Preprint Article Version 1 This version is not peer-reviewed

Structure and Composition of Plant Vegetation in Urban Area of Dhaka South City Corporation, Bangladesh

Version 1 : Received: 20 November 2017 / Approved: 21 November 2017 / Online: 21 November 2017 (03:43:54 CET)

How to cite: Jaman, M.S.; Jahan, I.; Jamil, M.; Helal, M.G.J.; Islam, M.S.; Azad, M.J.; Hossain, M.F. Structure and Composition of Plant Vegetation in Urban Area of Dhaka South City Corporation, Bangladesh. Preprints 2017, 2017110136 (doi: 10.20944/preprints201711.0136.v1). Jaman, M.S.; Jahan, I.; Jamil, M.; Helal, M.G.J.; Islam, M.S.; Azad, M.J.; Hossain, M.F. Structure and Composition of Plant Vegetation in Urban Area of Dhaka South City Corporation, Bangladesh. Preprints 2017, 2017110136 (doi: 10.20944/preprints201711.0136.v1).

Abstract

Plants are an important feature of urban ecosystems which provide numerous environmental and ecosystem benefits such as defenses against noise and air pollution and conservation of biodiversity. The aim of this study was to investigate the structure and composition of urban vegetation in different urban habitats like roadsides, parks, gardens and playgrounds in Dhaka South City area. Stratified random sampling method was used in this study. A total of 221 plant species belonging to 63 families were identified and recorded. Among all plant species Swietenia macrophylla, Polyalthia longifolia, Cocos nucifera, Samanea saman, and Artocarpus heterophyllus are recorded as the most dominant. Most of the tree and shrub population were found between 6-9 m and 1-3m height classes whereas most of tree and shrub population were found in between 10-15cm dbh classes. Highest IVI was found for Swietenia macrophylla (193.22%) followed by Polyalthia longifolia (184.59%), Samanea saman (138.37%), Cocos nucifera (79.9%) and Delonix regia (68.27%) respectively. Average frequency, density, dbh and basal area were found 46.82%, 138.28 tree ha-1, 458.59 cm ha-1 and 12.33 m2 ha-1 respectively. Findings of this study reveals that structural attributes of plant represent quite young and still developing vegetation. This research will help to plan for future green infrastructure which will maintain ecosystem function, therefore, providing longer term benefits for the city dwellers.

Subject Areas

diameter at breast height; basal area; frequency; density; important value index

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