Remote sensing of sun-induced fluorescence to improve modeling of diurnal courses of gross primary production (GPP)

被引：242

作者：

Damm, Alexander ^{[1
]}

Elbers, Jan ^{[2
]}

Erler, Andre ^{[3
]}

Gioli, Beniamino ^{[4
]}

Hamdi, Karim ^{[3
]}

Hutjes, Ronald ^{[2
]}

Kosvancova, Martina ^{[5
]}

Meroni, Michele ^{[6
]}

Miglietta, Franco ^{[4
]}

Moersch, Andre ^{[3
]}

Moreno, Jose ^{[7
]}

Schickling, Anke ^{[8
]}

Sonnenschein, Ruth ^{[1
]}

Udelhoven, Thomas ^{[9
]}

van der Linden, Sebastian ^{[1
]}

Hostert, Patrick ^{[1
]}

Rascher, Uwe ^{[3
]}

机构：

[1] Humboldt Univ, Geomat Lab, D-10099 Berlin, Germany

[2] Alterra, NL-6701 AP Wageningen, Netherlands

[3] Forschungszentrum Julich, ICG Phytosphere 3, Inst Chem & Dynam Geosphere, D-52425 Julich, Germany

[4] CNR, IBIMET, I-50145 Florence, Italy

[5] Inst Syst Biol & Ecol, Div Ecosyst Proc, Lab Plants Ecol Physiol, Brno 60300, Czech Republic

[6] Univ Milano Bicocca, DISAT, Remote Sensing Environm Dynam Lab, I-20126 Milan, Italy

[7] Univ Valencia, Dept Earth Phys & Thermodynam, E-46100 Burjassot, Spain

[8] Univ Cologne, Inst Geophys & Meteorol, D-50937 Cologne, Germany

[9] CRP Gabriel Lippmann, Dept Environm & Agrobiotechnol, L-4422 Belvaux, Luxembourg

来源：

GLOBAL CHANGE BIOLOGY | 2010年 / 16卷 / 01期

关键词：

diurnal carbon uptake; eddy covariance; fluorescence yield; GPP; LUE; PRI; remote sensing; spectroscopy; sun-induced fluorescence; LIGHT-USE EFFICIENCY; INDUCED CHLOROPHYLL FLUORESCENCE; PHOTOCHEMICAL REFLECTANCE INDEX; NET PRIMARY PRODUCTION; EDDY COVARIANCE; LEAF SENESCENCE; PHOTOSYSTEM-II; CARBON-DIOXIDE; STEADY-STATE; WATER-VAPOR;

D O I：

10.1111/j.1365-2486.2009.01908.x

中图分类号：

X176 [生物多样性保护];

学科分类号：

090705 ;

摘要：

Terrestrial gross primary production (GPP) is an important parameter to explore and quantify carbon fixation by plant ecosystems at various scales. Remote sensing (RS) offers a unique possibility to investigate GPP in a spatially explicit fashion; however, budgeting of terrestrial carbon cycles based on this approach still remains uncertain. To improve calculations, spatio-temporal variability of GPP must be investigated in more detail on local and regional scales. The overarching goal of this study is to enhance our knowledge on how environmentally induced changes of photosynthetic light-use efficiency (LUE) are linked with optical RS parameters. Diurnal courses of sun-induced fluorescence yield (F-Syield) and the photochemical reflectance index of corn were derived from high-resolution spectrometric measurements and their potential as proxies for LUE was investigated. GPP was modeled using Monteith's LUE-concept and optical-based GPP and LUE values were compared with synoptically acquired eddy covariance data. It is shown that the diurnal response of complex physiological regulation of photosynthesis can be tracked reliably with the sun-induced fluorescence. Considering structural and physiological effects, this research shows for the first time that including sun-induced fluorescence into modeling approaches improves their results in predicting diurnal courses of GPP. Our results support the hypothesis that air-or spaceborne quantification of sun-induced fluorescence yield may become a powerful tool to better understand spatio-temporal variations of fluorescence yield, photosynthetic efficiency and plant stress on a global scale.

引用

页码：171 / 186

页数：16

共 79 条

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