The import of virtual nutrients meant the conservation of domestic nutrient resources, especially P (due to the low cost-effectiveness of recycling through natural cycling, Fig. S6). For instance, the imports to Africa in 2016 embedded 0.37 Tg of virtual P, meaning that the sending system ...
reaching 17% of total global P-fertilizer input. In addition to the flows of physical N and P in agricultural products, the influence of trade on global N and P cycling is also connected with virtual nutrient flows20. Nutrients required ...
Mathur, R., andR. L. Dennis. 2000. A regional modeling analysis of reduced nitrogen cycling in the eastern United States p. 85–88.InConference Proceedings: American Meteorologic Society, Preprints of the Symposium on Atmospheric Chemistry: Issues in the 21st Century, 9–14 January 2000, Long...