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Title: Assessment of wetland change dynamics of Chennai coast, Tamil Nadu, India, using satellite remote sensing
Authors: Jacintha, T. German Amali
Rajasree, S. R. Radhika
Kumar, J. Dilip
Sriganesh, J.
Keywords: Coastal wetlands;Change detection;Landsat imageries;Supervised classification
Issue Date: Aug-2019
Publisher: NISCAIR-CSIR, India
Abstract: The coastal wetlands of Chennai are increasingly being affected by anthropogenic factors, such as urbanization, residential, and industrial development. This study helps to monitor and map the dynamics of the coastal wetlands of Chennai using Landsat satellite images of 1988, 1996, 2006, and 2016 by following a supervised classification method. Post-classification wetland change detection was done in three temporal phases, that is, 1988 1996, 1996 2006, and 2006 2016. Change detection matrix analysis was performed to identify the from to changes. Ground truthing was carried out to validate the wetland classes. The overall accuracy of the classified image was 79.29% and the kappa coefficient was 0.7600. These results were imported into a GIS environment for further analysis. It was found that the wetlands have decreased to an alarming extent in the past 28 years from 23.14% in 1988 to 15.79% in 2016 of the total study area, owing to conversion of wetlands into industrial development, urban expansion, and other developmental activities.
Page(s): 1258-1266
ISSN: 0975-1033 (Online); 0379-5136 (Print)
Appears in Collections:IJMS Vol.48(08) [August 2019]

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