County-level air pollutant mitigation from China's staple crop production

文献类型： 外文期刊

第一作者： Liu, Yize

作者： Liu, Yize;Gao, Keer;Zhang, Lixiao;Hao, Yan;Li, Yunrui;Liang, Xia;Liang, Xia;Zhuang, Minghao;Zhuang, Minghao

作者机构：

关键词： Air pollutant emissions; County-level resolution; Ammonia mitigation; Straw usage; Minimum tillage

期刊名称：RESOURCES CONSERVATION AND RECYCLING （ 影响因子：10.9； 五年影响因子：12.7 ）

ISSN： 0921-3449

年卷期： 2025 年 221 卷

页码：

收录情况： SCI

摘要： Agricultural activities in crop production emit substantial air pollutants, impacting air quality, ecosystems, and public health. However, compiling a spatially explicit crop air pollutant emission inventory including all agricultural activities in field is urgent but still lacking. Here, we conducted a county-level air pollutant emission inventory and mitigation potential assessment for China's wheat, maize, and rice production in 2020. Results show that county-level air pollutant emission from agricultural activities shows large spatial heterogeneity, primarily driven by straw burning and fertilizer application. Regional management strategy combining better nitrogen management, eliminating straw burning, and minimum tillage, revealed the possibility of meeting the increasing demand in 2035 while reducing NH3, PM10, THC, NOx, and PM2.5 by 35 %, 64 %, 60 %, 66 %, and 84 %, and achieving near-zero emission for other pollutants. Our county-level air pollutant assessment fills gaps in entire production cycle evaluations, and provides valuable spatial insights for designing regionally targeted mitigation strategies.

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