具有重要意义。本研究基于中国31个省份过去15年的面板数据，分析了垃圾产生和处理的时空演变，然后应用对数平均迪氏指数（LMDI）模型研究了城市固体废物CO排放的驱动因素。中国的城市固体废物产量和CO排放量呈上升趋势，总体CO排放呈现出东高西低的地理格局。碳排放强度、经济产出、城市化水平和人口规模是增加CO排放的积极因素。推动CO排放的最重要因素是碳排放强度和经济产出，累计贡献率分别为55.29%和47.91%。固体废物排放强度是减少CO排放的负面因素，累计贡献率为-24.52%。这些结果对减少城市固体废物CO排放政策的设计具有重要意义。
