Browsing by Author "Kebebew, Zeleleke"

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    GIS and Remote Sensing in Land Use Land Cover Change Detection in Finchaa Valley Area, East Wollega
    (Addis Ababa Universty, 2005-06) Kebebew, Zeleleke; Korme, Tesfaye (PhD)
    This study assessed land use/ land cover change of Finchaa valley area by integrating GIS and Remote sensing techniques in Finchaa valley area in between 1973 and 2003.The study compared four different techniques: image differencing, rationing NDVI image comparisons and post classification Comparisons. Image differencing and rationing proved not suitable for the study area. NDVI is found better for visual comparisons with its mean values. Post classification comparison is proved the best method for the study area. The result of the analysis indicates that generally vegetation cove is decreasing attribute to increase in crop land with accelerated rate of change, the development of mechanized state farm in between 1972 and 1986 and agroindusrial development since1991at accelerated rate of change with its related infrastructures but collapse of state farm in the valley. The change is directly related to socio-economic activities, fire and poor environmental management and inseparably connected to one another. From observation the change has negative implications on the environments particularly on land, vegetation and animal diversities. Therefore the ill environmental management strategy should be re evaluated to protect to protect vegetation cover and to keep the development sustainable.
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    GIS and Remote Sensing in Land Use/ Land cover Change Detection in Finchaa Valley Area, East Wollega
    (Addis Ababa University, 2005-06) Kebebew, Zeleleke; Korme, Tesfaye (PhD)
    This study assessed land use! land cover change of Finchao valley area by integrating GIS and Remote sensing rechniques in Finchaa valley area in belll'een 1973 and 2003, The stud,' comparedfollr different techniques: image differencing, rationing NDV! image comparisons and posl classification Comparisons, Image differencing and rationing proved not suitable fiJr Ihe slwl\' area, SDVI isfollnd belter for visual comparisons with its mean \'{Ilues, Posl classification comparison is proved the best melhodfor Ihe stlldv area, The res lilt of Ihe analysis indicates thai generally \'egetalion cove is decreasing a/lribule ta increase in crop land with accelerated rate of change, Ihe de\'elopment of mechanized slate farm in heMeen 197_' and 1986 and agroindusrial development since! 991 at accelerated rate of change "'ilh ils re 'ated inji'astruclures bUI collapse of slale f arm in the valley. The change is directly related to socia-economic activities, fire and poor elIvironl11enlalll1anagell1ent and inseparably connect"d to one ana/her, From observational the change has negative implications on the environments particularly all land, vegetation and animal diversities, Therefore the ill environmental management strategy should be re evaluated fO pro/eel 10 protect vegetation e'er and to keep the development sustainable,