江苏省高邮市植物多样性与区系特征分析

Plant Diversity and Floristic Characteristics in Gaoyou County,Jiangsu Province

针对江苏省高邮市进行陆生植物及水生植物调查,分析了科、属和种水平上的多样性及植物属的区系特征。调查表明:陆生维管束植物556种,分属128科392属,以蔷薇科植物最多,共有38属59种,在属水平上,蓼属植物最多,共有9种;水生植物45种,分属24科37属,以禾本科和眼子菜科植物最多,分别有5属5种和2属5种,在属水平上,眼子菜属植物最多,共有4种。植物区系分析表明:该区域陆生维管束植物以泛热带分布型和北温带分布型为主,占总属数(不包括世界分布属)的43.9%;水生植物以泛热带分布型为主,后者占总属数(不包括世界分布属)的64.3%。综合来看,植物区系特征反映了该区热带向北温带过渡的气候特点,此结果增强了对江苏省高邮市植物多样性和区系特征的认识,为植物资源保护和植被恢复提供了数据支持。

We investigated terrestrial and aquatic ecosystems in Gaoyou County,Jiangsu Province,and analyzed the diversity and floristic characteristics of plant genera at family,genus and species levels.The investigation show that there were 556 species of terrestrial vascular plants,belonging to 128 families and 392 genera,the most of which were rosaceae(38 genera and 59 species),and Polygonum(9 species).There are 45 species of aquatic plants,which belong to 24 families and 37 genera.Gramineae and Potamogeton L.are the most common plants,with 5 species in 5 genera and 5 species in 2 genera respectively.At the genus level,the Potamogeton L.has the largest number of plants,with 4 species.The floristic analysis shows that the continental vascular plants in this region were mainly pantropical and North temperate distribution types,accounting for 43.9%of the total genera(excluding global distribution genera).The aquatic plants are dominated by pantropical species,which account for 64.3%of the total genera(excluding worldwide genera).In general,the floristic characteristics reflect the climatic characteristics of the transition from tropical to northern temperate zone in Gaoyou City,Jiangsu Province.This result enhances the understanding of plant diversity and floristic characteristics,and provides data support for plant resource protection and vegetation restoration.