ECOLOGICAL ASSESSMENT OF BETTALANDS IN UTTARA KANNADA DISTRICT
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Date
2003
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, DHARWAD
Abstract
"Ecological assessment of bettalands in Uttarkannada district is
generally aimed at Identifying their present status with respect to vegetation
components and management practices adopted in the bettalands. Three
categories of bettaland holdings (small, medium and large) and one adjoining
respective natural stand were evaluated among two vegetation tracts viz., moist
deciduous and evergreen vegetation tracts. The species diversity v*'as found to
be directly correlated with extent of land across different categories of holdings
as such maximum number of species (53) were recorded in natural stands and
least (22) in the small bettaland holding.
Among various component species Terminalla tomentosa - Terminalia
paniculata - Ougenia dalbergioides were found to be most dominant in moist
deciduous tracts and Pterocarpus diverslfolium - Garcinia gummigatta - Olea
dioca were abundant in evergreen tracts. Among various categories of land
holdings, natural stands recorded highest number of tree species (690
trees./ha) followed by large land holdings (635 trees/ha) in evergreen tracts and
least was with the small land holdings (225 trees/ha) in moist deciduous tract.
The species richness and species diversity were highest in natural adjoining
stands and large bettaland holdings and lowest in small bettaland holdings.
The management practices such as frequency of lopping, utilization of
fuel wood, collection of dried leaves and setting fire to the betttalands were
found to be optimum in large and medium bettaland holdings, whereas it was
severe in small bettaland holdings."
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No. of references 81