Himchari National Park (HNP) was declared as a Protected Area (PA) in 1980 under the section 23(II) of Bangladesh Wildlife Preservation Act 1974 of the Government of the People’s Republic of Bangladesh. The total area of the HNP is about 1,729 ha (4,271.15 acres) under the jurisdiction of Cox’s Bazar South Forest Division, Cox’s Bazar district. Once the forest was very rich in flora and fauna, but many of the species have disappeared due to habitat destruction, over-exploitation, habitat fragmentation, fire hazard, encroachment, indiscriminate harvesting of tree species and Non-Timber Forest products. The study was conducted through extensive whole area survey and quadrat survey methods. A total of 117 tree species (having ≥ 5 cm dbh) belonging to 37 families was recorded from the HNP. Moraceae family possesses the highest species (14) followed by Mimosaceae (8), Euphorbiaceae (7), Myrtaceae (6) and 5 species each by Anacardiaceae, Caesalpiniaceae, Meliaceae and Verbenaceae. A total of 69 tree species (59%) was found as Least Concern (LC) representing maximum tree species among all the categories. Vulnerable, Endangered, Near Threatened and Critically Endangered tree species were represented by 16 species (14%), 4 species (3%), 2 species (2%) and 2 species (2%), respectively. It is necessary to take effective measures for the protection, sustainable management, proper utilization and conservation of tree species in an aim to conserve the forest genetic resources of the Himchari natural forests. J. Biodivers. Conserv. Bioresour. Manag. 2018, 4(2): 1-10
Abstract. Hossen S, Hossain MK, Hossain MA, Uddin MF. 2020. Quantitative assessment of tree species diversity of Himchari National Park (HNP) in Cox’s Bazar, Bangladesh. Asian J For 5: 1-7. The aim of the study was to assess the tree species composition, dominance, and quantitative distribution of tree species of Himchari National Park, Cox’s Bazar in Bangladesh through stratified random sampling method using sample plots (51) of 20 m x 20 m in size during the period of January 2017 to May 2018. A total of 961 stems (dbh ≥ 5 cm) of 88 tree species belonging to 64 genera and 37 families were enumerated where the stem density and basal area were 457.39 stem ha-1 and 10.979 m2 ha-1 respectively. On the other hand, the species diversity index, Shannon-Wiener’s diversity index, Shannon’s maximum diversity index, species evenness index, Margalef’s diversity index, and Simpson’s diversity index were 0.092, 3.733 ± 0.0071, 4.477, 0.834, 12.667 and 0.039 ± 0.0003 respectively. The highest Importance Value Index (IVI) was found for Acacia auriculiformis (23.23) followed by Tectona grandis (13.05), Gmelina arborea (12.66), Syzygium fruticosum (12.34), Casuarina equisetifolia (10.57), and Dipterocarpus turbinatus (10.55). The IVI value represents that Acacia auriculiformis possess highest dominance that is followed by Tectona grandis and Gmelina arborea. Percentage distribution of tree individuals into different height classes found in quadrats showed that height range 3 - <8 m had the highest (59.83%) percentage of tree individuals. On the other hand, different dbh (having dbh ≥5 cm) classes showed that most of the trees (65.97%) belonged to dbh range 5 - <15 cm. The outcome of present study suggests for the protection, sustainable management, and conservation of the tree resources of HNP, Cox’s Bazar, Bangladesh.
Purpose This study/paper aims to evaluate the floral richness of the central part of Chattogram city, Bangladesh. Chattogram is recognized as the largest port city and the commercial capital of Bangladesh, which confronts faster urbanization and swift infrastructure development. Green spaces in and around Chattogram city are shrinking sharply, which resulted in rapid loss of floral and faunal resources in this area. The present study was carried out from February 2018 to January 2019 to enumerate the vascular plant species of the Sulakbahar ward located in the central part of Chattogram City, Bangladesh. Design/methodology/approach The study area was categorized into 10 habitats to assess the variation of floral composition. The extensive whole area survey method was applied to record the flora from all sorts of plant habitats of the research area. Findings The study enumerated 418 vascular plant species under 315 genera and 120 families including natural, planted and cultivated from the study area. The habit form of the recorded plant composition indicated that herbs (35%) constitute the major plant category followed by trees (34%), shrubs (17%), climbers (12%), ferns (1%) and orchids (1%). The study also indicated that exotic species (50.3%) became dominant than native species (49.7%) in Chattogram city because of their scenic beauty, easy propagation and ornamental value to the city planners and inhabitants. Originality/value It appeared that floral resources of the Chattogram city area are in great threat due to aggressive and unplanned infrastructure development for housing, offices and institutions by replacing the green spaces. The study recommended that urgent protection measures should be taken to conserve and protect the existing floral resources for the well-being of the urban people.
The study was undertaken to determine the growth performance of Agar plantations (Aquilaria malaccensis Lamk.) at Forest Department (Harbang, Borduara and Fasiakhali) and private sector (Barlekha of Maulvibazar) plantations in Bangladesh. The study was conducted during January to June, 2016. Simple random sampling method was followed to collect data from 40 sample plots (20 m x 20 m) of 12-16 years old plantations. The results showed that the cylindrical volume increment was highest (19.19 m 3 /ha/yr) in 16 years old agar plantations at Barlekha. The mean annual increment in height (m) was also highest (0.92 m/yr) at Barlekha and the mean annual diameter increment (cm) was highest (1.12 cm/yr) in the 12 years old plantation at Harbang. The highest basal area (17.98 m 2 /ha) was found at Barlekha. The cylindrical volume (per hectare) of Harbang, Borduara, Fasiakhali and Barlekha were 72.59 m 3 , 161.18 m 3 , 148.75 m 3 and 307.08 m 3 respectively and the stems per hectare were 468, 975, 968 and 960 respectively for the same plantation sites. As it has favorable climatic condition for agar plantation, the Forest Department (FD) can raise agar plantations in denuded and encroached forest areas of Bangladesh. People participation in agar plantation and development of small entrepreneurship may improve the livelihood of the local farmers.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.