Evaluation of Landsat MSS data for terrain analysis and rangeland management in the lower Okavango Delta Region, Ngamiland, Botswana

The thesis examines the value of satellite data for terrain analysis and aspects of rangeland evaluation in Ngamiland, northern Botswana. The study area encompasses the main livestock production zone of the district. An analysis of terrain was considered integral to detailed analysis and use of satellite data for resource assessment and management. The terrain analysis was based on interpretation of multitemporal Landsat data, and aerial photography, supported by detailed field investigation. A number of classification procedures and computer based digital enhancement techniques were used to facilitate analysis and classification of the data. Terrain types were identified by relating image characteristics to terrain features, primarily vegetation patterns. Relationships between the Landsat data and various ground features related to rangeland resources were analysed. These were mainly related to vegetation parameters, including cover, structure and species composition. The most important factor investigated, was the relationship between cover values of woody vegetation and the satellite data. The results were used to develop a classification using the Landsat digital data. The usefulness of Landsat data for rangeland management, and the importance of adequate ground survey and other support data sources, is discussed in the light of results obtained.<p

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