globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.13618
论文题名:
Phosphorus in agricultural soils: drivers of its distribution at the global scale
作者: Ringeval B.; Augusto L.; Monod H.; van Apeldoorn D.; Bouwman L.; Yang X.; Achat D.L.; Chini L.P.; Van Oost K.; Guenet B.; Wang R.; Decharme B.; Nesme T.; Pellerin S.
刊名: Global Change Biology
出版年: 2017
卷: 23, 期:8
起始页码: 3418
结束页码: 3432
语种: 英语
英文关键词: agricultural soils ; biogeochemical cycles ; global scale ; modelling ; phosphorus
英文摘要: Phosphorus (P) availability in soils limits crop yields in many regions of the World, while excess of soil P triggers aquatic eutrophication in other regions. Numerous processes drive the global spatial distribution of P in agricultural soils, but their relative roles remain unclear. Here, we combined several global data sets describing these drivers with a soil P dynamics model to simulate the distribution of P in agricultural soils and to assess the contributions of the different drivers at the global scale. We analysed both the labile inorganic P (PILAB), a proxy of the pool involved in plant nutrition and the total soil P (PTOT). We found that the soil biogeochemical background corresponding to P inherited from natural soils at the conversion to agriculture (BIOG) and farming practices (FARM) were the main drivers of the spatial variability in cropland soil P content but that their contribution varied between PTOT vs. PILAB. When the spatial variability was computed between grid cells at half-degree resolution, we found that almost all of the PTOT spatial variability could be explained by BIOG, while BIOG and FARM explained 38% and 63% of PILAB spatial variability, respectively. Our work also showed that the driver contribution was sensitive to the spatial scale characterizing the variability (grid cell vs. continent) and to the region of interest (global vs. tropics for instance). In particular, the heterogeneity of farming practices between continents was large enough to make FARM contribute to the variability in PTOT at that scale. We thus demonstrated how the different drivers were combined to explain the global distribution of agricultural soil P. Our study is also a promising approach to investigate the potential effect of P as a limiting factor for agroecosystems at the global scale. © 2017 John Wiley & Sons Ltd
资助项目: Ringeval, B. ; ISPA, Bordeaux Sciences Agro, INRAFrance ; 电子邮件: bruno.ringeval@inra.fr
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60883
Appears in Collections:影响、适应和脆弱性

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作者单位: ISPA, Bordeaux Sciences Agro, INRA, Villenave d'Ornon, France; MaIAGE, INRA, Université Paris-Saclay, Jouy-en-Josas, France; Department of Earth Sciences–Geochemistry, Faculty of Geosciences, Utrecht University, Utrecht, Netherlands; Environmental Science Division, Oak Ridge National Laboratory, Oak Ridge, TN, United States; Department of Geography, University of Maryland, College Park, MD, United States; George Lemaître Centre for Earth and Climate Research, Earth & Life Institute, Université Catholique de Louvain, Louvain-la-Neuve, Belgium; Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France; Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China; Sino-French Institute for Earth System Science, College of Urban and Environmental Sciences, Peking University, Beijing, China; GAME-CNRM – UMR3589, CNRS/Météo-France, Toulouse, France

Recommended Citation:
Ringeval B.,Augusto L.,Monod H.,et al. Phosphorus in agricultural soils: drivers of its distribution at the global scale[J]. Global Change Biology,2017-01-01,23(8)
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