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

Gessner, Ursula and Klein, Doris and Conrad, Christopher and Schmidt, Michael and 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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Abstract

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.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Towards an automated estimation of vegetation cover fractions on multiple scales: Examples of Eastern and Southern Africa
Authors:
AuthorsInstitution or Email of Authors
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
Date:May 2009
Journal or Publication Title:Proceedings of the 33rd International Symposium on Remote Sensing of Environment
Refereed publication:No
Status:Published
Keywords:fractional vegetation cover, regression trees, degradation, semi-arid environments, Africa
Event Title:33rd International Symposium on Remote Sensing of Environment
Event Location:Stresa, Italy
Event Type:international Conference
Event Dates:4-8 May 2009
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Geowissenschaftl. Fernerkundungs- und GIS-Verfahren (old)
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center
Deposited By: Ursula Gessner
Deposited On:14 Jun 2010 10:33
Last Modified:12 Dec 2013 20:57

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