Article (Scientific journals)
Constraining water limitation of photosynthesis in a crop growth model with sun-induced chlorophyll fluorescence
De Cannière, S.; Herbst, M.; Vereecken, H. et al.
2021In Remote Sensing of Environment, 267
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Keywords :
Drought stress; Radiative transfer model; Root water uptake; SCOPE; SIF; Transpiration; Vegetation model; Bioactivity; Chlorophyll; Crops; Drought; Electron transport properties; Evapotranspiration; Fluorescence; Functions; Plants (botany); Radiative transfer; Remote sensing; Water supply; Chlorophyll fluorescence; Crop growth model; Energy; Fluorescence emission; Radiative transfer modelling; Root-water uptake; Soil canopy observation photosynthesis energy; Sun-induced chlorophyll fluorescence; Photosynthesis; Beta vulgaris subsp. vulgaris
Abstract :
[en] Water fulfils key roles in maintaining a plant's biological activity. Water shortage induces stomatal closure, causing a reduction in photosynthesis and transpiration rates. Sun-induced chlorophyll fluorescence (SIF) emission is sensitive to subtle, stress-induced variations in non-photochemical quenching and in photosynthetic electron transport, caused by e.g., a fluctuation in the water availability. Based on this sensitivity, a framework for calibrating a water stress function in a crop growth model using ground-based SIF observations is proposed. SIF time series are simulated by coupling the AgroC crop growth model to the Soil Canopy Observations Photosynthesis Energy (SCOPE) model. This allowed parametrizing the water stress function in the AgroC crop growth model, resulting in improved estimates of actual evapotranspiration and net ecosystem exchange over a sugar beet stand during stressed periods. The improvement in the estimation of the water and carbon fluxes by AgroC during the summer months highlights the ability of canopyscale SIF observations to serve as a remote sensing metric to indicate the intensity of a stress condition. We argue that our framework, linking SIF emission to stress functions, can be used to extract information concerning drought stress from the Fluorescence Explorer (FLEX) satellite, scheduled for launch in 2024. © 2021
Disciplines :
Engineering, computing & technology: Multidisciplinary, general & others
Earth sciences & physical geography
Environmental sciences & ecology
Author, co-author :
De Cannière, S.;  Earth and Life Institute, Université catholique de Louvain, Croix du Sud 2 Box L7.05.02, Louvain-la-Neuve, 1348, Belgium
Herbst, M.;  Agrosphere (IBG-3), Institute of Bio- and Geosciences, Forschungszentrum Jülich GmbH, Jülich, 52425, Germany
Vereecken, H.;  Agrosphere (IBG-3), Institute of Bio- and Geosciences, Forschungszentrum Jülich GmbH, Jülich, 52425, Germany
Defourny, P.;  Université Catholique de Louvain - UCL > Earth and Life Institute
Jonard, François  ;  Université de Liège - ULiège > Département de géographie > Systèmes d'information géographiques
Language :
English
Title :
Constraining water limitation of photosynthesis in a crop growth model with sun-induced chlorophyll fluorescence
Publication date :
2021
Journal title :
Remote Sensing of Environment
ISSN :
0034-4257
eISSN :
1879-0704
Publisher :
Elsevier Inc.
Volume :
267
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 19 October 2021

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