Photosynthesis-sun induced fluorescence relationship in a Mediterranean grassland

David Martini, Javier Pacheco-Labrador, Oscar Perez-Priego, C. Van Der Tol, Tarek El Madany, Tommaso Julitta, Micol Rossini, Anatoly Gitelson, Markus Reichstein, Mirco Migliavacca

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

Sun induced fluorescence at 760 nm (F 760 ) has shown to provide a valid approach to quantify gross primary production (GPP) at various scales, however the relationship between GPP and F 760 is influenced by the escape probability of fluorescence (Fesc), a variable which is not still fully understood. Combining radiative transfer modelling approaches, by means of the SCOPE model, and a data driven methodology based on variable selection methods we identify the predictors of Fesc, focusing on the effect of functional and structural traits. We show that Fesc is mainly predicted by structural variables such as fraction of grasses and near infrared reflectance. Building on the analysis of the predictor of Fesc, LUE p and LUE f we present a semi-empirical model formulation based only on optical data that significantly improves the GPP prediction.

Original languageEnglish
Title of host publication2018 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018
Subtitle of host publicationProceedings
PublisherIEEE
Pages5979-5982
Number of pages4
ISBN (Electronic)9781538671504
DOIs
Publication statusPublished - 5 Nov 2018
Event38th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018: Observing, Understanding and Forcasting the Dynamics of Our Planet - Feria Valencia Convention & Exhibition Center, Valencia, Spain
Duration: 22 Jul 201827 Jul 2018
Conference number: 38
https://www.igarss2018.org/

Publication series

NameIEEE International Geoscience and Remote Sensing Symposium (IGARSS)
PublisherIEEE
ISSN (Print)2153-6996
ISSN (Electronic)2153-7003

Conference

Conference38th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018
Abbreviated title2018
CountrySpain
CityValencia
Period22/07/1827/07/18
Internet address

Keywords

  • Canopy structure
  • Fesc
  • Functional traits
  • GPP
  • SCOPE model
  • Sun induced fluorescence

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