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Siltation analysis in the Neyyar reservoir and forest degradation in its catchment: a study from Kerala state, India.
- Source :
- Environmental Geology; Jan2000, Vol. 39 Issue 3/4, p390-397, 8p
- Publication Year :
- 2000
-
Abstract
- Impact of catchment erosion and the resultant reservoir siltation from a tropical environment is reported here to discuss the effect of a reservoir in the natural degradation of an evergreen-forested segment. While an area of 8.01 km<superscript>2 </superscript>has been affected by direct inundation at the full reservoir level, another 2.6 km<superscript>2</superscript> area once under thick forest cover, had also lost its identity over the last 38 years by indirect degradation. This zone mainly falls in the confluence of tributaries, namely Neyyar and Mullayar, with the reservoir. The capacity of the reservoir was found to be reduced by 28.8 Mm<superscript>3</superscript> during this period and the annual average loss is calculated as 0.75 Mm<superscript>3</superscript> (0.71%), indicating the intensity of erosion from the catchment zone. In case the proposed upper dam in the reservoir comes into existence, an additional area of 2.4 km<superscript>2</superscript> from the virgin forest would be submerged and more area would face degradation around the inundated zone. [ABSTRACT FROM AUTHOR]
- Subjects :
- EROSION
FOREST degradation
ENVIRONMENTAL degradation
Subjects
Details
- Language :
- English
- ISSN :
- 09430105
- Volume :
- 39
- Issue :
- 3/4
- Database :
- Complementary Index
- Journal :
- Environmental Geology
- Publication Type :
- Academic Journal
- Accession number :
- 16565932
- Full Text :
- https://doi.org/10.1007/s002540050019