摘要
在武汉市主城区及近郊26个典型城市湖泊湿地植物物种和群落类型调查的基础上,对湖泊湿地维管束植物组成、地理成分和生态适应特征等进行了分析。结果表明,武汉市城市湖泊湿地植物资源丰富,本次共记录到维管束植物361种(含变种和变型),分属于82科231属,其中被子植物是主要类型;武汉市湖泊湿地维管束植物地理成分复杂,兼有地带性、隐域性和起源上古老性的特点,但特有属、种匮乏,其中蕨类植物表现出明显的隐域性特征;种子植物分属于14种地理分布类型,世界分布、泛热带分布和北温带分布3种地理分布类型所占比例较大,表现出明显的亚热带湿地植物区系特征。同时,湿地植物生活型以草本植物为主,一年生和多年生草本分别占总种数的37.4%和32.7%。在所有水分生态适应型中,中生植物的种类最多,共164种,占总种数的45.4%,反映出武汉市湖泊湿地维管束植物群落逐渐向中生植物群落演替。
The species composition and the ecological adaptation of vascular plants in Wuhan lake wetlands were analyzed based on field investigations of the species and communities of typical lake wetlands in central urban and suburb.The results showed that,plant resources in urban lake wetlands in Wuhan were very abundant and included 361 vascular plant species,which belonged to 82 families and 231 genera,in which the main category was angiosperm.The geographical composition of the vascular plants was complex and widely associated with other florae,and showed both transitional and anciently originated characteristics,but the endemic species were very rare.The pteridophytes in urban lake wetlands in Wuhan showed obviously intrazonality.The seed plant among the 14 areal-types had a large proportion of the cosmopolitan,pantropic and north-temperate distribution types,which implied obvious subtropical flora characteristics.Meanwhile,the dominant life-form of wetland plants was perennial herbaceous and annual herbaceous which accounted for 37.4% and 32.7% of total lake wetland species,respectively.The mesophyte,with 164 species which accounted for 45.4% of the total wetland plant species,was the dominant type among the all types of the water-based ecological adaptation,which indicated that the vascular plant community had a succession to the stage of mesophyte community in Wuhan lake wetlands.
出处
《湿地科学》
CSCD
2010年第3期279-286,共8页
Wetland Science
基金
武汉市建委科技项目(2006016)
园林科研专项项目资助
关键词
武汉市
湖泊湿地
维管束植物
物种组成
生态适应
Wuhan
lake wetland
vascular plant
species composition
ecological adaptation
