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Trends of wetland reclamation in Colombo Metropolitan Region in Sri Lanka and strategies to minimize adverse impact

Author:

A. G. Amarasinghe

LK
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Abstract

The disappearance of wetlands in the Colombo Metropolitan Region (CMR) in Sri Lanka is increasing at an alarming rate since the 1980s. Both wetland and urban lands in CMR have become important geographical areas in the country both socio- economically and politically. CMR serves as economic and administrative hubs in the country. This background causes to accumulate population and infrastructure facilities in and around the CMR. Therefore, urban development demands more land for the urbanization process. Reclamation of wetland adjacent to urban areas has become a common solution to the high demand for land in CMR, Sri Lanka. The main objectives of this study are to find the trends of wetland reclamation in CMR and develop effective and efficient strategies to minimize the adverse impact of wetland reclamation process. The primary data was collected from two methods namely, interpretation of air photographs taken in 1959 and satellite images of 1989 and 1918 which appeared on Google Map and field surveys. Secondary data was collected from reviewing literature. Results of this study indicate that, the 63.46% of the wetland in CMR have disappeared during the last 59 years since 1959. The overall wetland reduction rate is higher since 1989. In addition, there is a trend for the disappearance of the wetland extent which is changing spatially and temporally.
How to Cite: Amarasinghe, A.G., 2019. Trends of wetland reclamation in Colombo Metropolitan Region in Sri Lanka and strategies to minimize adverse impact. Sri Lanka Journal of Advanced Social Studies, 9(1), pp.18–39. DOI: http://doi.org/10.4038/sljass.v9i1.7145
Published on 30 Dec 2019.
Peer Reviewed

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