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    Abstract
2013 (Vol. 5, Issue: 08)
Article Information:

Projecting Land Use Transitions in the Gin Catchment, Sri Lanka

T.N. Wickramaarachchi, H. Ishidaira and T.M.N. Wijayaratna
Corresponding Author:  T.N. Wickramaarachchi 

Key words:  Driving factors, Gin catchment, land use change, logistic regression, spatial analysis, ,
Vol. 5 , (08): 473-480
Submitted Accepted Published
May 29, 2013 June 19, 2013 August 20, 2013
Abstract:

Gin catchment located in the Southern region of Sri Lanka has its land primarily used for natural and planted forest, agriculture and settlements. Though there exist a vital need to investigate how the prevailing land use in the catchment is going to alter subsequent to various anthropogenic activities, so far there have been no such attempts made. This study aims at carrying out spatially explicit land use change analysis across the Gin catchment in order to project the potential land use change in the year 2020 using a logistic regression approach based on Geographic Information System (GIS). In this study, probability of occurrence of a certain land use type was predicted by the socioeconomic, proximity and biophysical driving factors. Allocation of land use change was made in an iterative procedure given the probability maps, the spatial policies and restrictions in combination with the observed land use map in 1983 and the demand for the different land use types. Observed land use map in 1999 was used in validating the predictions. The results envisaged a predominant replacement of cultivations by forest and homestead/garden which seems to have driven jointly by the change in agricultural practices and increase in population.
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  Cite this Reference:
T.N. Wickramaarachchi, H. Ishidaira and T.M.N. Wijayaratna, 2013. Projecting Land Use Transitions in the Gin Catchment, Sri Lanka.  Research Journal of Environmental and Earth Sciences, 5(08): 473-480.
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ISSN (Online):  2041-0492
ISSN (Print):   2041-0484
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