Hierarchical driving factors of ammonia emissions from cropland in China

文献类型： 外文期刊

第一作者： Wang, Chen

作者： Wang, Chen;Zhang, Xiuming;Xu, Jianming;Gu, Baojing;Wang, Chen;Zhang, Xiuming;Feng, Yinan;Xu, Xiangrui;Liu, Hongbin;Wang, Chen;Xu, Jianming;Gu, Baojing

作者机构：

关键词： Ammonia emissions; Cropland; Driving factor; Socioeconomic factors

期刊名称：JOURNAL OF CLEANER PRODUCTION （ 影响因子：11.1； 五年影响因子：11.0 ）

ISSN： 0959-6526

年卷期： 2024 年 451 卷

页码：

收录情况： SCI

摘要： Ammonia (NH 3 ) emissions can have significant impacts on the environment, ecology, and human health, with a key source being fertilizer application in croplands. NH 3 emissions from croplands are influenced not only by natural factors but also by human management practices and social factors. However, our current understanding of the mechanisms and driving factors behind these emissions is limited. In this study, we conducted a quantitative analysis of the factors influencing NH 3 emissions using data from in -situ experiments and historical emissions data from 1980 to 2020. Our analysis revealed that fertilization management is the most significant contributor, accounting for 47% of NH 3 emission flux at the point level. Climate conditions and soil properties contribute 21% and 32%, respectively, to cropland NH 3 flux. At the county level, the contributions of management practices and socioeconomic factors such as farm size to NH 3 emission factors are nearly equal, with proportions of 51% and 49%, respectively. Advancements in agricultural mechanization and practices focused on reducing fertilizer use can achieve a 29% reduction in NH 3 emissions by 2030, all while maintaining rapid socioeconomic development. This highlights a strategy that can improve environmental quality, ensure Chinese grain production security, and deliver significant socioeconomic and ecological benefits.

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