气候变化领域集成服务门户(CCPortal): Global phosphorus flows through agricultural trade

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DOI	10.1016/j.gloenvcha.2018.04.004
	Global phosphorus flows through agricultural trade
	Nesme T.; Metson G.S.; Bennett E.M.
发表日期	2018
ISSN	0959-3780
起始页码	133
结束页码	141
卷号	50
英文摘要	The global phosphorus cycle has been transformed in recent decades through increased use of mineral phosphorus fertilizer in agriculture and losses to water bodies, leading to risks of fossil phosphorus resource depletion and freshwater eutrophication. By moving phosphorus resources across world regions, international trade of agricultural products (food, feed, fiber and fuel) may contribute to these changes in the global phosphorus cycle, including critical nutrient imbalances. However, we lack a comprehensive, quantitative understanding of the role of agricultural trade in the global phosphorus cycle. By combining detailed data on international trade and the phosphorus content of agricultural products, we demonstrate that phosphorus flows through trade increased nearly eight-fold from 0.4 Tg P/yr in 1961 to 3.0 Tg P/yr in 2011, leading to an increase in the fraction of phosphorus taken up by crops that is subsequently exported from 9% in 1961 to 20% in 2011. The P flows in traded agricultural products was equivalent to 27% of the P traded in mineral fertilizers in 2011. Agricultural P flows were mostly driven by trade of cereals, soybeans and feed-cakes, with 28% of global phosphorus traded in human food, 44% in animal feed and 28% in crops for other uses in 2011. We found a strong spatial pattern in traded phosphorus in agricultural products, with most flows originating from the Americas and ending in Western Europe and Asia, with large amounts of phosphorus moving through trade within Western Europe, in strong contrast with the pattern of the mineral P fertilizer trade. We demonstrate that international trade of agricultural products has affected the domestic phosphorus cycle within many countries, making phosphorus exporters susceptible to the volatility of the mineral phosphorus fertilizer market. Overall, these results highlight the importance of trade as key component of the global phosphorus cycle. © 2018
英文关键词	Anthropocene; Global food security; International trade; Phosphorus cycle
学科领域	agricultural trade; Anthropocene; eutrophication; food security; freshwater environment; international trade; phosphorus; phosphorus cycle; Asia; Central America; North America; South America; Western Europe; Animalia; Glycine max
语种	英语
scopus关键词	agricultural trade; Anthropocene; eutrophication; food security; freshwater environment; international trade; phosphorus; phosphorus cycle; Asia; Central America; North America; South America; Western Europe; Animalia; Glycine max
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/117143
作者单位	Bordeaux Sciences Agro, Univ. Bordeaux, UMR 1391 ISPA, Gradignan Cedex33175, France; INRA, UMR 1391 ISPA, Villenave d'Ornon Cedex33882, France; McGill School of Environment, McGill University, Montreal, Quebec, Canada; Department of Natural Resource Sciences, McGill University, Sainte Anne de Bellevue, Montreal, Quebec, Canada; Division of Theoretical Biology, Department of Physics, Chemistry & Biology, Center for Climate Science and Policy Research (CSPR), Linköping University, Linköping, 581 83, Sweden; National Research Council, National Academies of Science, Washington, DC 20001, United States; School of the Environment, Washington State Univ., Vancouver, WA 98686, United States
推荐引用方式 GB/T 7714	Nesme T.,Metson G.S.,Bennett E.M.. Global phosphorus flows through agricultural trade[J],2018,50.
APA	Nesme T.,Metson G.S.,&Bennett E.M..(2018).Global phosphorus flows through agricultural trade.Global Environmental change,50.
MLA	Nesme T.,et al."Global phosphorus flows through agricultural trade".Global Environmental change 50(2018).