2021年10月17日 星期日
镜泊湖世界地质公园火山熔岩台地苔藓植物多样性分析
Analysis on diversity of bryophytes in volcanic lava platform of Jingpo Lake World Geopark
2020年 第29卷 第6期 页码[57-65]    下载全文[0.9MB]  
摘要

采用样方法对镜泊湖世界地质公园火山熔岩台地内16个样点80个样方的苔藓植物进行了实地调查、标本采集和种类鉴定,并对该区域苔藓植物的种类组成、优势类群、分布区类型、生境类型、水分生态类型和α多样性指数进行了分析。结果表明:共采集苔藓植物标本1 726份,含34科69属115种,其中,藓类植物门(Bryophyta)有26科57属95种,苔类植物门(Marchntiophyta)有8科12属20种;优势科(含6种及以上)有青藓科(Brachytheciaceae)、提灯藓科(Mniaceae)和绢藓科(Entodontaceae)等8个,优势属(含3种及以上)有青藓属(Brachythecium Bruch & Schimp.)、匐灯藓属(Plagiomnium T. J. Kop.)和绢藓属(Entodon Müll. Hal.)等9个,优势种(重要值在2.0%以上)有毛尖紫萼藓(Grimmia pilifera P. Beauv.)、提灯藓(Mnium hornum Hedw.)和匐灯藓〔Plagiomnium cuspidatum (Hedw.) T. J. Kop.〕等9个。该区域苔藓植物种的分布区类型有9个,其中,北温带分布型所占比例最高(48.7%),东亚分布型次之(24.3%),中国特有分布型占有一定比例(7.0%)。统计结果表明:72.2%的苔藓植物种类生长在岩石上,且80.0%的苔藓植物种类属于中生型。该区域不同环境中苔藓植物的Patrick丰富度指数、Shannon-Wiener多样性指数和Simpson优势度指数的变化规律一致,均表现为在熔岩台地与镜泊湖间区域最高,在熔岩台地边缘最低;而Pielou均匀度指数的变化规律则恰好相反。综上所述,镜泊湖世界地质公园火山熔岩台地苔藓植物种类丰富,多样性较高,优势类群的抗旱性和抗寒性均较强;并且,该区域苔藓植物主要生长在岩石上,地理成分具有明显的北温带性质。

Abstract

 Field survey, specimen collection and species identification of bryophytes in 80 quadrats of 16 sampling sites in volcanic lava platform. of Jingpo Lake World Geopark were carried out by quadrat sampling method, and species composition, dominant group, distribution type, habitat type, water ecological type and α diversity index of bryophytes in this area were analyzed. The results show that 1 726 bryophyte specimens are collected in total, including 115 species in 69 genera of 34 families, in which, Bryophyta contains 95 species in 57 genera of 26 families, Marchntiophyta contains 20 species in 12 genera of 8 families; there are 8 dominant families (containing 6 or more species) such as Brachytheciaceae, Mniaceae and Entodontaceae, etc., 9 dominant genera (containing 3 or more species) such as Brachythecium Bruch & Schimp., Plagiomnium T. J. Kop. and Entodon Müll. Hal., etc., 9 dominant species (importance value above 2.0%) such as Grimmia pilifera P. Beauv., Mnium hornum Hedw. and Plagiomnium cuspidatum (Hedw.) T. J. Kop., etc. There are 9 distribution types of bryophytes in this area, in which, the percentage of North Temperate is the highest (48.7%), followed by East Asia (24.3%), and Endemic to China accounts for a certain percentage (7.0%). The statistical results show that 72.2% of bryophyte species grow on rocks and 80.0% of bryophyte species belong to mesophyte. The change laws of Patrick richness index, Shannon-Wiener diversity index and Simpson dominance index of bryophytes in different environments in this area are consistent, which are the highest in the area between lava platform. and Jingpo Lake and the lowest in the edge of lava platform; while the change law of Pielou evenness index is just the opposite. In conclusion, the bryophytes in the volcanic lava platform. of Jingpo Lake World Geopark have rich species and high diversity, and the drought and cold resistances of dominant groups are relatively strong; in addition, bryophytes in this area mainly grow on rock, and their geographical component has evident north temperate characteristics.

关键词苔藓植物; 火山熔岩台地; 优势类群; 分布区类型; 生境类型; 水分生态类型; α多样性指数
Key wordsbryophytes; volcanic lava platform; dominant group; distribution type; habitat type; water ecological type; α diversity index
作者丛明旸1, 徐跃跃2, 唐录艳3
所在单位1. 江西师范大学 分析测试中心, 江西 南昌330022; 2. 南昌大学经济管理学院, 江西 南昌330031;3. 贵州师范大学生命科学学院, 贵州 贵阳550025
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基金项目国家自然科学基金资助项目(31700168); 江西省博士后研究人员日常经费资助项目(2019RC17); 江西师范大学青年英才培育资助计划项目(202006); 江西师范大学博士后科研启动金项目(12020739); 江西师范大学人才引进科研启动金项目(12019506)