Land–use changes of Kaliakair upazila of Bangladesh using Remote Sensing and GIS Technologies

Mozammel Haque Sarker; S M Mizanur Rahman; Mostafuzur Rahman Akhand; Md. Hashem Uddin; Dr. Dewan Abdul Quadir

Volume : V, Issue : VII, July - 2015

Land–use changes of Kaliakair upazila of Bangladesh using Remote Sensing and GIS Technologies

Mozammel Haque Sarker, S M Mizanur Rahman, Mostafuzur Rahman Akhand, Md. Hashem Uddin, Dr. Dewan Abdul Quadir

Abstract :

<p>&nbsp;Land use and land cover changes of Kaliakair upazila, Bangladesh has been investigated using multi&ndash;date Landsat MSS/TM/OLI images of the year 1973, 1989 and 2014. ISODATA clustering as well supervised classification based on parallelepiped and maximum likelihood has been used to classify the dominant features such as green crops, forest vegetation, urban/built up areas and water bodies. The study has been complimented with GIS for inclusion of the settlement areas and features which could not be captured by 30 m resolution Landsat image using the aerial and google imagery. This has been done on the screen digitization. The analyzed image of 1973 showed only 15 hectares of built up areas, but in 1989 and 2014 a rapid increase of urbanization has been detected. It was around 161 hectare in 1989 and 2038 hectares in 2014. In 1973, the forest areas were around 2930 hectares but it has gradually reduced to around 2071 and 1617 hectares during the year 1989 and 2014 respectively. Boro rice was not present in 1973, but it has been found to be about 5471 and 8514 hectares in 1989 and 2014 respectively. The cause of such changes may be attributed to rapid population growth and speedy industrialization.</p>