气候变化领域集成服务门户(CCPortal): Food for thought: Lower-than-expected crop yield stimulation with rising CO2 concentrations

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DOI	10.1126/science.1114722
	Food for thought: Lower-than-expected crop yield stimulation with rising CO2 concentrations
	Long S.P.; Ainsworth E.A.; Leakey A.D.B.; Nösbsrger J.; Ort D.R.
发表日期	2006
ISSN	0036-8075
起始页码	1918
结束页码	1921
卷号	312 期号:5782
英文摘要	Model projections suggest that although increased temperature and decreased soil moisture will act to reduce global crop yields by 2050, the direct fertilization effect of rising carbon dioxide concentration ([CO2]) will offset these losses. The CO2 fertilization factors used in models to project future yields were derived from enclosure studies conducted approximately 20 years ago. Free-air concentration enrichment (FACE) technology has now facilitated large-scale trials of the major grain crops at elevated [CO2] under fully open-air field conditions. In those trials, elevated [CO2] enhanced yield by ∼50% less than in enclosure studies. This casts serious doubt on projections that rising [CO2] will fully offset losses due to climate change.
英文关键词	Approximation theory; Carbon dioxide; Climate change; Concentration (process); Crops; Fertilizers; Mathematical models; Moisture; Project management; Soils; Thermal effects; Crop yield; Free-air concentration enrichment (FACE); Agronomy; carbon dioxide; carbon dioxide enrichment; climate change; crop yield; fertilizer application; food availability; soil moisture; temperature effect; article; climate change; concentration (parameters); free air concentration enrichment; harvest; nonhuman; priority journal; seed fertility; soil moisture; technology; temperature; Atmosphere; Biomass; Carbon Dioxide; Crops, Agricultural; Fertilizers; Forecasting; Meta-Analysis; Nitrogen; Ozone; Photosynthesis; Poaceae; Sorghum; Soybeans; Temperature; Triticum; Water; Zea mays; Agronomy
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244573
作者单位	Department of Plant Biology, University of Illinois at Urbana Champaign, 1201 West Gregory Drive, Urbana, IL 61801, United States; Department of Crop Sciences, University of Illinois at Urbana Champaign, 1201 West Gregory Drive, Urbana, IL 61801, United States; Institute for Genomic Biology, University of Illinois at Urbana Champaign, 1201 West Gregory Drive, Urbana, IL 61801, United States; Photosynthesis Research Unit, U.S. Department of Agriculture, Agricultural Research Service, 1201 West Gregory Drive, Urbana, IL 61801, United States; Institute for Plant Sciences, ETH Zurich, 8902 Zurich, Switzerland
推荐引用方式 GB/T 7714	Long S.P.,Ainsworth E.A.,Leakey A.D.B.,et al. Food for thought: Lower-than-expected crop yield stimulation with rising CO2 concentrations[J],2006,312(5782).
APA	Long S.P.,Ainsworth E.A.,Leakey A.D.B.,Nösbsrger J.,&Ort D.R..(2006).Food for thought: Lower-than-expected crop yield stimulation with rising CO2 concentrations.Science,312(5782).
MLA	Long S.P.,et al."Food for thought: Lower-than-expected crop yield stimulation with rising CO2 concentrations".Science 312.5782(2006).