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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
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 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.

Citation: Lun, F., Liu, J., Ciais, P., Nesme, T., Chang, J., Wang, R., Goll, D., Sardans, J., Peñuelas, J., and Obersteiner, M.: Global and regional phosphorus budgets in agricultural systems and their implications for phosphorus-use efficiency, Earth Syst. Sci. Data, 10, 1-18, https://doi.org/10.5194/essd-10-1-2018, 2018.
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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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