南京近郊自然湿地维管植物群落特征  

Characters of vascular plant communities in natural wetlands of Nanjing Suburb.

作　　者：张光富[1] 陈会艳[1] 陈瑞冰[1] 高邦权[1] 

机构地区：[1]南京师范大学生命科学学院,南京210097

出　　处：《生态学杂志》2007年第2期145-150,共6页Chinese Journal of Ecology

基　　金：江苏省教育厅资助项目(04KJD180105)。

摘　　要：选择南京近郊2处自然湿地为研究对象,采用GPS定位、野外标本采集、Braun-Blanquet多盖度等级法和Shannon-Wiener物种多样性、Simpson生态优势度和群落均匀度指数研究南京湿地植物群落的种类组成、群落类型及其数量特征。结果表明南京湿地有维管植物104种,隶属于93属45科,其中有国家Ⅱ级保护植物4种,包括水蕨、野大豆、野菱和莲;属和种的地理成分分析表明,该区维管植物区系以温带成分为主,同时热带成分也占一定的比例;该区湿地植被分为3个植被型,3个植被亚型,16个群系;湿地植物群落的物种多样性指数偏低,其中七里河湿地的物种多样性高于滁河入江口。根据南京湿地维管植物群落的特征,并结合当前存在的问题,提出南京近郊自然湿地的保护对策。By applying GPS orientation, field specimen collection and Brann-Blanquet Cover Abundance Scale Method, the plant species composition, community type, species diversity index, ecological dominance index, and community evenness index in two wetlands of Nanjing suburb were studied, and the results showed that there were 104 species of vascular plant, belonging to 93 genera and 45 families, among which, Ceratopteris thalictroides, Glycine soja, Trapa incisa and Nelumbo nucifera were the grade 11 rare and endangered plants protected by national law. Geographic element analysis of both genera took dominant position, and tropic elements and species demonstrated that temperate elements occupied definite proportion. The vegetations were classified into 3 vegetation types, 3 sub-vegetation types and 16 formations. The species diversity in the natural wetlands of Nanjing suburb was relatively low, being higher in Qilihe wetland than in that at the mouth of Chuhe. Countermeasures were put forward for the biodiversity protection of vascular plant communities in the natural wetlands of Nanjing suburb, based on the analysis of the characters of the plant communities and the existing problems.

关 键 词：自然湿地 维管植物群落 保护 南京近郊 

分 类 号：Q948[生物学—植物学]