Landmann, Tobias and Schmidt, Michael and Dech, Stefan and Schramm, Matthias and Vogel, Melanie (2006) A new spatially-explicit and object-conditional land cover (LC) data set based on the FAO Land Cover Classification System (LCCS) for the GLOWA catchment area. In: 2006 African Association of Remote Sensing for the Environment, pp. 144-149. 6th AARSE, 2006-10-30 - 2006-11-02, Cairo (Egypt). ISBN 1-920-01710-0.
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Within the GLOWA river basin hydrology and LC project in West Africa, a unique and new LC mapping approach was implemented, using 26 Landsat Enhanced Thematic Mapper (ETM+) data tiles from the year 2000 and corresponding 26 Landsat Thematic Mapper (TM) data tiles from the period 1990. An area of 400.000 squared kilometres was mapped, in both time frames, using an object-orientated conditional approach and a standard FAO LCCS legend. On the first hierarchical level permanent and seasonally wet flooded areas were extracted using thermal emission data, and wetness and greenness indices as a function of landscape position from 90-meter topographic shuttle (SRTM) data. Linear classes were flagged using a fuzzy convolution statistical neighbourhood filter and non-linear classes were consequently flagged and mapped using an unsupervised neural network classifier. A preliminary statistical accuracy assessment was performed using independently collected low to moderate resolution LC data from the same observation period. The neural network classifier was effectively used to discriminate woody from herbaceous cover and shrub from other woody classes, especially in very open savanna areas. Most errors of commissions/confusion were found between grass and very open woody, as well as between managed woody and woody closed areas.
|Document Type:||Conference or Workshop Item (Paper)|
|Title:||A new spatially-explicit and object-conditional land cover (LC) data set based on the FAO Land Cover Classification System (LCCS) for the GLOWA catchment area|
|Journal or Publication Title:||2006 African Association of Remote Sensing for the Environment|
|In ISI Web of Science:||No|
|Page Range:||pp. 144-149|
|Keywords:||Landsat imagery, land cover, LCCS, Glowa Volta Basin|
|Event Title:||6th AARSE|
|Event Location:||Cairo (Egypt)|
|Event Type:||international Conference|
|Event Dates:||2006-10-30 - 2006-11-02|
|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)|
|Institutes and Institutions:||German Remote Sensing Data Center|
|Deposited By:||Anna Cord|
|Deposited On:||17 Mar 2008|
|Last Modified:||27 Apr 2009 14:48|
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