浙江嵊泗小洋山岛植物分布特点和环境因子分析

浙江嵊泗小洋山岛发育至今,生物、非生物环境因子起着重要作用.其中,成岛年龄、高程、土壤种类、土壤养分、土壤含盐量、土壤p H值等影响着植物群落的形成、定居与演替.在多年野外调查基础上,以时空跨度,运用PC-ORD生态学多变量分析软件中的典范对应分析(CCA)二维排序方法,阐述了小洋山岛植物群落结构和植物多样性,并对该岛植物群落的演替现状和植被恢复进行了二维排序分析.结果表明:(1)小洋山岛植物群落结构复杂多样有维管植物300种;(2)人们对小洋山岛进行各种建设的同时且先锋植物群正在发生,并为研究分析该岛植被恢复及其整个生态系统提供了基础资料.

Distribution of plants and relationship between plants and environment factors in Small Yangshan Island,Zhejiang Shengsi

During the development of Small Yangshan Islands in Zhejiang Shengsi,biotic and abiotic environmental factors are playing important roles.Among them,the age and the height of the islands,soil type,nutriment,salinity and pH of soil influence the formation,colonization and succession of the plant communities.Based on years of fieldwork,the diversities of plant communities and species of Small Yangshan Island were analyzed with 2-D ordering of Canonical Correspondence Analysis (CCA) of ecological multivariate analysis.Meanwhile,the situation and vegetation restoration succession of plant community were analyzed.In results,(1) the structure of plant community of Small Yangshan Islands is diversiform and complicated.There are 300 species of vascular plants.(2) The pioneer plant group is taking place while people exploit Small Yangshan Islands.This paper provided basis data for research of vegetation restoration succession and the whole ecology system of Small Yangshan Island.