Meta-analysis assessing potential of steady-state chlorophyll fluorescence for remote sensing detection of plant water, temperature and nitrogen stress

REMOTE SENSING OF ENVIRONMENT

卷:168

Article

Ac, Alexander¹  Malenovsky, Zbynek^2,3  Olejnickova, Julie¹  Galle, Alexander^4,5  Rascher, Uwe⁵  Mohammed, Gina⁶ 

[1] Acad Sci Czech Republ, Global Change Res Ctr, CZ-60300 Brno, Czech Republic

[2] Univ Wollongong, Sch Biol Sci, Wollongong, NSW 2522, Australia

[3] Univ Tasmania, Sch Land & Food, Hobart, Tas 7001, Australia

[4] Bayer CropSci NV, Innovat Ctr, B-9052 Zwijnaarde, Belgium

[5] Forschungszentrum Julich, Inst Bio & Geosci, IBG Plant Sci 2, D-52425 Julich, Germany

[6] P&M Technol, Sault Ste Marie, ON P6A 6S7, Canada

关键词: Steady-state chlorophyll fluorescence;    Passive sun-induced fluorescence;    Active laser-induced fluorescence;    Photosynthesis;    Stress;    Water;    Temperature;    Nitrogen;    Random-effects meta-analysis;    FLEX satellite mission;   

DOI  :  10.1016/j.rse.2015.07.022

来源: Elsevier

【 摘 要 】

Many laboratory studies investigating chlorophyll fluorescence (F) of plants have provided sufficient evidence of the functional link between dynamic changes in photosynthetic activity and F emissions. Far fewer studies, however, have been devoted to detailed analysis of F emission under steady-state conditions, which may be amenable to measurement by passive spectroradiometers onboard airborne or satellite missions. Here, we provide a random-effects meta-analysis of studies using both passively (sun-induced) and actively (e.g. laser-induced) measured steady-state F for detecting stress reactions in terrestrial vegetation. Specifically, we review behaviour of F in red and far-red wavelengths, and also the red to far-red F ratio, for plants physiologically stressed by water deficit, temperature extremes, and nitrogen insufficiency. Results suggest that water stress is, in general, associated with a decline in red and far-red F signal intensity measured at both leaf and canopy levels, whereas the red to far-red F ratio displays an inconsistent behaviour. Chilling, for which only studies with active measurements at the leaf level are available, significantly increased red and far-red F, whereas heat stress produced a less convincing decrease in both F emissions, notably in canopies measured passively. The clearest indicator of temperature stress was the F ratio, which declined significantly and consistently. The F ratio was also the strongest indicator of nitrogen deficiency, revealing a nearly uniformly increasing pattern driven by predominantly declining far-red F. Although significant knowledge gaps were encountered for certain scales and F measurement techniques, the analyses indicate that future airborne or space-borne acquisitions of both red and far-red F signals would be beneficial for timely detection of plant stress events. (C) 2015 Elsevier Inc. All rights reserved.

【 授权许可】

Free