北京湿地维管植物区系研究

记录了分布于北京地区的典型湿地维管植物266种7变种1变型，共274个分类群，隶属于58科144属。从种一级的水平对这274个分类群进行分析，可分为14个分布区类型，其中温带性质的种187种，为整个区系成分的主体，另有世界广布种45种，热带性质的种30种，中国特有种12种。就北京湿地维管植物区系特征而言，其种类组成与华北其他地区湿地存在着相似性，温带成分占优势地位，并存在一些古老孑遗种类及特有种。此外，还对区系成分中的受危种和外来种进行了讨论。

Study on the Flora of Vascular Plants of Wetland in Beijing

The typical vascular plants of wetland in Beijing comprise 266 species,7 varieties and 1 form,which belong to 144 genera and 58 families.Based on the species level,the geographic distribution of vascular plants in the flora can be divided into 14 types.The total of temperate species is 187,which contribute to the flora a lot,while there are 45 cosmopolitan species,30 tropical species and 12 Chinese endemic species.As to the flora of vascular plants of wetland in Beijing,its constitution is familiar with the flora of wetland in other provinces of North China.There is a dominance of temperate species,and the flora as well as contains some archaic species and endemic species.Furthermore,threatened species and invasive species are also discussed.