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FOR AUTHORS Ekologia - Ecology 2010 Ecology Vol.29, No.3, p.307-325, 2010
FOR AUTHORS Ekologia - Ecology 2010 Ecology Vol.29, No.3, p.307-325, 2010
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Ecology Vol.29, No.3, p.307-325, 2010 |
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| Title: Analysis of regeneration and species diversity along Human induced disturbances in the Kassalong Reserve Forest at Chittagong Hill Tracts, Bangladesh | ||
| Author: SUMITRA DEWAN, HARALD VACIK | ||
| Abstract: The forests of the Kassalong Reserve are some of the large important and productive government managed reserve forests located in the north forest division of the Chittagong Hill Tracts of Bangladesh. Legal or illegal logging, shifting cultivation with short rotation periods and fires used as a preparatory measure for shifting cultivation are important causes for a decreasing forest cover in the area. Based on different categories of disturbances (near to natural forest type-NNF, moderately disturbed forest type-MDF and highly disturbed forest type-HDF) 45 circular sampling plots with 9.77 m radius were chosen randomly for data investigation. The chemical status (pH, OM, N, K, P, S, B, and Zn) of the topsoil was investigated with 5 replications for each category. The natural regeneration was studied in accordance with three different height classes (150 cm). In total 91 tree species (dbh of > 5 cm) were observed on the sample plots in the forest. The species richness declined with increasing disturbances. Introduction of species showed an adverse effect on forest diversity even though stand density increased. The regeneration in HDF had more or less the same density as in NNF but the species richness was the lowest. The species richness in MDF declined with increasing height classes as result of human interventions. The important value index of dominant tree species in the three different forest types varied. A discussion of the major findings of this study with comparable research studies allowed drawing conclusions on further research activities and conservation management activities in the Kassalong Reserve Forest. |
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| Keywords: natural regeneration, species richness, diversity, disturbances, soil analysis | ||
| Year: 2010, Volume: 29, Issue: 3 | Page From: 307, Page To: 325 | |
| doi:10.4149/ekol_2010_03_307 |
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