DOI: 10.1016/j.gloenvcha.2021.102282
论文题名: Influences of international agricultural trade on the global phosphorus cycle and its associated issues
作者: 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.
刊名: Global Environmental Change
ISSN: 9593780
出版年: 2021
卷: 69 语种: 英语
中文关键词: 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
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 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168308
Appears in Collections: 气候变化与战略
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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
Recommended Citation:
Lun F.,Sardans J.,Sun D.,et al. Influences of international agricultural trade on the global phosphorus cycle and its associated issues[J]. Global Environmental Change,2021-01-01,69