千岛湖姥山岛次生林群落学特征研究

对千岛湖姥山岛次生林的群落学特征进行研究,结果表明：千岛湖姥山岛天然次生林有蕨类植物3科3属3种,裸子植物3科4属4种,被子植物34科62属84种。其中,双子叶植物30科56属77种,单子叶植物4科6属7种。种子植物科的分布区类型可划分为8种类型,以热带、亚热带分布最多,其次是温带分布,再次是世界广布;属的分布区类型可划分为13类,以热带性成分为主,也兼有相当比例的温带性成分。根据Raunkiaer的生活型统计,该群落的生活型高位芽植物最多;群落中叶的性质以小型、单叶、草质、非全缘为主。群落垂直结构可以分为乔木层、灌木层和草本层。

Study on the Community Characteristics of the Secondary Forests on Laoshan Island of Qiandao Lake

The community characteristics of the secondary forests on Laoshan island of Qiandao Lake Region were studied. The vegetation floristic component analysis showed that there were 3 species in 3 genera and 3 families of Pteridophyta and 88 species in 66 genera and 37 families of spermatophyta, among which 4 species in 4 genera and 3 family were gymnosperms and 84 species in 62 genera and 34 families are angiosperms. There were 77 species in 56 genera and 30 families of dicotyledon and 7 species in 6 genera and 4 families of monocotyledon in the angiosperms. The areal types of spermatophytes could be divided into 8 kinds. The tropic type and subtropic type were dominant, the second was temperate type and the third was cosmopolitan type. At the genus level, the areal types can be divided into 13 kinds. The tropic type was dominant and there was also quite proportion of temperate type. By the method of Ruankiaer's life-form statistics, phaenerophytes were the dominant species of the community life form. The characters of leaf were mainly microphyllous, simple, herbaceous, unentire. There was a clear distinction between layers, and the vertical structure could be divided into tree layers, shrurb layer and herbaceous layer.