Vegetation Characteristics along Disturbance Gradient of Jeypore Reserve Forest of North East India
- Author Bhaskar Rajbonshi
- Co-Author M. Islam
- DOI
- Country : India
- Subject : Forest Ecology
Keywords : Forest inventory, Jeypore Reserve Forest, Pristine stand, Species richness, Evenness
Abstract
Forest inventory data were collected in 2012-2015 from Jeypore Reserve Forest of North East India along with disturbance gradient. All trees greater than or equal to 10cm dbh at breast height (1.37 m), shrubs and herbs and climbers were recorded. The total and relative value of each species for density, diversity, dominance and importance value index (IVI) were calculated. A total of 271 species belonging to 194 genera under 112 families have been documented among which 101 trees, 60 shrubs, 62 herbs and 48 climbers’ species.The mean density was highest (836 number of individuals ha-1, and 503 number of individualsha-1 for trees and climbers respectively) at the pristine stand (PS) and lowest (253 number of individuals ha-1 and 205 number of individualsha-1 for trees and climbers respectively) in degraded stand (DS). Shrubs and herbs shows a reverse trend with lowest value(4700 stemsha-1, 82503 stemsha-1for shrubs, herbs respectively)in pristine stand (PS) and highest value ( 7356 stemsha-1, and 124530 stemsha-1 for shrubs and herbs respectively) in degraded stand (DS). For basal area the highest value (77.37 m2 ha-1) in PSfollowed by SDSwith a value of 63.84 andlowest value (16.35 m2 ha-1) in DS. For shrubs it shows reverse trend.The total number of individuals/stems, evenness, speciesrichness, diversity etc.Decreases with the increase of disturbance gradient of the area. Correlation matrix shows diversity index is simply negatively correlated with dominance index.
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