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Earth System Science Data The Data Publishing Journal
https://doi.org/10.5194/essd-2017-41
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
 
06 Jun 2017
Review status
This discussion paper is a preprint. A revision of this manuscript was accepted for the journal Earth System Science Data (ESSD) and is expected to appear here in due course.
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 Environment Sciences, China Agricultural University, Beijing 100193
2School of Environmental Science and Engineering, South University of Science and Technology of China, Shenzhen, 518055, China
3PSL – 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, at global, regional, and national scales from 2002 to 2010. Globally, half of the total P input (21.3 Tg P yr−1) 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 of 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, versus increasing P accumulation in Eastern Asia. European and North American pasture had a soil P deficit because 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 recycling of waste P. The trend of increasing consumption of livestock products will require more P inputs to the agricultural system, implying a low P-use efficiency aggravating the P stocks scarcity in the future. The global and regional phosphorus budgets and their PUEs in agricultural systems is 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 Discuss., https://doi.org/10.5194/essd-2017-41, in review, 2017.
Fei Lun et al.

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Global and regional phosphorus budgets in agricultural systems and their implications for phosphorus-use efficiency
F. Lun, J. Liu, P. Ciais, T. Nesme, J. Chang, R. Wang, D. Goll, J. Sardans, J. Penuelas, and M. Obersteiner
https://doi.pangaea.de/10.1594/PANGAEA.875296
Fei Lun et al.

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