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Sensitivity analysis for predicting continuous fields of tree cover and fractional land cover distributions in cloud prone areas

Leinenkugel, Patrick und Wolters, Michel und Künzer, Claudia und Oppelt, Natascha (2014) Sensitivity analysis for predicting continuous fields of tree cover and fractional land cover distributions in cloud prone areas. International Journal of Remote Sensing, 35 (8), Seiten 2799-2821. Taylor & Francis. doi: 10.1080/01431161.2014.890302. ISSN 0143-1161.

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Offizielle URL: http://www.tandfonline.com/doi/full/10.1080/01431161.2014.890302

Kurzfassung

The use of multi-temporal data sets, such as vegetation index time series or phenological metrics, for improved classification and regression performance is well established in the remote sensing science community. However, the usefulness of such information is less apparent for areas with distinct wet season periods and heavily concentrated cloud cover. In view of this, this study examines the potential of multi-temporal data sets for the estimation of sub-pixel land cover fractions and tree density in an area having distinct wet and dry seasons. Prediction is based on a regression tree algorithm in combination with linear least squares regression planes, that relate multi-spectral and multi- temporal satellite data from the MODIS sensor to sub-pixel land cover proportions and tree cover densities, derived from high resolution land cover maps. Furthermore, several versions of the latter were produced by using different classification approaches in order to evaluate the sensitivity of the response variable on overall prediction accuracy. The results were evaluated according to absolute accuracy levels and according to their long-term inter-annual robustness by applying the regression models to MODIS data over a period of 11 years. The best regression model based on dry season information only, estimated continuous fields of tree density with a prediction error of less than 7% and an inter-annual variability of less than 4% over a time period of 11- years. The inclusion of intra-annual information did not contribute to any improvements in model accuracy compared to information from the dry season alone, and furthermore, deteriorated inter-annual robustness of model predictions. Aside from that, it has been shown that the quality of the response variable in the training data had significant effects on overall accuracy.

elib-URL des Eintrags:https://elib.dlr.de/87986/
Dokumentart:Zeitschriftenbeitrag
Titel:Sensitivity analysis for predicting continuous fields of tree cover and fractional land cover distributions in cloud prone areas
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Leinenkugel, PatrickPatrick.Leinenkugel (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Wolters, Michelmichel.wolters (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Künzer, ClaudiaClaudia.Kuenzer (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Oppelt, Nataschaoppelt (at) geographie.uni-kiel.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:2014
Erschienen in:International Journal of Remote Sensing
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:35
DOI:10.1080/01431161.2014.890302
Seitenbereich:Seiten 2799-2821
Verlag:Taylor & Francis
ISSN:0143-1161
Status:veröffentlicht
Stichwörter:continuous field; tree cover; landuse - landcover; MODIS; regression trees
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erdbeobachtung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):R - Vorhaben Fernerkundung der Landoberfläche (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Deutsches Fernerkundungsdatenzentrum > Landoberfläche
Hinterlegt von: Leinenkugel, Patrick
Hinterlegt am:02 Feb 2014 21:12
Letzte Änderung:06 Nov 2023 15:07

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