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Towards an automated estimation of vegetation cover fractions on multiple scales: Examples of Eastern and Southern Africa

Gessner, Ursula und Klein, Doris und Conrad, Christopher und Schmidt, Michael und Dech, Stefan (2009) Towards an automated estimation of vegetation cover fractions on multiple scales: Examples of Eastern and Southern Africa. In: Proceedings of the 33rd International Symposium on Remote Sensing of Environment. 33rd International Symposium on Remote Sensing of Environment, 4-8 May 2009, Stresa, Italy.

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690kB

Kurzfassung

Vegetation cover is one of the key parameters for monitoring the state and dynamics of ecosystems. African semi-arid landscapes are especially prone to degradation due to climate change and increased anthropogenic impact on different spatial and temporal scales. In this study, a multiscale method is applied to monitor vegetation cover by deriving sub-pixel percentages of woody vegetation, herbaceous vegetation and soil. The approach is comparatively applied to two semi-arid savannas, one in Namibia and one in Kenya. The results in eastern and southern Africa demonstrate the applicability of the method to different semiarid ecosystems and to different types of remote sensing data. The presented analysis could show that continuous cover mapping is a highly suitable concept for semi-arid ecosystems, as these show gradual transitions rather than distinct borders between land cover types. Different spatial patterns of vegetation cover depending on land use practices and intensities could be revealed.

Dokumentart:Konferenzbeitrag (Vortrag, Paper)
Titel:Towards an automated estimation of vegetation cover fractions on multiple scales: Examples of Eastern and Southern Africa
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Gessner, Ursulaursula.gessner@dlr.de
Klein, Dorisdoris.klein@uni-wuerzburg.de
Conrad, Christopherchristopher.conrad@uni-wuerzburg.de
Schmidt, Michaelmichael.schmidt@dlr.de
Dech, Stefanstefan.dech@dlr.de
Datum:Mai 2009
Erschienen in:Proceedings of the 33rd International Symposium on Remote Sensing of Environment
Referierte Publikation:Nein
Status:veröffentlicht
Stichwörter:fractional vegetation cover, regression trees, degradation, semi-arid environments, Africa
Veranstaltungstitel:33rd International Symposium on Remote Sensing of Environment
Veranstaltungsort:Stresa, Italy
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:4-8 May 2009
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EO - Erdbeobachtung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Geowissenschaftl. Fernerkundungs- und GIS-Verfahren (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Deutsches Fernerkundungsdatenzentrum
Hinterlegt von: Ursula Gessner
Hinterlegt am:14 Jun 2010 10:33
Letzte Änderung:12 Dez 2013 20:57

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