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Detecting land use and land cover changes of Thanjavur block in Thanjavur district, Tamilnadu, India from 1991 to 2009 using geographical information system

J. Punithavathi, S.Tamilenthi, R. Baskaran and R. Mahesh

Land use and land cover is dominant role in the part of urbanization. As the rapid urbanization led various activities in a region and these changes generally takes place in the agricultural land and caused decrease of arable land .The satellite imageries LANDSAT 5TM (1991), LANDSAT 7ETM (1999) AND LISS 111 (2009) data’s are used. The scales are 1:50,000 and 1:250,000. 1991, 1999 and 2009 covering a period of 19 years the aerial distribution of the land use and land cover changes has been observed. The changes were identified ,in which the decrease of Agricultural land, Mixed plantation, Scrub land and Water body and increase of Built up land, Fallow land, River sand and Without scrub land. The land use and land cover maps are prepared by using GIS software to evaluate the changes and it is showed strong variation