JEB logo

Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP
About Journal
    Home
    Obituary: Dr. R. C. Dalela
    Editorial Board
    Reviewer Panel
    Publication Policies
    Guidelines for Editors
    Guidelines for Reviewers
    Abstracting and Indexing
    Subscription and Payments
    Contact Journal
    About Triveni Enterprises
 
Read Journal
    Current Issue
    Journal Archives
 
For Authors
    Guidelines for Authors
    Terms and Conditions
    Author Resources
    Fees and Payments
    Track Paper Status
 

Google Search the Journal web-site:


    Abstract - Issue Jan 2018, 39 (1)                                     Back


nstantaneous and historical temperature effects on a-pinene

Tree species composition and population structure of a secondary tropical evergreen forest in Cachar district, Assam

 

B. Borogayary, A.K. Das* and A.J. Nath

Department of Ecology and Environmental Science, Assam University, Silchar - 788 011, India

*Corresponding Author E-mail: asheshkd@gmail.com

 

 

 

Key words

Population structure

Tropical forest

Tree species 

 

 

Publication Data

Paper received : 18.10.2016???????

Revised received : 18.03.2017????

Re-revised received : 10.04.2017

Accepted : 27.06.2017???????? ??

 

Abstract

Aim: Species composition, structure and dynamics are becoming an important tool to estimate the level of adaptation to the environment and providing useful information to their ecological significance. The present study was carreid out to determine the tree species composition, diversity and population structure of a secondary tropical evergreen forest in Cachar district, Assam.

 

Methodology: Assessment of tree was carried out in a permanent plot (1 ha) subdivided into one hundred (10 m x 10 m) quadrats for enumeration of all trees (≥ 10 cm) girth at breast height. Girth was measured at (1.37 m) above ground level and trees of girth size (≥ 10 cm) (gbh) were taken. The tree species were collected and herbarium was prepared and identified from collection of herbaria at the Botanical Survey of India, Eastern Regional Centre, Shillong. ????

 

Results: A total of 2152 stems ha-1 belonging to 52 species, 43 genera and 28 families with a total basal area of 23.80 m2 ha-1 were recorded. The most dominant families were Sapotaceae, Myrtaceae, Fagaceae, Euphorbiaceae and Clusiaceae according to the Family Importance Value (FIV) index. Palaquium polyanthum, Memecylon celastrinum, Castanopsis purpurella, Artocarpus chaplasha and Cynometra polyandra were five most dominant and important species in the tropical secondary forest. The girth size of all species combined followed the reverse-J-curve, typical of uneven-aged mixed forests. ???

 

Interpretation: The present study could be useful for understanding the changes in the species composition during the course of development in a secondary tropical forest dominated by Palaquium polyanthum (Sapotaceae).

 

 

Copyright ? 2018 Triveni Enterprises. All rights reserved. No part of the Journal can be reproduced in any form without prior permission. Responsibility regarding the authenticity of the data, and the acceptability of the conclusions enforced or derived, rest completely with the author(s).