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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/7339

Title: A Spatio-Temporal Based Estimation of Vegetation Changes in the Tarkwa Mining Area of Ghana
Authors: Kumi-Boateng, B.
Mireku-Gyimah, D.
Duker, A.A.
Issue Date: 2012
Publisher: Research Journal of Environmental and Earth Sciences
Citation: Research Journal of Environmental and Earth Sciences 4(3): 215-229, 2012
Abstract: The Tarkwa Mining Area (TMA) falls in the rainfall belt of Ghana with evergreen Equatorial forest vegetation. TMA has witnessed clearance of large tracts of vegetation to make room for mining and settlements. Destruction of vegetation has exacerbated since surface mining was introduced in the area in the 1980s. However, the actual extent of vegetation change since 1980 to date has not been assessed and quantified. This study uses Remote Sensing (RS) and Geographic Information Systems (GIS) techniques to estimate the changes in vegetation in the area. Temporal satellite images for four different years and 250 ground reference points were classified using maximum likelihood algorithm. The impact of mining on vegetation composition was also estimated using distant gradient. Phytosociological analysis was also carried out to determine the species density, dominance index and diversity index. The results revealed five dominant land use/cover types. Vegetated areas in the TMA lost 932.92 km 2 whereas settlements and mining areas gained 932.93 km 2 of land. A phytosociological analysis of the TMA revealed thatthe number of herbaceous species colonizing the mined areas was much higher than the number colonizing the unmined areas. The study concluded that the rate of changes in the various land-use/cover types in the TMA is alarming and if the current trend of development continues, there could be an imbalance in the ecosystem of the TMA.
Description: Article published in Research Journal of Environmental and Earth Sciences, 2012.
URI: http://hdl.handle.net/123456789/7339
ISSN: 2041-0492
Appears in Collections:College of Engineering

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