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首页> 外文期刊>Bangladesh Journal of Plant Taxonomy >A Preliminary Taxonomic Study on the Flora of Rangpur District, Bangladesh
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A Preliminary Taxonomic Study on the Flora of Rangpur District, Bangladesh

机译：孟加拉国楞区植物群初步分类研究

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摘要

This study demonstrates that the vascular flora of the Rangpur district area consists of 825 species under 537 genera and 139 families. The pteridophytes and gymnosperms are represented by 25 and seven species, respectively, whereas the angiosperms by 793 species including 582 species of dicotyledons (Magnoliopsida) and 211 species of monocotyledons (Liliopsida). Poaceae with 67 species, representing 8.12% of the flora, is appeared as the largest family, and followed by Asteraceae, Fabaceae, Araceae, Malvaceae and Euphorbiaceae that collectively constitute 17.94% of this flora. Persicaria comprising 10 species is recorded as the largest genus, and followed by Ficus, Euphorbia, Solanum, Albizia and Brassica. About 59.71% taxa of this flora are herbs, 21.71% trees, 14.72% shrubs and the rest are palms, lianas, and bamboos. Erect herbs forming 35.22% of the flora comprise the most common life-form. In this flora, almost 64.29% taxa are native and the rest 35.71% are exotic. Nearly 62.61% taxa of the flora are found in wild, 26.90% as planted and 10.49% as cultivated. About 35.46% of the species commonly occur throughout all upazilas of this district. Most of the species are harboured in fallow lands, roadsides, gardens, and homesteads. All species of this district flora are known as economically useful. Most of its habitats and ecosystems are exposed to different threats. Adequate measures with effective management plans should be adopted and implemented for the sustainable use, improvement and conservation of this precious flora.
机译：该研究表明，仰卧区地区的血管植物区由825种属于537个属和139个家庭组成。蕨类植物和裸子植物分别由25岁和七种物种代表，而缓解植物793种，包括582种双旋肌（magnoliopsida）和211种单圈子（Liliopsida）。具有67种物种的Poaceae，占菌群的8.12％，出现为最大的家庭，其次是Asteraceae，Fabaceae，Araceae，Malvaceae和大戟属，统称为这一植物的17.94％。包含10种的Persicaria被记录为最大的属，并且其次是Ficus，大戟，茄属菌，阿尔维西亚和芸苔。该植物区群的大约59.71％的植物是草药，树木21.71％，灌木14.72％，其余的是棕榈树，莲花和竹子。形成35.22％的植物的直立草药包括最常见的生命形式。在这种植物群中，近64.29％的分类群是本土的，其余35.71％是异国情调的。在野外发现近62.61％的植物群，26.90％，种植的26.90％和栽培10.49％。大约35.46％的物种常见于这个地区的所有Upazilas。大多数物种在休耕地，公路，花园和宅基地中都是困境的。所有这个地区植物区的物种都被称为经济上有用。其大部分栖息地和生态系统都暴露于不同的威胁。应采取有效管理计划的充分措施，并为可持续使用，改进和保护这种珍贵的植物群。

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