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Volume 10, issue 1
Earth Syst. Sci. Data, 10, 1-18, 2018
https://doi.org/10.5194/essd-10-1-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.
Earth Syst. Sci. Data, 10, 1-18, 2018
https://doi.org/10.5194/essd-10-1-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.

  08 Jan 2018

08 Jan 2018

Global and regional phosphorus budgets in agricultural systems and their implications for phosphorus-use efficiency

Fei Lun1, Junguo Liu2, Philippe Ciais3, Thomas Nesme4, Jinfeng Chang3, Rong Wang3, Daniel Goll3, Jordi Sardans5, Josep Peñuelas6, and Michael Obersteiner7 Fei Lun et al.
  • 1College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
  • 2School of Environmental Science and Engineering, South University of Science and Technology of China, Shenzhen 518055, China
  • 3IPSL – LSCE, CEA CNRS UVSQ, Centre d'Etudes Orme des Merisiers, 91191 Gif-sur-Yvette, France
  • 4Bordeaux Sciences Agro, Université de Bordeaux, UMR 1391 ISPA, CS 40201, 33175 Gradignan CEDEX, France
  • 5CREAF, Cerdanyola del Vallès 08193, Catalonia, Spain
  • 6CSIC, Global Ecology Unit CREAF-CSIC-UAB, Cerdanyola del Vallès 08193, Catalonia, Spain
  • 7International Institute for Applied Systems Analysis, 2361 Laxenburg, Austria

Abstract. The application of phosphorus (P) fertilizer to agricultural soils increased by 3.2% annually from 2002 to 2010. We quantified in detail the P inputs and outputs of cropland and pasture and the P fluxes through human and livestock consumers of agricultural products on global, regional, and national scales from 2002 to 2010. Globally, half of the total P inputs into agricultural systems accumulated in agricultural soils during this period, with the rest lost to bodies of water through complex flows. Global P accumulation in agricultural soil increased from 2002 to 2010 despite decreases in 2008 and 2009, and the P accumulation occurred primarily in cropland. Despite the global increase in soil P, 32% of the world's cropland and 43% of the pasture had soil P deficits. Increasing soil P deficits were found for African cropland vs. increasing P accumulation in eastern Asia. European and North American pasture had a soil P deficit because the continuous removal of biomass P by grazing exceeded P inputs. International trade played a significant role in P redistribution among countries through the flows of P in fertilizer and food among countries. Based on country-scale budgets and trends we propose policy options to potentially mitigate regional P imbalances in agricultural soils, particularly by optimizing the use of phosphate fertilizer and the recycling of waste P. The trend of the increasing consumption of livestock products will require more P inputs to the agricultural system, implying a low P-use efficiency and aggravating P-stock scarcity in the future. The global and regional phosphorus budgets and their PUEs in agricultural systems are publicly available at https://doi.pangaea.de/10.1594/PANGAEA.875296.

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We quantified in detail the P budgets in agricultural systems and PUE on global, regional, and national scales from 2002 to 2010. Globally, half of the total P inputs into agricultural systems accumulated in agricultural soils, with the rest lost to bodies of water. There are great differences in P budgets and PUE in agricultural systems on global, regional, and national scales. International trade played a significant role in P redistribution and P in fertilizer and food among countries.
We quantified in detail the P budgets in agricultural systems and PUE on global, regional, and...
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