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A multi-scale approach for retrieving proportional cover of life forms
Gessner, Ursula and Conrad, Christopher and Hüttich, Christian and Keil, Manfred and Schmidt, Michael and Dech, Stefan (2008) A multi-scale approach for retrieving proportional cover of life forms. In: Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 6-11 July 2008. IEEE International Geoscience & Remote Sensing Symposium, 6-11 July 2008, Boston, USA.
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Abstract
This study presents a multi-scale procedure to derive continuous proportional cover of woody vegetation in savanna ecosystems. QuickBird data was classified to define a continuous training and validation data set of woody cover proportions. Using a regression tree algorithm based on Landsat TM data, this woody cover information was extrapolated to an area of approximately 185 km x 185 km. The resulting 30 m map of the Namibian North-eastern Kalahari Woodland was aggregated to 250 m and 500 m resolutions. Comparisons of the global MODIS VCF product with the regionally adjusted multi-scale fractional cover map indicate that VCF tree cover is generally underestimated in the study area and confusions between tree and dense shrub cover occur.
| Document Type: | Conference or Workshop Item (Paper, Poster) | ||||||||||||||
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| Title: | A multi-scale approach for retrieving proportional cover of life forms | ||||||||||||||
| Authors: |
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| Date: | July 2008 | ||||||||||||||
| Journal or Publication Title: | Proceedings of the IEEE International Geoscience & Remote Sensing Symposium, 6-11 July 2008 | ||||||||||||||
| Refereed publication: | No | ||||||||||||||
| Status: | Published | ||||||||||||||
| Keywords: | fractional cover, regression tree, multiscale analysis, savanna, VCF | ||||||||||||||
| Event Title: | IEEE International Geoscience & Remote Sensing Symposium | ||||||||||||||
| Event Location: | Boston, USA | ||||||||||||||
| Event Type: | international Conference | ||||||||||||||
| Event Dates: | 6-11 July 2008 | ||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||
| HGF - Program: | Space | ||||||||||||||
| 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 | ||||||||||||||
| Location: | Oberpfaffenhofen | ||||||||||||||
| Institutes and Institutions: | German Remote Sensing Data Center | ||||||||||||||
| Deposited By: | Ursula Gessner | ||||||||||||||
| Deposited On: | 14 Jun 2010 10:27 | ||||||||||||||
| Last Modified: | 01 May 2013 20:59 |
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