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Analyzing the seasonal relations between in situ fpar / LAI of cotton and spectral information of RapidEye

Lex, Sylvia and Conrad, Christopher and Schorcht, Gunther (2013) Analyzing the seasonal relations between in situ fpar / LAI of cotton and spectral information of RapidEye. In: From the Basics to the Service. 5th RESA Workshop, pp. 145-155. 5th RESA Workshop - From the Basics to the Service, 20. - 21. März 2013, Neustrelitz. ISBN 978-3-95545-002-1

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Abstract

Leaf Area Index (LAI) and the fraction of absorbed Photosynthetically Active Radiation (fPAR) are frequently used for biophysical modeling of crop growth and yield prediction. This study examines the calculation of LAI and fPAR of cotton using statistical regression with spectral information of RapidEye. Based on the knowledge that commonly used vegetation indices (NDVI, SAVI, EVI) may underperform in the situation of dense vegetation the growing season was divided into main growth and reproductive phases. To account for saturation effects indices including the curvature in the red edge part of the spectra were tested. Field measurements on LAI and fPAR were carried out during the vegetation period of 2011 on cotton fields in Uzbekistan. The LAI/fPAR results for RapidEye data will be used as input for an upscaling to TERRA-MODIS time series and transfer to larger areas of Central Asia.

Item URL in elib:https://elib.dlr.de/87480/
Document Type:Conference or Workshop Item (Speech)
Title:Analyzing the seasonal relations between in situ fpar / LAI of cotton and spectral information of RapidEye
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lex, Sylviasylvia.lex (at) uni-wuerzburg.deUNSPECIFIED
Conrad, Christopherchristopher.conrad (at) uni-wuerzburg.deUNSPECIFIED
Schorcht, GuntherGunther.Schorcht (at) uni-wuerzburg.deUNSPECIFIED
Date:2013
Journal or Publication Title:From the Basics to the Service. 5th RESA Workshop
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 145-155
Editors:
EditorsEmail
Borg, ErikErik.Borg@dlr.de
Daedelow, HolgerHolger.Daedelow@dlr.de
Johnson, RyanUNSPECIFIED
ISBN:978-3-95545-002-1
Status:Published
Keywords:Biophysical Parameters, cotton, RapidEye, Fergana Valley, RedEdge, Uzbekistan
Event Title:5th RESA Workshop - From the Basics to the Service
Event Location:Neustrelitz
Event Type:Workshop
Event Dates:20. - 21. März 2013
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Geowissenschaftl. Fernerkundungs- und GIS-Verfahren
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center
Deposited By: Wöhrl, Monika
Deposited On:22 Jan 2014 21:14
Last Modified:08 Jul 2015 08:50

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