高原湿地纳帕海水生植被调查与分析

Investigation and Analysis of Aquatic Vegetation In Napahai Wetlands

水生植被是湿地植被的基础和重要组成部分,体现着湿地生态系统的演化和发展方向。利用3S技术和典型取样的方法,通过对纳帕海水生植被的调查表明:水生植物有32种,隶属20科,可分为挺水植物、沉水植物、浮叶植物3个植被亚型和11个群系;水葱(Scirpus palustris)、水蓼(Polygonum hydropiper)、狭叶香蒲(Tupha angustifolia)、菜(Nymphoides peltatum)、狐尾藻(Myripophyllum spicatum)等是水生植被的优势种,而具有特别重要意义的物种,如杉叶藻(Hippuris vulgaris)、小黑三棱(Sparganium simplex)的数量减少或消失;水生植被分布区范围相对较小,其组成结构出现了退化趋势。

Aquatic vegetation,which embodied evolvement and developmental direction of wetland ecosystem,wasa base and important constitution.With the help of 3S technologies and the way of typical sample,investigation on aquatic vegetation of Napahai indicated: There was 32 species,belonging to 20 families.The aquatic vegetation was divided into 3 vegetation subtypes,which were emerging plant、submerged plant and floating leaves plant,including 11 formations.Dominant species of aquatic vegetation were S.palustris、P.hydropiper、T.angustifolia、N.peltatum、M.spicatum,etc.Especially important species,such as H.vulgaris、S.simplex,whose quantities decreased or disappeared.Areal range of aquatic vegetation was correspondingly less and its structure went to degradation.