2025-07-03 浙江大学（ZJU）
Spatiotemporal characteristics of China’s carbon and nitrogen emissions and their relative shares
＜関連情報＞
- https://www.zju.edu.cn/english/2025/0703/c19573a3066958/page.psp
- https://www.science.org/doi/10.1126/science.ads4105
中国における費用対効果の高い環境政策のための炭素と窒素の統合管理 Integrated carbon and nitrogen management for cost-effective environmental policies in China
Xin Xu, Xiuming Zhang, Yiyang Zou, Tianrun Chen, […] , and Baojing Gu
Science Published:5 Jun 2025
DOI:https://doi.org/10.1126/science.ads4105
Editor’s summary
Anthropogenic activities have greatly perturbed both the carbon and nitrogen cycles, with clear ecological consequences. Successfully management to minimize these impacts is vital to preserving the sustainability of environmental networks and human society. Focusing on China, Xu et al. developed an integrated model for quantifying carbon and nitrogen fluxes and their interactions. By managing them together in an integrated manner, large reductions of carbon and nitrogen could be achieved at lower abatement costs and greater societal benefits than if they were treated separately. —Jesse Smith
Abstract
Carbon and nitrogen are central elements in global biogeochemical cycles. To effectively manage carbon and nitrogen in China, we developed a comprehensive model for quantifying their fluxes, investigating their interplay across 16 human and natural subsystems. Between 1980 and 2020, nitrogen losses in China increased 2.3-fold and carbon emissions surged 6.5-fold. Integrated carbon and nitrogen management holds the potential for a 74% reduction in nitrogen losses to air and water and a 91% decrease in carbon emissions to the atmosphere by 2060. Compared with separate control of carbon or nitrogen, integrated management delivers an additional reduction of 1.8 million tons of nitrogen and 26.5 million tons of carbon by 2060, bringing out a 37% decrease in unit abatement cost and a net societal benefit of 1384 billion USD.
