气候变化领域集成服务门户(CCPortal): Influences of international agricultural trade on the global phosphorus cycle and its associated issues

CCPortal

DOI	10.1016/j.gloenvcha.2021.102282
	Influences of international agricultural trade on the global phosphorus cycle and its associated issues
	Lun F.; Sardans J.; Sun D.; Xiao X.; Liu M.; Li Z.; Wang C.; Hu Q.; Tang J.; Ciais P.; Janssens I.A.; Obersteiner M.; Peñuelas J.
发表日期	2021
ISSN	9593780
卷号	69
英文摘要	Industrial phosphorus (P) fertilizer has substantially improved global food production, but has also led to environmental impacts. Intensive global agricultural trade has increased and the impacts of trade on aggravating or alleviating future P scarcity must be examined, especially for the most vulnerable countries. We combined data to estimate the global P trade among countries and its impacts on global P flows, based on global agricultural trade, cropland soil P budgets and crop P fertilizer footprints (the amount of industrial P fertilizer applied for producing one unit of P in the harvested crop). The global agricultural P trade represented a fraction of 16% of P in harvested crops in 2014, half of which was exported from the United States of America, Brazil and the European Union and one fifth imported by China. Virtual P fertilizer flows (about 2.60 Tg P y-1) referred to industrial P fertilizers applied to traded crops by exporting countries; thus, 1/3 of global virtual P fertilizer flows were associated with the international soybean trade. P use efficiency (PUE), the ratio of the harvested crop-P to the total external P inputs, is a larger problem for tropical than temperate countries. Global crop trade had brought in a net 0.2 Tg P y-1 savings of industrial P fertilizers globally, compared to crop production in export and import countries. >0.50 Tg y-1 of the gross global accumulation of soil P and P in freshwater were associated with global agricultural trade. Global PUE, however, could be improved considerably, and thus global cooperation and improving PUE could help to solve the problem of future P scarcity. Vulnerable countries should also propose urgent national plans to address their own situations of P scarcity or low PUE. © 2021 Elsevier Ltd
关键词	crop P fertilizer footprint global P cycle International agricultural trade P use efficiency virtual P fertilizer flows
英文关键词	agricultural trade; crop plant; crop production; European Union; fertilizer application; nutrient use efficiency; phosphorus; phosphorus cycle; temperature effect; Brazil; China; United States; Glycine max
语种	英语
来源期刊	Global Environmental Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/205519
作者单位	College of Land Science and Technology, China Agricultural University, Beijing, 100193, China; CREAF, Cerdanyola del Vallès 08193, Catalonia, Spain; CSIC, Global Ecology Unit CREAF-CSIC-UAB, Cerdanyola del Vallès 08193, Catalonia, Spain; IPSL – LSCE, CEA CNRS UVSQ, Centre d'Etudes Orme des Merisiers, Gif-sur-Yvette, 91191, France; University of Antwerp, Wilrijk, 2610, Belgium; International Institute for Applied Systems Analysis, Laxenburg, 2361, Austria
推荐引用方式 GB/T 7714	Lun F.,Sardans J.,Sun D.,et al. Influences of international agricultural trade on the global phosphorus cycle and its associated issues[J],2021,69.
APA	Lun F..,Sardans J..,Sun D..,Xiao X..,Liu M..,...&Peñuelas J..(2021).Influences of international agricultural trade on the global phosphorus cycle and its associated issues.Global Environmental Change,69.
MLA	Lun F.,et al."Influences of international agricultural trade on the global phosphorus cycle and its associated issues".Global Environmental Change 69(2021).