文献类型： 外文期刊

作者： Wang, Chen ¹ ; Liu, Zehui ³ ; Zhang, Xiuming ¹ ; Zhang, Lin ³ ; Zhou, Feng ⁴ ; Ti, Chaopu ⁵ ; Adalibieke, Wulahati ⁴ ; Peng, Lingyun ⁵ ; Zhan, Xiaoying ⁶ ; Reis, Stefan ⁷ ; Liu, Hongbin ¹⁰ ; Zhu, Zhiping ¹¹ ; Dong, Hongmin ¹¹ ; Xu, Jianming ¹ ; Gu, Baojing ¹ ;

作者机构： 1.Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou 310058, Peoples R China

2.Zhejiang Univ, Policy Simulat Lab, Hangzhou 310058, Peoples R China

3.Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Lab Climate & Ocean Atmosphere Studies, Beijing 100871, Peoples R China

4.Peking Univ, Coll Urban & Environm Sci, Sino France Inst Earth Syst Sci, Lab Earth Surface Proc, Beijing 100871, Peoples R China

5.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China

6.Chinese Acad Agr Sci, Agr Clean Watershed Res Grp, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China

7.UK Ctr Ecol & Hydrol, Bush Estate, Midlothian EH26 0QB, Scotland

8.Univ Exeter, Sch Med, European Ctr Environm & Human Hlth, Truro TR1 3HD, England

9.Univ Edinburgh, Sch Chem, Edinburgh EH9 3BF, Scotland

10.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Minist Agr, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China

11.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China

12.Zhejiang Univ Technol, Coll Environm, Hangzhou 310032, Zhejiang, Peoples R China

关键词： ammonia emissions; cropland; nitrogen deposition; cost-benefitanalysis

期刊名称：ENVIRONMENTAL SCIENCE & TECHNOLOGY （ 影响因子：11.3； 五年影响因子：12.4 ）

ISSN： 0013-936X

年卷期： 2025 年 59 卷 10 期

页码：

收录情况： SCI

摘要： Atmospheric ammonia (NH3) has multiple impacts on the environment, climate change, and human health. China is the largest emitter of NH3 globally, with the dynamic inventory of NH3 emissions remaining uncertain. Here, we use the second national agricultural pollution source censuses, integrated satellite data, 15N isotope source apportionment, and multiple models to better understand those key features of NH3 emissions and its environmental impacts in China. Our results show that the total NH3 emissions were estimated to be 11.2 +/- 1.1 million tonnes in 2020, with three emission peaks in April, June, and October, primarily driven by agricultural sources, which contributed 74% of the total emissions. Furthermore, employing a series of quantitative analyses, we estimated the contribution of NH3 emissions to ecosystem impacts. The NH3 emissions have contributed approximately 22% to secondary PM2.5 formation and a 16.6% increase in nitrogen loading of surface waters, while ammonium deposition led to a decrease in soil pH by 0.0032 units and an increase in the terrestrial carbon sink by 44.6 million tonnes in 2020. Reducing agricultural NH3 emissions in China would contribute to the mitigation of air and water pollution challenges, saving damage costs estimated at around 22 billion US dollars due to avoided human and ecosystem health impacts.