Extended Data Fig. 1: Flow chart for this study.
From: Impacts of global trade on cropland soil-phosphorus depletion and food security
We illustrate the process of calculating the soil-P budget at the production site (a) and constructing the soil-P deficits (SPD) database (b). The SPD is then integrated with the MRIO trade network (c) to assess the impact of food and non-food product consumption at the consumption site on the SPD of the production site (d). Subsequently, we combine this analysis with information on accumulated soil-P, natural soil-P level, soil properties and affected crops at the production site to determine the risk of soil-P depletion (e). The global agricultural trade network (ATN) centers around the agricultural supply chain indicated by the green arrows in the diagram. In contrast, the multi-regional input-output (MRIO) trade network employed in our analysis covers not only the impact of the agricultural supply chain (green arrows) but also that of the non-food supply chain, as illustrated by the red arrows. The cropland in the figure was drawn using Adobe illustrator.
