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Influence of anthropogenic activities on the land use patterns of South Andaman Islands

Author Affiliations

  • 1Department of Marine Science, University of Calcutta, 35 Ballygunj circular Road, Kolkata- 700019, India
  • 2Department of Disaster Management, Pondicherry University, Brookshabad Campus, Port Blair, India
  • 3Institute of Engineering and Management, Salt Lake, Sector V, Kolkata, India
  • 4Department of Chemical Engineering, Jadavpur University, Kolkata-32, India
  • 5Department of Marine Science, University of Calcutta, 35 Ballygunj circular Road, Kolkata- 700019, India

Res. J. Marine Sci., Volume 5, Issue (1), Pages 1-10, January,13 (2017)

Abstract

Anthropogenic activities have brought about large scale changes to the landuse/landcover changes in coastal environment. This has to be monitored and analysed from time to time. An analysis of Landuse temporal data offer insight into the performance and the influence it has on the environment. Georectified LISS III images at 1:50,000 scales were visually interpreted to understand the landuse/Landcover of the South Andaman Islands during a 32 year period. Scrutiny of secondary data has shown that, South Andaman has undergone significant alteration in various landuse features. During the study period, there has been considerable increase in human population in the area resulting in manifold anthropogenic changes in the natural ecosystem of the islands such as large scale alteration in landuse patterns. Reserved forests which once constituted 69.9% of the study area in 1978 have now dwindled to only 45.3% in 2010. Settlements in the area have increased by 208% since 1978 leading to an increase in plantations from 4.2% in 1978 to 6.6% in 2010 owing to the increase in food demand. Mangroves decreased from about 7% in 1978 to 6.2% in 2010. Sandy beaches have decreased at an overall rate of 22.91%. With rise in tourism in the islands, anthropogenic pressures are increasing exponentially. Therefore, efficient sustainable land administration strategies and practices should be adopted to avoid endangering the environment. This information generated on land use/land cover pattern of the region would be of enormous assist for the formulation of policies and programmes required for disaster resilient progress of the islands.

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