湖北龙感湖国家级湿地自然保护区粗梗水蕨群落的物种多样性  

Species Diversity of Ceratopteris Pteridoides Community at Hubei Longgan Lake National Wetland Nature Reserve in Hubei

作　　者：董元火 雷刚 高威[1,2] 李树华[3] 王贵雄[3] 

机构地区：[1]江汉大学生命科学学院,湖北省豆类(蔬菜)植物工程技术研究中心,湖北武汉430056 [2]华中农业大学植物科学技术学院,湖北武汉430070 [3]湖北省黄梅县第一中学,湖北黄冈430200

出　　处：《江汉大学学报（自然科学版）》2013年第5期72-75,共4页Journal of Jianghan University：Natural Science Edition

基　　金：国家自然科学基金资助项目(31170341);湖北省自然科学基金资助项目(2011CDB001);湖北省豆类(蔬菜)植物工程技术研究中心开放基金项目(2013-01)

摘　　要：采用样方法和α-多样性指数研究了湖北龙感湖国家级湿地自然保护区粗梗水蕨群落物种多样性。结果表明:与粗梗水蕨相伴生的物种主要有10科10属11种。粗梗水蕨群落群丛名为菰-水鳖,其群丛类型为挺水类。α-多样性指数分析显示粗梗水蕨群落辛普森指数(D)、香农威纳指数(H′)和Pielou均匀度指数(J)分别为0.846、1.939和0.809。人类干扰是导致湖泊水生植被和生物多样性降低的重要原因。建立保护点和迁地保护是保护该粗梗水蕨种群的有效措施。Species diversity of the endangered aquatic fern Ceratopteris pteridoides community at Hubei Longgan Lake national wetland nature reserve in China were surveyed using sample plot and α - diversity index. The main results are as follows： there were 11 plant species belonging to 10 families and 10 genera in the community in 2011, among which Zizania. Caduciflora, Hydrochai rs- dubia, Eichhornia crassipes, Polygonum hydropiper, Ceratophyllum demersum and Lemna minor were dominant species. The vegetation was called Zizania caduciflora-Hydrochai rsdubia Ass. α - di- versity index analysis revealed that Simpson index（D）, Shannon-Wiener diversity index（ H＇ ）, and Pielou evenness index （J） were 0. 846,1. 939 and 0. 809, respectively, indicating low levels of spe- cies diversity at the community. Human disturbance might be the main factor responsible for the re- duction of aquatic vegetation and biodiversity. Both establishing conservation spots and changing spots conservation are two important conservation strategies of the species.

关 键 词：龙感湖 国家湿地自然保护区 粗梗水蕨 濒危物种 物种多样性 

分 类 号：Q948.2[生物学—植物学] Q949.36