An Inventory of Vascular Flora of the Lalmai Hill Area Of Cumilla District, Bangladesh

IF 0.6 4区 生物学 Q4 PLANT SCIENCES Bangladesh Journal of Plant Taxonomy Pub Date : 2022-12-27 DOI:10.3329/bjpt.v29i2.63527
Shayla Sharmin Shetu, G. M. Hossain, Saleha Khan, M. A. Rahim
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Abstract

In this study, the vascular flora of the Lalmai hill area of the Cumilla district has been thoroughly explored. This study reveals the occurrence of 923 species of vascular plants under 594 genera and 141 families in the study area, which represents 23.75% of the total 3886 plant species reported from Bangladesh until now. About 68.15% of these species are native and 31.85% are exotic to Bangladesh. Pteridophytes are represented by 30 species belonging to 21 genera and 11 families, whilst Gymnosperms are represented by eight species under seven genera and six families. Magnoliopsida (dicotyledons) comprises 661 species, including four subspecies and two varieties, from 429 genera and 96 families, accounting for 71.54% of the vascular flora of the study area. Liliopsida (monocotyledons) represents 225 species under 137 genera and 28 families, making up 24.35% of this flora. In Magnoliopsida, Fabaceae with 55 species is the largest dicot family, followed by Asteraceae, Malvaceae, Euphorbiaceae, Lamiaceae and Rubiaceae. Most of the species of Liliopsida (68%) are represented by the five families viz., Poaceae, Cyperaceae, Araceae and Commelinaceae. Poaceae with 75 species is the largest monocot family, followed by Cyperaceae, Orchidaceae, Araceae and Arecaceae. The genus Cyperus is the largest in the study area. The species Antidesma roxburghii Wall. ex Tul. of Phyllanthaceae is rediscovered in Bangladesh. Most of the Magnoliopsida and Liliopsida are herbs (59.80%), which are followed by trees (21.02%), shrubs (17.23%), and palms (1.41%). About 64.57% of the species are recorded as wild, but a significant percentage (27.41%) is planted and cultivated (8.02%). The majority of the species are found to grow in eight categories of habitat viz., roadside, fallow land, homestead, woodland, garden, scrub jungle, agricultural field and grassland. Eight plant species, listed in the Red Data Book of Bangladesh including six as Data Deficient (DD), one Not Evaluated and one Endangered (EN) species, are harboured in the study area. We strongly recommend the adoption of a master plan for minimizing all major threats to the vegetation and habitats of this area and sustainable development, utilization and conservation of its plant resources. Bangladesh J. Plant Taxon. 29(2): 203-240, 2022 (December)
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孟加拉国Cumilla区Lalmai山区维管植物区系调查
在本研究中,对Cumilla区Lalmai山地区的维管束植物区系进行了深入的研究。本研究揭示了研究区内141科594属923种维管植物的分布,占孟加拉国迄今报告的3886种植物的23.75%。这些物种中约68.15%为本地物种,31.85%为孟加拉国外来物种。蕨类植物有11科21属30种,裸子植物有6科7属8种。木兰目(双子叶植物)包括96科429属661种,包括4个亚种和2个变种,占研究区维管植物区系的71.54%。Liliopsida(单子叶植物)代表28科137属225种,占该植物区系的24.35%。木兰目植物中,双子叶植物科植物最多,有55种,其次是菊科、锦葵科、大戟科、Lamiaceae和茜草科。Liliopsida的大多数物种(68%)以五个科为代表,即Poaceae、莎草科、天南星科和鸭跖草科。禾本科有75种,是最大的单子叶植物科,其次是莎草科、兰科、天南星科和槟榔科。莎草属是研究区内最大的莎草属。该种刺梨Antidesma Wall。前塔尔。在孟加拉国重新发现了Phyllantheae的一种。木兰目和百合目大部分为草本植物(59.80%),其次是树木(21.02%)、灌木(17.23%)和棕榈树(1.41%)。约64.57%的物种被记录为野生物种,但有很大一部分(27.41%)是种植和栽培的(8.02%)。大多数物种生长在八类栖息地,即路边、休耕地、宅地、林地、花园,灌木丛、农田和草地。孟加拉国红色数据手册中列出的八种植物物种,包括六种数据不足(DD)物种、一种未评估物种和一种濒危(EN)物种,均栖息在研究区域内。我们强烈建议通过一项总体规划,最大限度地减少对该地区植被和栖息地的所有主要威胁,并可持续开发、利用和保护该地区的植物资源。孟加拉国植物分类学杂志。29(2):203-242022(12月)
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来源期刊
CiteScore
0.42
自引率
44.40%
发文量
12
审稿时长
6 months
期刊介绍: Bangladesh is a humid, subtropical country favouring luxuriant growth of microorganisms, fungi and plants from algae to angiosperms with rich diversity. She has the largest mangrove forest of the world in addition to diverse hilly and wetland habitats. More than a century back, foreign explorers endeavoured several floral expeditions, but little was done for non-vasculars and pteridophytes. In recent times, Bangladesh National Herbarium has been carrying out taxonomic research in Bangladesh along with few other national institutes (e.g. Department of Botany of public universities and Bangladesh Forest Research Institute).
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