Decision makers at the strategic / tactical levels in the forestry field have become increasingly interested in obtaining forest information from remote sensing data. This information, referred to as forest parameters, can be obtained at the forest stands level, and should be sufficient to contribute to the decision support system (DSS) for forest enterprises. Based on the judgment of forest experts, the most important forest parameters related to forest management and planning, to be delivered by remote sensing means, were identified. These parameters include: forest cover, forest type, forest changes and the forest tree species - the parameter that presents the greatest challenge to remote sensing.
The aim of this thesis was to investigate the potential of two approaches, provided by leading optical remote sensing satellite technologies for offering operational means, to extract the above listed parameters. The first is the mono-temporal hyperspectral approach, using the Hyperion system in the Mediterranean forest. The second is the multi-seasonal multispectral approach, using the RapidEye system in three Bavarian forests representing different growth regions. The outcomes of both approaches will inform which approach should be considered the most suitable for individual parameter extraction. Results should further contribute promoting the implementation into forest applications using the next generation hyperspectral satellites such as: EnMap, as well as multi-seasonal satellites like the Sentinel missions.
The multi-seasonal multispectral approach has to cope with lower spectral resolution at higher spatial and temporal resolution while the hyperspectral approach is based on the high spectral resolution and a spectral range from the visible up to the short wave infrared.
Results show that the higher temporal and spatial resolution, in spite of the lower spectral resolution, of RapidEye data proved to be better suited for extracting the parameters forest cover, type, changes and specially tree species, than that of Hyperion data. The cost of the multi-seasonal multispectral approach will remain more affordable than the hyperspectral approach, taking into consideration the limited coverage of the hyperspectral systems. This trend is expected to continue with next generation hyperspectral satellites EnMap, as well as the multi-seasonal satellites Sentinel.
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Decision makers at the strategic / tactical levels in the forestry field have become increasingly interested in obtaining forest information from remote sensing data. This information, referred to as forest parameters, can be obtained at the forest stands level, and should be sufficient to contribute to the decision support system (DSS) for forest enterprises. Based on the judgment of forest experts, the most important forest parameters related to forest management and planning, to be delivered...
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