【摘要】 在野外植物调查的基础上，分析了内蒙古额尔古纳国家湿地公园中种子植物的科和属的组成以及区系特征，以期为该区植物资源的保护与合理利用提供基础资料。研究结果表明，内蒙古额尔古纳国家湿地公园中共有种子植物71科270属525种，分别占内蒙古自治区种子植物科、属、种数量的55.91%、39.19%和21.52%；菊科(37属86种)、禾本科(26属44种)、蔷薇科(18属42种)、毛茛科(15属35种)和豆科(10属25种)的合计属数和合计种数分别占总属数和总种数的39.26%和44.19%，其在该湿地公园的种子植物组成中占据主导地位；单种属和寡种属的数量分别占总属数的63.70%和27.80%；科的分布区类型分属4个分布区类型和2个变型，温带属性科的数量占非世界分布科数量的55.26%；属的分布区类型分属于12个类型及8个变型，其中温带属性属的数量占非世界分布属数量的94.57%，说明该该湿地公园的种子植物区系具有明显的温带性质；在该湿地公园的种子植物中，无特有植物物种分布。更多还原

【Abstract】 In order to provide basic data for the protection and rational utilization of plant resources, the composition and floristic characteristics of families and genera of seed plants were analyzed in Inner Mongolia Ergun National Wetland Park on the basis of field vegetation investigation. The research results showed that there was a total of 525 species of seed plants in the Park, belonging to 71 families, 270 genera,accounting for 55.91%, 39.19%, and 21.52% of the total number of seed plant families, genera, and species in Inner Mongolia Autonomous Region, respectively. The total numbers of genera and species of Compositae(37 genera, 86 species), Poaceae(26 genera, 44 species), Rosaceae(18 genera, 42 species), Ranunculaceae(15 genera, 35 species) and Leguminosae(10 genera, 25 species) accounted for 39.26% and 44.19% of total numbers of genera and species of seed plants, respectively, which dominated the composition of seed plants in the wetland park. The number of single-species genera and few-species genera accounted for 63.70% and27.80% of total number of genera, respectively. The area-types of families were divided into 4 areal types and2 subtypes, with the number of the temperate components accounted for 55.26% of non-cosmopolitan families. The area-types of genera were divided into 12 areal types and 8 subtypes, with the number of temperate genera accounting for 94.57% of non-cosmopolitan genera. The above showed that the flora of seed plants in the wetland park had an obvious temperate nature. There was no distribution of endemic species of seed plants in the wetland park.更多还原