globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.13017
论文题名:
Sun-induced fluorescence - a new probe of photosynthesis: First maps from the imaging spectrometer HyPlant
作者: Rascher U.; Alonso L.; Burkart A.; Cilia C.; Cogliati S.; Colombo R.; Damm A.; Drusch M.; Guanter L.; Hanus J.; Hyvärinen T.; Julitta T.; Jussila J.; Kataja K.; Kokkalis P.; Kraft S.; Kraska T.; Matveeva M.; Moreno J.; Muller O.; Panigada C.; Pikl M.; Pinto F.; Prey L.; Pude R.; Rossini M.; Schickling A.; Schurr U.; Schüttemeyer D.; Verrelst J.; Zemek F.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期:12
起始页码: 4673
结束页码: 4684
语种: 英语
英文关键词: Airborne measurements ; Chlorophyll fluorescence ; FLEX ; HyPlant ; Imaging spectroscopy ; Photosynthesis ; Remote sensing ; Sun-induced fluorescence ; Vegetation monitoring
Scopus关键词: airborne survey ; carbon dioxide ; fluorescence ; photosynthesis ; remote sensing ; spatial resolution ; spectral resolution ; spectrometer ; chlorophyll ; fluorescence ; photosynthesis ; physiology ; procedures ; remote sensing ; spectrofluorometry ; sunlight ; Chlorophyll ; Fluorescence ; Photosynthesis ; Remote Sensing Technology ; Spectrometry, Fluorescence ; Sunlight
英文摘要: Variations in photosynthesis still cause substantial uncertainties in predicting photosynthetic CO2 uptake rates and monitoring plant stress. Changes in actual photosynthesis that are not related to greenness of vegetation are difficult to measure by reflectance based optical remote sensing techniques. Several activities are underway to evaluate the sun-induced fluorescence signal on the ground and on a coarse spatial scale using space-borne imaging spectrometers. Intermediate-scale observations using airborne-based imaging spectroscopy, which are critical to bridge the existing gap between small-scale field studies and global observations, are still insufficient. Here we present the first validated maps of sun-induced fluorescence in that critical, intermediate spatial resolution, employing the novel airborne imaging spectrometer HyPlant. HyPlant has an unprecedented spectral resolution, which allows for the first time quantifying sun-induced fluorescence fluxes in physical units according to the Fraunhofer Line Depth Principle that exploits solar and atmospheric absorption bands. Maps of sun-induced fluorescence show a large spatial variability between different vegetation types, which complement classical remote sensing approaches. Different crop types largely differ in emitting fluorescence that additionally changes within the seasonal cycle and thus may be related to the seasonal activation and deactivation of the photosynthetic machinery. We argue that sun-induced fluorescence emission is related to two processes: (i) the total absorbed radiation by photosynthetically active chlorophyll; and (ii) the functional status of actual photosynthesis and vegetation stress. © 2015 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/61598
Appears in Collections:影响、适应和脆弱性

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作者单位: Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich GmbH, Leo-Brandt-Str., Jülich, Germany; Department of Earth Physics and Thermodynamics, University of Valencia, Dr Moliner 50, Burjassot, Valencia, Spain; Remote Sensing of Environmental Dynamics Lab, DISAT, Università degli Studi Milano-Bicocca, Milano, Italy; Remote Sensing Laboratories, University of Zurich, Winterthurerstrasse 190, Zurich, Switzerland; European Space Agency (ESA), ESTEC, Keplerlaan 1, Noordwijk, Netherlands; Institute for Space Sciences, Free University of Berlin, Carl-Heinrich-Becker-Weg 6-10, Berlin, Germany; Global Change Research Centre AS CR, Bělidla 986/4a, Brno, Czech Republic; Specim Spectral Imaging Ltd., Teknologiantie 18A, Oulu, Finland; Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing, National Observatory of Athens, Athens, Greece; Field Lab Campus Klein-Altendorf, Agricultural Faculty, University of Bonn, Klein-Altendorf 3, Rheinbach, Germany

Recommended Citation:
Rascher U.,Alonso L.,Burkart A.,et al. Sun-induced fluorescence - a new probe of photosynthesis: First maps from the imaging spectrometer HyPlant[J]. Global Change Biology,2015-01-01,21(12)
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