Magesh, G; Dr. Menon, A R R(Cochin University of Science And Technology, February 12, 2014)
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Abstract:
mbikulam Tiger Reserve of Western Ghats using Geospatial technology. The major objectives of the study are Land use land cover mapping (LULC) and Phytodiversity analysis. Satellite data was used to map the land use / land cover using supervised classification techniques in Erdas imagine. The change for a period of 32 years was assessed using the multi-temporal satellite datasets from Landsat MSS (1973), Landsat TM (1990), and IRS P6 LISS III (2005). A geospatial approach was used for the land cover analysis. Digital elevation models, Satellite imageries and SOI topo sheets were the data sets used in the analysis. Vegetation sampling plots distributed over the different forest types were enumerated and studied for Phytodiversity analysis.
Description:
Dept. of GIS & Remote Sensing.
Forest Management and Information System Division,Kerala Forest Research Institute
Dipson, P T; Dr.Harindranathan Nair, M V(Cochin University Of Science And Technology, November , 2012)
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Abstract:
Urban developments have exerted immense pressure on wetlands.
Urban areas are normally centers of commercial activity and continue to attract
migrants in large numbers in search of employment from different areas. As a
result, habitations keep coming up in the natural areas / flood plains. This is
happening in various Indian cities and towns and large habitations are coming
up in low-lying areas, often encroaching even over drainage channels. In
some cases, houses are constructed even on top of nallahs and drains.
In the case of Kochi the situation is even worse as the base of the
urban development itself stands on a completely reclaimed island. Also the
topography and geology demanded more reclamation of land when the city
developed as an agglomerative cluster. Cochin is a coastal settlement
interspersed with a large backwater system and fringed on the eastern side by
laterite-capped low hills from which a number of streams drain into the
backwater system. The ridge line of the eastern low hills provides a welldefined
watershed delimiting Cochin basin which help to confine the
environmental parameters within a physical limit. This leads to an obvious
conclusion that if physiography alone is considered, the western flatland is
ideal for urban development. However it will result in serious environmental
deterioration, as it comprises mainly of wetland and for availability of land there
has to be large scale filling up of these wetlands which includes shallow
mangrove-fringed water sheets, paddy fields, Pokkali fields, estuary etc.Chapter 1
School 4 of Environmental Studies
The urban boundaries of Cochin are expanding fast with a consequent
over-stretching of the existing fabric of basic amenities and services.
Urbanisation leads to the transformation of agricultural land into built-up areas
with the concomitant problems regarding water supply, drainage, garbage and
sewage disposal etc. Many of the environmental problems of Cochin are
hydrologic in origin; like water-logging / floods, sedimentation and pollution in
the water bodies as well as shoreline erosion
Description:
School of Environmental Studies
Cochin University of Science and Technology