Abstract: The Kole wetlands already been declared as complex Ramsar sites in Kerala, India. The study involves to assess the degradation of Vembanad kol wetland (Ramsar site), Kerala, India using Remote Sensing (RS) and Geographical Information Technology (GIS) and to monitoring the monthly water quality with special reference to salinity in surrounding areas of kole wetland system. By analyzing the data such as Survey of India toposheet (1969), LANDSAT image (2001) and IRS P-6 satellite image (2008) showed a significant degradation of Kole wetland from 61% to 28% during the period 1969-2008 respectively. It is inferred that Kole land area shrinked by 10 percent within a period of 32 years (1969-2001).Seven ground water samples were collected during the period of September 2007 to July 2008 and the quality of groundwater has been made through the analysis of physical and chemical parameters. The conductivity value ranged between 50µmhoscm-1 (Well-7) to 400 µ mhoscm-1 (Well-1) and showed the variation in peak season.( April, June and November). This is due to the saline water inflow in to inlet of Chettuva estuary during peak summer season. All parameters within the drinking water permissible limit prescribed by BIS except pH and Turbidity. The study confirm that the extent of salinity is confined in an area of inlet of chettuva estuary.
Keywords: Kole wetland, Vembanad Kole, Water quality, Salinity.
Title: Land degradation and water quality assessment of a part of Thrissur Kole wetland, Kerala, India –Ramsar site
Author: Sinta K .B, Sreekumar.S, Diljo Jose .T, Harilal C.C
International Journal of Interdisciplinary Research and Innovations
ISSN 2348-1218 (print), ISSN 2348-1226 (online)
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