T. K. Nath , M. K. Hossain , M. K. Alam

Abstract

The paper describes the present tree stocks and speCIes diversity in four different compartments of Sitapahar Forest Reserve. Individual tree stems per hectare was highest in Compartment No. 28, whereas basal area per hectare was highest in Compartment No. 27. The Shannon-Weiner Diversity Index, Species Diversity Index, Richness Index and Evenness Index was highest in Compartment no. 51, but Index of Dominance was lowest in Compartment No. 51. Trends of diversity indices show that vegetation community in Compartment No. 51 is highly stable in comparison to remaining three compartments. The overall tree diversity in Sitapahar Forest Reserve is comparable to the tropical forests and emphasis was given to conserve the area.

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B. M. Khan , M. A. U. Mridha , M. K. Hossain , S. M. S. Huda

Abstract

Microbial inoculant as effective microorganisms (EM) was used to find out their influences on seedlings growth and development of Albizia procera (Roxb.) Benth. The seedlings were grown in a mixture of forest top soils and cowdung (3 : 1) kept in polybags. The EM solution at different concentrations (0.1, 0.5, 1, 2, 5 and 10%) was incorporated before and after a week of sowing the seeds. Germination as well as physical growth parameters like shoot and ischolar_main length, vigor index, collar diameter, leaf number, fresh and dry weight of shoot and ischolar_main and total biomass increment were measured. The nodulation status influenced by EM was also observed along with the measurement of chemical parameters viz. chlorophyll a, chlorophyll b and carotenoid. Both germination and the measured physical growth parameters were found significantly (P < 0.05) higher in seedlings treated with different concentrations of EM solution in comparison to control. Maximum growth was observed at 2% concentration followed by 5% and 1%. Nodulation was higher at 0.1% concentration of EM but it normally decreased with the increase of concentrations. Leaf pigments were also significantly (P < 0.05) higher in most of the treatments with respect to control. The results of the present study indicate that the EM technology might be useful to improve the growth of seedlings in the nursery. These also indicate that the associated beneficial organisms along with the polybag soils might be of value in improving the degraded soil or poor field soil for better nutrient and water uptake during the initial growth of transplanted seedlings.

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M. Mohiuddin , M. K. Alam , Shukla R. Basak , M. K. Hossain

Abstract

This study presents result of an ethnobotanical exploratory surveymade during 2003-08 on the plants diversity and their uses by the four tribes Bwam, Marma, Murang and Tanchangya in Bandarban Hill District, Bangladesh. The study revealed that 339 plant species are used by above tribes for different purposes. These species were classified on the basis of habit, habitat and use pattern. Based on habit 41.5% were herbs (including creepers and ferns), 17.4% under-shrubs, 25% shrubs, 7.6% trees and 8.5% were climbers. Habitat diversity revealed that 28.28% plants grow in hill slopes, 28.51% along streams, 12.72% along roadsides, 11.62% in shifting cultivation (jhums), 7.04% in scrub forests, 5.7 % in hilltops, 3.07% in fallow shifting farm lands (jhumS), and 2.63% in homesteads. Diversity in use pattern included medicinal (71.58%), wild food (11.69%), cultivated food (14.83%) and 1.90 % as aromatic, dye and soap yielding plant. Similarity index of plant uses showedthat the Marma tribe uses highest number of plant species (225 species).

Keywords

Ethnobotanical, Habit, Habitat, Use Pattern, Tribal, Bandarban

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M. K. Hossain , H. S. Hossain , U. K. Aryal

Abstract

No abstract

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M. Z. U. Nizam , M. K. Hossain

Abstract

The study was undertaken to find out the effect of seed weight of Albizia saman on seed germination and initial seedling growth in the nursery conditions. Seed germination per cent, growth of the seedlings and their fresh and dry weight (biomass) increased with the increase in the seed weight.

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M. K. Hossain , S. A. Islam , M. Zashimuddin , M. A. Tarafdar , Q. N. Islam

Abstract

Growth and biomass production of some Acacia and Eucalyptus species/seedlots planted in the Silvicultural Research Station, Madhupur, Tangail was studied. Results show that Acacia auriculiformis - 13499 and Eucalyptus urophylla - 13011 produced higher growth and biomass in comparison to other species/seedlots. Data reveal that encroached Sal forest areas in central and northern zone of Bangladesh may be reforested with these short rotation fast growing exotic species for the immediate supple of fuel wood and small posts etc.

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A. Mamun ¹, M. Akhter Hossain ¹, M. K. Hossain ¹, S. Alam ²

Affiliations
1 Institute of Forestry and Environmental Sciences University of Chittagong, BD
2 Forest Botany Division, Bangladesh Forest Research Institute, Soloshahar, Chittagong, IN

Abstract

Diversity and composition of tree species of secondary Dipterocarp hill forests in Chunati Wildlife Sanctuary of Chittagong was quantified through 37 sample plots of 20 m x 20 m in size taken randomly over the period of December 2012 to June 2013. A total of 993 individual trees having ≥5 cm dbh (671 trees ha^-1) of 99 species belonging to 73 genera and 36 families were recorded from the forests of Chunati. The forest has diverse floristic resources that seemed from the Shannon Wiener's diversity index (3.353), Margalef's richness index (14.201) and Simpson's dominance index (0.090). Total basal area of tree species was 12.47 m² ha^-1, where Dipterocarpus turbinatus showed highest basal area (2.62 m² ha^-1) followed by Acacia auriculiformis (1.39 m² ha^-1 ). Importance Value Index (IVI) was found maximum (40.11) for Acacia auriculiformis followed by Tectona grandis (16.46) plantation species. On the other hand, importance value Index was highest for Dipterocarpus turbinatus (25.10) followed by Ficus hispida (19.76) for natural species.

Keywords

Chunati, Composition, Diversity Index, Species Accumulation Curve, Importance Value Index.

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