米草入侵对江苏省滩涂动物群落的影响

Influence of Spartina invasion to Jiangsu Province' s beach wetland animal community

调查共获滩涂动物标本738份。经过对标本逐一鉴定,它们是分别隶属于5门6纲17科的30种。其中双齿围沙蚕为优势种。从群落组成和数量分布、多样性指数、斯皮尔曼等级相关矩阵分析、物种丰富度、布雷-柯蒂斯聚类分析等方面,对江苏省滩涂湿地集中区盐城市三地(东台、大丰、射阳)6个采样点所获数据进行了分析。结果表明,互花米草等生物入侵对江苏省滩涂湿地土壤动物群落的物种数目有一定影响,主要体现在草滩区的生物多样性较低。互花米草的存在尽管为该地区的滩涂湿地动物群落提供了丰富的营养和必要的保障,但是由于互花米草等生物的入侵,造成了滩涂湿地土壤动物的采集环境发生了很大变化,采收起来变得非常困难,所以互花米草等生物的入侵还是给当地带来了危害。

The total of survey is 738 beach animal specimens.After identificated of specimens one by one,30 species belonged to 17 family in 6 Class of 5 Phylum.Perinereis aibuhitens is the dominant species.This article analyzed the composition of the community and the distribution of the number,diversity index,the spearman rank correlation matrix analysis,species richness,Bray-Curtis cluster analysis from six three-point （Dongtai,Dafeng,Sheyang） sampling data of Yancheng City of Jiangsu Province.The results showed that Spartina and other biological invasion on the beaches of Jiangsu Province wetland soil fauna species would not significantly affect and mainly reflecting in lower diversity index of grass area.The Spartina provided a wealth of nutrition and the necessary protection for the beach area of wetland animal communities.On the other hand,because of changing soil environment and making beach wetland animals to be collected very difficult,Spartina and other biological invasion are hazards to local.