【摘要】 本文对桂林水生植物的种类、植物区系以及植被组成的特征作了概括性的探讨.结果表明,桂林水生高等植物种类较为丰富,而且具有明显的热带亚热带性质.在已知的31科53属82种植物中,苔藓植物1科1属1种,蕨类植物4科4属4种,被子植物26科48属77种,它们的生活型可分为挺水、浮叶、漂浮和沉水4个类型.桂林的水生植被根据组成植物种类及其生活型的差异分为沉水、浮水和挺水三个水生植被亚型14个群系,它们的分布具有一定规律性,而且具有世界分布和温带分布的性质.更多还原

【Abstract】 The present peper deals with aquatic higher plants which have been found so far in Guilin . They comprise 81 species, 53 genera and 31 families. 44 species are emerging ones covering about 53.4% of the total number of species in Guilin, 21 are submerged ones, about 25.6%, 11 are leaf-floating ones, about 13.4% and 6 are floating ones, 7.3%There are three aquatic vegetation types with fourteen communities commonly found in Guilin. They are as follows:1. Emerging types. Nelumbo nucifera community, Sagittariaa sagittifolia var. sin-ensis community, Eleocharis tuberosa community, Zizania latifolia community and Oryza sativa community.2.Floating types. Azolla imbricata community, Spirodela Polyrhiza community, Eichhornia crassipes community and Alternanthera philoxeroides community3. Submerged types:Potamogeton malaianus community, Vallisneria sp., Hydrilla verticillata community, Ceratophyllum demersum community, Hydrilla verticillata, Cer-atophyllum demersum community, and Myriophyllum spicatum community.更多还原