在滹沱河流域湿地植被74个样方中共有维管植物70种,隶属于22科57属.种子植物中含6属以上的科有菊科(Compositae)、莎草科(Cyperaceae)、禾本科(Gramineae)、豆科(Leguminosae),共有35属,占总属数的61.4%,其种数为42种,占总种数的60%.在各类植物区系地理成分中,世界分布属具有明显优势,说明湿地植物区系具有非地带性的特点.温带亚洲分布种在该区系中占有显著优势,充分显示了该流域湿地植物区系的温带特性.采用丰富度指数R、综合多样性指数(λ,H')和均匀度指数E1对该流域湿地植被的物种多样性的分析结果表明:DCA排序的第1轴,即土壤含水量与群系的R,λ,H'关系密切,而对E1影响不大.
There are 70 species of vascular plants belonging to 22 families and 57 genera in the 74 quadrats in Hutuo River valley, Shanxi. There are 4 families that include more than 6 genera in the seed plants. They are Compositae, Cyperaceae, Gramineae, Leguminosae. For the 4 families there are 35 genera, accounting for 61.4% of the total; 42 species, accounting for 60%. The flora analyses of the geographical element show: 1) Apparently predominant cosmopolitan genera indicate the non regional feature of wetland. 2) Remarkablely predominant species of temperate Asia fully indicate their temperate characteristic. Using diversity indices, the analysis shows that the first of the DCA ordination axes, the water gradient of soil, had a close relation to the species diversity, but a little relation to the evenness indices.