European Journal of Scientific Research - EuroJournals

European Journal of Scientific Research
ISSN 1450-216X Vol.14 No.3 (2006), pp. 447-455
© EuroJournals Publishing, Inc. 2006
http://www.eurojournals.com/ejsr.htm
Development of Organic Carbon Sequestration Models for
Dipterocarpus Turbinatus, Acacia Auriculiformis and Eucalyptus
Camaldulensis and their Potentiality
Md. Shahadat Hossain
Institute of Forestry and Environmental Sciences
University of Chittagong, Chittagong-4331, Bangladesh
Gouri Rani Banik
Lecturer,Department of Biochemistry and Molecular Biology
University of Chittagong, Chittagong-4331, Bangladeshs
E-mail: gouribanik2003@yahoo.com
Tel.: +88-01717091189; Fax: +88-031-726310
Abstract
The study was conducted in the Chittagong University campus lies between about
22º27′30″ and 22º29′0″ North latitudes and 91º46′30″ and 91º47′45″ East longitudes. The
aim of the dissertation was to estimate organic carbon stock in the different components
and to establish organic carbon calculating model for the three prominent species of
Bangladesh viz. Dipterocarpus turbinatus Gaertn f., Acacia auriculiformis A Cunn. ex
Benth, and Eucalyptus camaldulensis Dehn. Random sampling was carried out in the field
during data and sample collection, data and samples were collected from the field, dry
biomass and organic carbon content was determined in the laboratory to obtain the desired
results.Proportionate carbon accumulation was distributed as 61.84%, 72.34% and 68.94%
in main bole, as 11.15%, 7.93%, and 11.28%, in primary branches, as 6.98%, 4.29%, and
5.73%, in secondary branches, as 7.27%, 4.34%, and 4.81%, in leaves & twigs, and as
12.76% 11.11% and 9.44% in roots of Dipterocarpus turbinatus, Acacia auriculiformis,
and Eucalyptus camaldulensis respectively.Allometric model, Y = a + bX1 + cX2 (Where,
Y = Total carbon stock (kg), X1 = Total height (m) and X2 = Diameter at Breast Height
(cm) was found to be the best predictor of biomass organic carbon for all the three species
because of highest coefficient of determination (r 2 ) and significance of regression
P>0.01.The model using only diameter at breast height or height with linear relations
produced relatively poor relationship between organic carbon stock and specific single
value. Three carbon tables for the studied three species were also developed by using the
best fit regression equations. Annual gross organic carbon accumulation rate was found as
8.91 kg/tree/year and 8.91 tonne/ha/year in Acacia auriculiformis, 5.36 kg/tree/year and
9.50 tonne/ha/year in Eucalyptus camaldulensis and 2.33 kg/tree/year and 3.04
tonne/ha/year in Dipterocarpus turbinatus. The studied three species have good capacity to
sequester organic carbon from the atmosphere. Fast growing exotic species has
comparatively higher rate of organic carbon accumulation. So fast growing species can be
recommended to plant to minimize adverse effect of carbon in the atmosphere.