黑龙江兰远草原自然保护区植物的种类组成与生活型谱分析

Composition and Life Form Spectrum Analysis of Plant Species in Lanyuan Grassland Nature Preserve Area of Heilongjiang Province

基于保护区植物名录和野外调查统计数据,采用Raunkiaer生活型分类系统,对兰远草原自然保护区的植物种类组成生活型谱进行分析。结果表明保护区内植物全为被子植物,共有363种,分属177属,53科。该区植物生活型组成以草本地面芽植物为主49.59%,其次一年生植物占22.87%;地下芽植物种类占21.49%;地上芽和高位芽很少,占3.86%和2.20%。总体上反映了该区夏季温暖湿润,冬季漫长而寒冷的气候特点。

On basis of plant list and field survey statical data in the preserve area, the plant type life form spectrum of Lanyuan grassland nature preserve area is analyzed with Raunkiaer ecological classification system. The result shows all plants are angiosperms in the preserve area that including 363 types, 177 genus and 53 families. Life form compositions of the area are mostly Herbaceous ground cover plants that takes up 49.59%, annual plants takes up 22.87% and geophytes takes up 21.49%. The proportions of surface plants and high bud are 3.86% and 2.20% which is very low in compare. The result generally reflects the climate characteristics of long hot summer and long cold winter in the area.