Original Research Article
Year: 2016 | Month: April | Volume: 3 | Issue: 4 | Pages: 12-17
Change Detection Analysis Using Geospatial Technology in Salem District, Tamil Nadu, South India
P. Arulbalaji, B. Gurugnanam
Centre for Applied Geology, Gandhigram Rural Institute Deemed- University, Dindigul-624302.
Corresponding Author: P. Arulbalaji
The present study represents the application of geospatial technology for land use land cover, accuracy assessment and change detection with the use of satellite image. A Landsat image has been used in two difference years, which were acquired in USGS website. ERDAS imaging software has been used and the supervised classification method applied to classify the land use land cover pattern. The land use land cover map was prepared the year 1992 and 2015. The study specified that the land use land cover pattern of the Salem district is composed of Deciduous forests, Evergreen and semi evergreen forests, Crop land, Cultivation and Plantation Land, Build up land, Water bodies, Mines and Barren land. Each land use land cover map have examined the accuracy of the classification, which are considered as Overall accuracy, Kappa accuracy, Producers’ accuracy and User’s accuracy. The changes of land use land cover have assessed from 1992 to 2015. From this investigation, the changes have noticed over a period of 23 years interval, those are, deciduous forests, Crop land, Cultivation and plantation land and water bodies has decreased in 398 Km2, 250 Km2, 45 Km2, 16 Km2 respectively. In contrast, Evergreen and Semi evergreen forests, Build up land, Mines and Barren land have increased in 288 Km2, 293 Km2 and 128 Km2 respectively.
Key words: Land Use Land Cover, Change detection, Remote sensing, GIS.