gchange  > 气候变化事实与影响
DOI: 10.1002/2017GB005754
Scopus ID: 2-s2.0-85041024264
Title:
Quantifying the Limitation to World Cereal Production Due To Soil Phosphorus Status
Author: Kvakić M; , Pellerin S; , Ciais P; , Achat D; L; , Augusto L; , Denoroy P; , Gerber J; S; , Goll D; , Mollier A; , Mueller N; D; , Wang X; , Ringeval B
Source Publication: Global Biogeochemical Cycles
ISSN: 8866236
Indexed By: SCI ; SCI-E
Publishing Year: 2018
Volume: 32, Issue:1
pages begin: 143
pages end: 157
Language: 英语
Keyword: cropland ; diffusion ; global ; nutrient ; phosphorus ; yield gap
Scopus Keyword: agricultural modeling ; cereal ; crop production ; crop yield ; fertilizer ; phosphorus ; quantitative analysis ; spatial distribution ; yield response ; Africa ; Eastern Europe ; South America ; Triticum aestivum ; Zea mays
English Abstract: Phosphorus (P) is an essential element for plant growth. Low P availability in soils is likely to limit crop yields in many parts of the world, but this effect has never been quantified at the global scale by process-based models. Here we attempt to estimate P limitation in three major cereals worldwide for the year 2000 by combining information on soil P distribution in croplands and a generic crop model, while accounting for the nature of soil-plant P transport. As a global average, the diffusion-limited soil P supply meets the crop's P demand corresponding to the climatic yield potential, due to the legacy soil P in highly fertilized areas. However, when focusing on the spatial distribution of P supply versus demand, we found strong limitation in regions like North and South America, Africa, and Eastern Europe. Averaged over grid cells where P supply is lower than demand, the global yield gap due to soil P is estimated at 22, 55, and 26% in winter wheat, maize, and rice. Assuming that a fraction (20%) of the annual P applied in fertilizers is directly available to the plant, the global P yield gap lowers by only 5–10%, underlying the importance of the existing soil P supply in sustaining crop yields. The study offers a base for exploring P limitation in crops worldwide but with certain limitations remaining. These could be better accounted for by describing the agricultural P cycle with a fully coupled and mechanistic soil-crop model. ©2018. American Geophysical Union. All Rights Reserved.
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被引频次[WOS]:6   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Identifier: http://119.78.100.177/globalchange/handle/2HF3EXSE/77679
Appears in Collections:气候变化事实与影响

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Affiliation: ISPA, Bordeaux Sciences Agro, INRA, Villenave d'Ornon, France; Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Universite Paris-Saclay, Gif-sur-Yvette, France; Institute on the Environment, University of Minnesota, St. Paul, MN, United States; Department of Earth System Science, University of California, Irvine, CA, United States

Recommended Citation:
Kvakić M,, Pellerin S,, Ciais P,et al. Quantifying the Limitation to World Cereal Production Due To Soil Phosphorus Status[J]. Global Biogeochemical Cycles,2018-01-01,32(1)
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