GIS and Remote Sensing in Land Use Land Cover Change Detection in Finchaa Valley Area, East Wollega
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Date
2005-06
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Addis Ababa Universty
Abstract
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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Keywords
GIS and Remote sensing