气候变化领域集成服务门户(CCPortal): Quantifying the Limitation to World Cereal Production Due To Soil Phosphorus Status

CCPortal

DOI	10.1002/2017GB005754
	Quantifying the Limitation to World Cereal Production Due To Soil Phosphorus Status
	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.
发表日期	2018
ISSN	0886-6236
EISSN	1944-9224
起始页码	143
结束页码	157
卷号	32 期号:1
英文摘要	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.
英文关键词	cropland; diffusion; global; nutrient; phosphorus; yield gap
语种	英语
scopus关键词	agricultural modeling; cereal; crop production; crop yield; fertilizer; phosphorus; quantitative analysis; spatial distribution; yield response; Africa; Eastern Europe; South America; Triticum aestivum; Zea mays
来源期刊	Global Biogeochemical Cycles
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/129865
作者单位	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
推荐引用方式 GB/T 7714	Kvakić M.,Pellerin S.,Ciais P.,et al. Quantifying the Limitation to World Cereal Production Due To Soil Phosphorus Status[J],2018,32(1).
APA	Kvakić M..,Pellerin S..,Ciais P..,Achat D.L..,Augusto L..,...&Ringeval B..(2018).Quantifying the Limitation to World Cereal Production Due To Soil Phosphorus Status.Global Biogeochemical Cycles,32(1).
MLA	Kvakić M.,et al."Quantifying the Limitation to World Cereal Production Due To Soil Phosphorus Status".Global Biogeochemical Cycles 32.1(2018).