globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.14077
Scopus记录号: 2-s2.0-85042413014
论文题名:
Comparison of crop yield sensitivity to ozone between open-top chamber and free-air experiments
作者: Feng Z.; Uddling J.; Tang H.; Zhu J.; Kobayashi K.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期:6
起始页码: 2231
结束页码: 2238
语种: 英语
英文关键词: crop yield ; FACE ; open-top chamber ; ozone ; sensitivity
Scopus关键词: assessment method ; comparative study ; crop yield ; experimental study ; food production ; open-top chamber ; ozone ; sensitivity analysis ; Glycine max ; Triticum aestivum
英文摘要: Assessments of the impacts of ozone (O3) on regional and global food production are currently based on results from experiments using open-top chambers (OTCs). However, there are concerns that these impact estimates might be biased due to the environmental artifacts imposed by this enclosure system. In this study, we collated O3 exposure and yield data for three major crop species—wheat, rice, and soybean—for which O3 experiments have been conducted with OTCs as well as the ecologically more realistic free-air O3 elevation (O3-FACE) exposure system; both within the same cultivation region and country. For all three crops, we found that the sensitivity of crop yield to the O3 metric AOT40 (accumulated hourly O3 exposure above a cut-off threshold concentration of 40 ppb) significantly differed between OTC and O3-FACE experiments. In wheat and rice, O3 sensitivity was higher in O3-FACE than OTC experiments, while the opposite was the case for soybean. In all three crops, these differences could be linked to factors influencing stomatal conductance (manipulation of water inputs, passive chamber warming, and cultivar differences in gas exchange). Our study thus highlights the importance of accounting for factors that control stomatal O3 flux when applying experimental data to assess O3 impacts on crops at large spatial scales. © 2018 John Wiley & Sons Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110374
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

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作者单位: State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China; Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden; State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Sciences, Chinese Academy of Sciences, Nanjing, China; Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, Japan

Recommended Citation:
Feng Z.,Uddling J.,Tang H.,et al. Comparison of crop yield sensitivity to ozone between open-top chamber and free-air experiments[J]. Global Change Biology,2018-01-01,24(6)
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