Contribution of Nitrogen Management to Greenhouse Gas Emission Reduction: A Case Study of China

DOI: 10.1021/acs.est.4c10935 Publication Date: 2025-05-01T18:21:48Z
ABSTRACT
Developing collaborative and effective strategies for reducing reactive nitrogen (Nr) greenhouse gas (GHG) emissions is key to maintaining human activities within planetary boundaries. Nitrogen (N) management not only promotes Nr emission pollution control but also influences GHG sources. Therefore, we constructed a nitrogen-carbon (N-C) coupled model link N metabolism with inventory at the national scale, revealing contributions of synergistic reduction. China was selected as case study. The results showed that from 2015 2020, N-metabolism system associated 1510 Mt carbon dioxide (CO2)eq yr-1 emissions, including CO2, methane, nitrous oxide, C sequestration, accounting 13.5% level. Adopting N-C could synergistically reduce N-associated by 42.1% (607.8 CO2 eq), suggesting Nr-GHG comitigation effects have been considerably underestimated. Specifically, most were balanced fertilizer use, manure management, food loss, waste reduction, garbage sorting, which may become priority future
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