Land Use/Land Cover mapping and change detection using space Borne data

Land Use/Land Cover classes in Thiruvallur area of Chengai_— MGR district in Tamil Nadu during the years 1986–90 were mapped through visual interpretation of LANDSAT 5 TM and IRS 1A LISS II images, over space and time. In the study area, it is observed that the built-up area and the agricultural land use extensions are on the upward trend, whereas the area under forest and wasteland has shown a declining trend, caused by both increasing population and related trends in other parameters. The system devised through the study has thus been able to detect the changes in the land uses and cover classes during the selected time periods.