东北温带森林早春类短命植物种类及区系分布

Species and Faunal Distribution of the Early Spring Ephemeroid Plants of Temperate Forests in Northeastern China

在对现有文献资料查阅和统计的基础上,结合早春类短命植物的生长周期特点,对东北温带森林早春类短命植物种类及区系分布特征进行了统计与分析.结果显示:东北地区有林下早春类短命植物60种,8个变种,15个变型,分属于8科22属.科的组成以毛茛科和罂粟科为主,包括早春类短命植物49种,占所有早春类短命植物的59.0%;紫堇属和银莲花属植物居多,占所有早春类短命植物的1/3以上.属的区系分为4个类型1个变型,其中北温带分布类型是早春类短命植物的主要成分,包括10属49种,其次为旧世界分布类型,包括6属11种.

Combining the growth cycles characteristics of early spring ephemeroid plants, this paper made statistics and analysis on the species and faunal distribution of the temperate forests in Northeastern China on the basis of the references and statistics of the flora and literature data. The results showed there were 60 species early spring ephemeroid plants in Northeast China,8 varieties and 15 variants,belonging to 8 families and 22 genera respectively. The families were mainly made up of Ranunculaceae and Papaveraceae, there were 49 species, accounting for 59. 0 percentage of all early spring ephemeroid plants. The dominant genera were Corydalis and Anemone,accounting for one third of all early spring ephemeroid plants. The fauna of genera were divided into 4 types and 1 variant. And the main component was the distribution type of north temperate zone, including 10 genera,49 species,the old world distribution type （6 genera 11 species） secondly.