Synergies of reducing greenhouse gases and atmospheric nitrogen pollutants in China

Résumé fourni par la source

Climate change and environmental degradation driven by greenhouse gases (GHGs) and reactive nitrogen (Nr) emissions are escalating globally. As a major emitter of both, China faces dual challenges in mitigating GHGs and Nr to achieve carbon neutrality and sustainability. This study evaluates the potential and synergies of GHG (CO2, CH4, and N2O) and atmospheric Nr pollutant (NOx and NH3) mitigation based on a multi-model framework. Our findings indicate that with a co-control solution, China could reduce GHG emissions by up to 75% and atmospheric Nr pollutants by 60% in 2050, delivering societal benefits of US$959 billion—five times the implementation costs. When both GHG and Nr control strategies are fully deployed, industry-driven emission reductions will be dominant until around 2030, coinciding with China’s carbon peak target. However, after the carbon peak, agriculture-led reductions will enhance synergies in abatement potential and cost-effectiveness. This underscores the need to shift the priority of GHG and atmospheric Nr pollution control during post-peak, to boost zero carbon and clean air in China.

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