气候变化领域集成服务门户(CCPortal): Cost-effective mitigation of nitrogen pollution from global croplands

CCPortal

DOI	10.1038/s41586-022-05481-8
	Cost-effective mitigation of nitrogen pollution from global croplands
	Gu, Baojing; Zhang, Xiuming; Lam, Shu Kee; Yu, Yingliang; van Grinsven, Hans J. M.; Zhang, Shaohui; Wang, Xiaoxi; Bodirsky, Benjamin Leon; Wang, Sitong; Duan, Jiakun; Ren, Chenchen; Bouwman, Lex; de Vries, Wim; Xu, Jianming; Sutton, Mark A.; Chen, Deli
发表日期	2023
ISSN	0028-0836
EISSN	1476-4687
卷号	613 期号:7942
英文摘要	Cropland is a main source of global nitrogen pollution(1,2). Mitigating nitrogen pollution from global croplands is a grand challenge because of the nature of non point-source pollution from millions of farms and the constraints to implementing pollution-reduction measures, such as lack of financial resources and limited nitrogen management knowledge of farmers3. Here we synthesize 1,521 field observations worldwide and identify 11 key measures that can reduce nitrogen losses from croplands to air and water by 30-70%, while increasing crop yield and nitrogen use efficiency (NUE) by 10-30% and 10-80%, respectively. Overall, adoption of this package of measures on global croplands would allow the production of 17 +/- 3 Tg (10(12) g) more crop nitrogen (20% increase) with 22 +/- 4 Tg less nitrogen fertilizer used (21% reduction) and 26 +/- 5 Tg less nitrogen pollution (32% reduction) to the environment for the considered base year of 2015. These changes could gain a global societal benefit of 476 +/- 123 billion US dollars (USD) for food supply, human health, ecosystems and climate, with net mitigation costs of only 19 +/- 5 billion USD, of which 15 +/- 4 billion USD fertilizer saving offsets 44% of the gross mitigation cost. To mitigate nitrogen pollution from croplands in the future, innovative policies such as a nitrogen credit system (NCS) could be implemented to select, incentivize and, where necessary, subsidize the adoption of these measures.
语种	英语
WOS研究方向	Multidisciplinary Sciences
WOS类目	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000909636500002
来源期刊	NATURE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/281500
作者单位	Zhejiang University; Zhejiang University; University of Melbourne; Jiangsu Academy of Agricultural Sciences; Beihang University; International Institute for Applied Systems Analysis (IIASA); Zhejiang University; Zhejiang University; Potsdam Institut fur Klimafolgenforschung; Utrecht University; Wageningen University & Research; Zhejiang University; UK Centre for Ecology & Hydrology (UKCEH)
推荐引用方式 GB/T 7714	Gu, Baojing,Zhang, Xiuming,Lam, Shu Kee,et al. Cost-effective mitigation of nitrogen pollution from global croplands[J],2023,613(7942).
APA	Gu, Baojing.,Zhang, Xiuming.,Lam, Shu Kee.,Yu, Yingliang.,van Grinsven, Hans J. M..,...&Chen, Deli.(2023).Cost-effective mitigation of nitrogen pollution from global croplands.NATURE,613(7942).
MLA	Gu, Baojing,et al."Cost-effective mitigation of nitrogen pollution from global croplands".NATURE 613.7942(2023).