绵阳市湿地维管植物区系组成及其特征分析

On Flora Composition and Characteristics of Wetland Plants in Mianyang City

在实地调查及参考相关资料的基础上,分析了绵阳市湿地维管植物的区系组成及地理成分特征,旨在为湿地资源的保护和利用提供基础数据.研究结果表明:绵阳市有湿地维管植物68科172属281种,物种多样性较为突出;单种科、寡种科和单种属、寡种属是植物区系的主体,区系组成结构较为复杂;科级区系中世界分布占63.24%,反映了湿地植被的隐域性和湿地植物的广布性;属的区系成分中有14个地理分布区类型,其中热带分布占37.21%,温带分布占29.07%,显示了植物区系的热带和温带性质.

Based on field investigations and reference data,the flora composition and geographical element characteristics of wetland vascular plant in Mianyang have been studied to provide basic data of conservation and utilization of the wetland resources.The results show that the 281 wetland vascular plant species belong to 172 genera and 68 families,and the species diversity is obvious.The single-species family,fewspecies family,the single-species genera and few-species genera are the main part of the flora,and the structure of flora is relatively complex.The widespread type accounts for 63.24% of all the families in the areal-types of families,which reflect the azonal feature of the wetland vegetation and the cosmopolitan feature of the wetland plants.The 172 genera of vascular plants have 14areal-types.The tropic type and temperate type account for 37.21% and 29.07% of all the genera respectively,revealing the tropical and temperate feature of the flora of vascular plants.