内蒙古双合尔湿地自然保护区种子植物区系研究

文章对双合尔湿地自然保护区种子植物的组成特征、区系地理成分进行了分析。结果表明:保护区有种子植物55科178属323种,植物种类较贫乏,其中被子植物占总数的99.7%。科属组成分析表明,区系组成以大科、单种属和寡种属为主,科的优势现象显著。科属地理成分分析表明,区系地理成分多样且复杂,联系广泛,区系具有明显的温带性质,起源新老兼备,以新生进化成分为主。

Floristic Analysis of Spermatophyte in Shuangheer Wetland Nature Reserve of Inner Mongolia

The composition characteristics and floristic geographic element of spermatophyte have been analyzed in Shuangheer Wetland Nature Reserve. The results show that there were 323 native species belonging to 178 genera in 55 families, The number of angiosperm accounts for 99.7 % of all species.The spermatophyte were relatively indigent. Based on the analysis on the geographic element of dominant family and genera, multi-specific family, mono-specific genera and oligo-specific family are the basic property for flora in this district. The advantage phenomenon is notable through analyzing the family composition. Based on the analysis on the geographic element of family and genera, the geographic elements of the flora was of complexity and multiplicity and the temperate element characteristics were the typical features of local flora. Both palaeo-elements and neoelements can co-exist in this region, but the neo-elements are dominant.