1Research Scholar, Department of Civil Engineering, Thiagarajar College of Engineering, Madurai-625015, Tamilnadu, India
2Associate Professor, Department of Civil Engineering, Thiagarajar College of Engineering, Madurai-625015, Tamilnadu, India
3Research Scholar, School of Earth and Atmospheric Sciences, Madurai kamaraj University, Madurai-625021, Tamilnadu, India
*dhanasekarapandian@rediffmail.com
Online published on 19 April, 2016.
The study aims to affect of land use and land cover changes is the quantitative method to expound the impact of land use and land cover in Girudhumal river sub basin, Tamilnadu, India over twenty years period(1990 to 2010). The study has been done through Remote Sensing approach using Survey of India(1982) toposheet and Land sat imageries of May 1990, June 2000 and May 2010 MSS. Land use changes have been detected by image processing method in ERDAS imagine 8.5 and Arc GIS 9.3. Thirteen land use classes have been identified and Ground truth observation was also performed to check the accuracy of the classification. The present study has brought to light that the agricultural land that occupied about 29.86% of basin area in 1990 and was decreased to 18.13% of basin area in 2010 and settlement increased 9.8% of total area of basin in 2010. This paper highlights the land use/land cover types, the change over the years and the causes for the change. The importance of remote sensing and GIS technique in mapping and change detection was also highlighted.
Digital image Processing, GIS, Remote sensing, Change detection, Land use and Land Cover
