Agricultural trade impacts global phosphorus use and partial productivity

Bai, Z., Liu, L., Obersteiner, M. ORCID: https://orcid.org/0000-0001-6981-2769, Mosnier, A., Chen, X., Yuan, Z., & Ma, L. (2023). Agricultural trade impacts global phosphorus use and partial productivity. Nature Food 4 762-773. 10.1038/s43016-023-00822-w.

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Abstract

The spatio-temporal distribution, flow and end use of phosphorus (P) embedded in traded agricultural products are poorly understood. Here we use global trade matrices to analyse the partial factor productivity of P (output per unit of P input) for crop and livestock products in 200 countries and their cumulative contributions to the export or import of agricultural products over 1961-2019. In these six decades, the trade of agricultural P products has increased global partial factor productivity for crop and livestock production and has theoretically saved 67 Tg P in fertilizers and 1.6 Tg P in feed. However, trade is now at risk of contributing to wasteful use of P resources globally due to a decline in trade optimality, as agricultural products are increasingly exported from low to high partial factor productivity countries and due to P embedded in imported agricultural products mainly lost to the environment without recycling. Integrated crop-livestock production systems and P-recycling technologies can help.

Item Type:	Article
Research Programs:	Advancing Systems Analysis (ASA) Advancing Systems Analysis (ASA) > Exploratory Modeling of Human-natural Systems (EM)
Depositing User:	Luke Kirwan
Date Deposited:	09 Aug 2023 08:21
Last Modified:	09 Sep 2024 12:45
URI:	https://pure.iiasa.ac.at/18993

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