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Using Time Series of Satellite Images to Detect Vegetation Cover Change in Dhaka City

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DOI: 10.4236/jgis.2014.66054    3,724 Downloads   4,468 Views   Citations

ABSTRACT

The spatial land cover pattern of Dhaka city is restlessly altering as it has highest growing rates among megacities. Due to high urbanization rates, land use is changing from natural to man-made along with resource extractions that accelerate the land cover changes. This study has evidently given the glimpse of the raising concern by assessing the loss of vegetation coverage of Dhaka Metropolitan Area using multi-temporal Landsat imageries. 20 years satellite data have been used to detect the vegetation cover changes in Dhaka city with an interval of 10 years. Study reveals that 66.87 square kilometer vegetation coverage of Dhaka Metropolitan Area is lost during the whole time period. The rate of loss of vegetation coverage is very severe in Dhanmondi, Gulshan, Uttara, Demra, Mirpur, Sabujbagh, Ramna, Mohammadpur, Kafrul, Shyampur and so on. The overall precision of my Landsat-derived vegetation coverage maps is 92.5%.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Jaber, S. , Ghosh, A. and Mahmud, M. (2014) Using Time Series of Satellite Images to Detect Vegetation Cover Change in Dhaka City. Journal of Geographic Information System, 6, 653-663. doi: 10.4236/jgis.2014.66054.

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