Article Sidebar
Published:
Sep 3, 2018Keywords:
Biomass carbon sequestration stock secondary forest tree species.
Article Details
Issue
Section
Articles
Copyright: © 2017 The College of Forestry, Wildlife and Tourism.
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form, or by any means electronic, mechanical, photocopying, recording or otherwise without prior permission from the College of Forestry, Wildlife and Tourism, SUA.
Main Article Content
Biomass and carbon stock estimation of five selected tree species in a secondary forest at Obafemi Awolowo University Campus, Ile-Ife, Nigeria
Abstract
Biomass and carbon stock of five tree
species were investigated in a secondary
forest in Ile-Ife, Nigeria in order to assess
the contribution of individual tree species
to above and below ground biomass, and
carbon stock in the forest. Fifty individual
trees each of Celtis zenkeri, Funtumia
elastica, Holarrhena floribunda, Sterculia
tragacantha and Newbouldia laevis were
sampled. The diameter at the base (at the
ground level), middle (approximately half
of the tree height), top (diameter of the tip
of the tree) of the trees as well as at breast
height; height of individuals of each
species ≥ 10 cm DBH were measured.
Above ground biomass was calculated as a
product of stem volume and wood basic
density while carbon stock was determined
as the product of dry weight and an
assumed carbon content of 50% of the tree
biomass while below ground biomass was
estimated using root:shoot ratio
relationship. Results showed significant (p
< 0.05) differences in biomass and carbon
stock between the tree species. The order
of biomass accumulation and carbon stock
was Celtis zenkeri > Holarrhena
floribunda > Funtumia elastica >
Newbouldia laevis > Sterculia
tragacantha. The lower DBH size class
(21-30 cm) had the highest biomass
contribution in the species. The study
showed that the forest was generally
characterized by small individuals and also
provided information that will enhance
prediction of biomass and carbon stock
determination in tree species.
species were investigated in a secondary
forest in Ile-Ife, Nigeria in order to assess
the contribution of individual tree species
to above and below ground biomass, and
carbon stock in the forest. Fifty individual
trees each of Celtis zenkeri, Funtumia
elastica, Holarrhena floribunda, Sterculia
tragacantha and Newbouldia laevis were
sampled. The diameter at the base (at the
ground level), middle (approximately half
of the tree height), top (diameter of the tip
of the tree) of the trees as well as at breast
height; height of individuals of each
species ≥ 10 cm DBH were measured.
Above ground biomass was calculated as a
product of stem volume and wood basic
density while carbon stock was determined
as the product of dry weight and an
assumed carbon content of 50% of the tree
biomass while below ground biomass was
estimated using root:shoot ratio
relationship. Results showed significant (p
< 0.05) differences in biomass and carbon
stock between the tree species. The order
of biomass accumulation and carbon stock
was Celtis zenkeri > Holarrhena
floribunda > Funtumia elastica >
Newbouldia laevis > Sterculia
tragacantha. The lower DBH size class
(21-30 cm) had the highest biomass
contribution in the species. The study
showed that the forest was generally
characterized by small individuals and also
provided information that will enhance
prediction of biomass and carbon stock
determination in tree species.
