Summary
A comparative study of Survey of India topo-maps of 1929 and land satellite imageries in False Colour Combination (FCC) of 1975 indicates a loss of 43% and 46% of the reserved forest around Sambalpur and Jharsuguda respectively, besides other forest types in a radius of twenty miles. Deforestation is found to be an accelerating process where the rate of loss is estimated to be more during 1970–75 and 1960–70 in comparison to 1950–60 from a semilogarithmic trend curve between 1929 and 1975. This curve also fits to a hypothesis that the rate of deforestation is faster after 1950 (after developmental plan periods came into force).
An analysis of the climatic data indicates a decrease in rainfall and number of rainy days, and morning relative humidity. The mean minimum and maximum temperature, evening relative humidity and atmospheric pressure show increasing trends.
Relationships between forest loss and climatic parameters are significant for morning relative humidity, rainy days, maximum temperature and atmospheric pressure.
Considering the loss of storage capacity of the Hirakud reservoir due to severe deforestation in the catchment area, suggestions are given for natural forest preservation.
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Arttabandhu Mishra graduated in Science (Zoology Honours) and Education from Utkal University; postgraduated from Berhampur University, India. At present he is a Lecturer in School of Life Sciences, Sambalpur University and Secretary of Orissa Environmental Consciousness Society. His fields of interests are Productivity and Energetics of Forest Ecosystems, Environmental Education and Community Education. He has published seven papers on the above fields and a number bf popular articles. He tries to use folk literature as media to carry scientific messages.
Madhab C. Dash, obtained his B.Sc. (Hens), M.Sc. from Utkal University, India and Ph.D. from University of Calgary, Canada. At present he is Professor and Head, School of Life Sciences, Sambalpur University, a fellow of the Zoological Society of India, the National Institute of Ecology and the National Academy of Sciences, India. His major areas of research and writing are on the functional role of soil organisms in the decomposer subsystem of ecosystems, He has published seventy-five papers on taxonomy, biology, population ecology, metabolic functions, energy flow modelling, role in soft fertility and waste conditioning ability of Oligochaetes, nematodes, protozoa and soil microorganisms. Professor Dash has contributed specialised chapters in major treaties published by Cambridge University Press, UK; John Wiley and Sons, USA; and Academic Press, New York, USA.
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Mishra, A., Dash, M.C. Desertification around Hirakud reservoir. Environmentalist 4, 51–58 (1984). https://doi.org/10.1007/BF02337118
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DOI: https://doi.org/10.1007/BF02337118