Analysis of Biomass Degradation as an Indicator of Environmental Challenge of Bilate Watershed Using Gis Techniques
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Date
2007-07
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Addis Ababa Universty
Abstract
Advancement in spatial data processing especially using GIS techniques has
been playing an important role in different applications. Multiple source
spatial and non-spatial data can be processed for the analysis of spatiotemporal
conditions of a given area. Having such an approach in mind the
Bilate Watershed Biomass is analysed using multi-temporal Landsat images
acquired in 1973, 1986 and 2001. Such data are processesed using digital
image processing techniques including NDVI and Tasselled Cap analysis.
Besides, different vector data are extracted from the images as well as other
topographic and thematic maps. Land use land cover of the watershed is
interpreted and based on that the level of biomass degradation is analysed.
Using the integrated spatial information, decision support system has been
applied for the identification of priority areas to be conserved due to their
sever damage. The study identified major causes and effects of biomass
degradation of the watershed.
Key Word: Remote Sensing, GIS, Biomass, Environment, Degradation,
decision making, conservation multitemporal, multispectral,
land use, land cover.
Description
Keywords
Remote Sensing, GIS, Biomass, Environment, Degradation, Decision making, Conservation multitemporal, Multispectral, Land use, Land cover.