Spatio-temporal pattern estimation of anthropogenic CH4 emissions: A comparative study between Yangtze River Basin and Yellow River Basin, China

Le résumé fourni par la source

Methane (CH4) is gaining more attention as the second most important greenhouse gas. In this paper, anthropogenic CH4 emissions from the Yangtze and Yellow River basins in 2009, 2014 and 2019 were estimated using a bottom-up approach and analyse the spatiotemporal distribution. The results show that: 1) the total anthropogenic CH4 emissions in the two basins increased from 31.45 Tg to 33.25 Tg. The average annual emissions in the Yangtze basin are lower than those in the Yellow River basin; 2) CH4 emission sources are mainly coal mining and rice cultivation, they are the largest emission sources in the Yangtze River and Yellow River basins respectively; 3) the spatial distribution of regions with medium and high emissions tends to be concentrated. High per capita CH4 emissions and emission intensity occur in cities dominated by livestock and industry. The low value is found in cities with high urbanisation levels.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.