globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.13136
论文题名:
Improving the monitoring of crop productivity using spaceborne solar-induced fluorescence
作者: Guan K.; Berry J.A.; Zhang Y.; Joiner J.; Guanter L.; Badgley G.; Lobell D.B.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2016
卷: 22, 期:2
起始页码: 716
结束页码: 726
语种: 英语
英文关键词: Carbon use efficiency ; Crop monitoring ; Fluorescence ; Gross primary production ; Net primary production ; Respiration
Scopus关键词: chlorophyll ; rain ; climate ; crop ; fluorescence ; growth, development and aging ; metabolism ; photosynthesis ; sunlight ; telecommunication ; temperature ; United States ; Chlorophyll ; Climate ; Crops, Agricultural ; Fluorescence ; Photosynthesis ; Rain ; Satellite Communications ; Sunlight ; Temperature ; United States
英文摘要: Large-scale monitoring of crop growth and yield has important value for forecasting food production and prices and ensuring regional food security. A newly emerging satellite retrieval, solar-induced fluorescence (SIF) of chlorophyll, provides for the first time a direct measurement related to plant photosynthetic activity (i.e. electron transport rate). Here, we provide a framework to link SIF retrievals and crop yield, accounting for stoichiometry, photosynthetic pathways, and respiration losses. We apply this framework to estimate United States crop productivity for 2007-2012, where we use the spaceborne SIF retrievals from the Global Ozone Monitoring Experiment-2 satellite, benchmarked with county-level crop yield statistics, and compare it with various traditional crop monitoring approaches. We find that a SIF-based approach accounting for photosynthetic pathways (i.e. C3 and C4 crops) provides the best measure of crop productivity among these approaches, despite the fact that SIF sensors are not yet optimized for terrestrial applications. We further show that SIF provides the ability to infer the impacts of environmental stresses on autotrophic respiration and carbon-use-efficiency, with a substantial sensitivity of both to high temperatures. These results indicate new opportunities for improved mechanistic understanding of crop yield responses to climate variability and change. © 2016 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/61484
Appears in Collections:影响、适应和脆弱性

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作者单位: Department of Earth System Science, Stanford University, Stanford, CA, United States; Center on Food Security and the Environment, Stanford University, Stanford, CA, United States; Department of Global Ecology, Carnegie Institution for Science, Stanford, CA, United States; International Institute for Earth System Sciences, Nanjing University, Nanjing, China; Remote Sensing Section, German Research Center for Geosciences (GFZ), Telegrafenberg A17, Potsdam, Germany; Laboratory for Atmospheric Chemistry and Dynamics (Code 614), National Aeronautics and Space Administration Goddard Space Flight Center, Greenbelt, MD, United States

Recommended Citation:
Guan K.,Berry J.A.,Zhang Y.,et al. Improving the monitoring of crop productivity using spaceborne solar-induced fluorescence[J]. Global Change Biology,2016-01-01,22(2)
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