A Half-yearly Peer Reviewed Journal of Bangladesh Forest Research Institute

ISSN - Print: 1021-3279 | Online: -

This paper describes the community structure of two prominant forest types i.e.,
moist deciduous miscellaneous and riverian Khair-Sissu forests of Himalayan foot
hills in relation to their analytic and synthetic characters. The importance value index
(IVI) values recorded from moist deciduous miscellaneous forest were maximum for
Mai lotus philippinensis (113.28) and minimum for Cassia fistula (6.54). Similarly the IVI
values in the riverian Khair-Sissu forest were maximum (218.02) for Dalbergia sissoo
and minimum (16.46) for Sapium insigne. The species diversity (2.3796), beta diversity
(2.9166) and equitability (14.6700) values were observed as maximum in moist
deciduous miscellaneous forest, whereas the values for these parameters were minimum
(0.8507, 1.3636 and 2.4915 respectively) in the riverian Khair-Sissu forest.
However, the values for concentration of dominance was maximum (0.6827) in
riverian Khair-Sissu forest and minimum (0.1071) in moist deciduous miscellaneous
forest. The soils in both the forest types were observed as alluvial, coarse textured and
almost neutral in reaction.

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