黔东南州篦子三尖杉群落结构特征研究  

Community structure characteristics of Cephalotaxus oliveri in the Qiandongnan Miao and Dong Autonomous Prefecture

作　　者：冯邦贤 韦海霞 

机构地区：[1]铜仁市林业局,铜仁554300 [2]铜仁学院生物与农林工程学院,铜仁554300

出　　处：《湖南林业科技》2017年第4期34-42,共9页Hunan Forestry Science & Technology

基　　金：“黔东南森林植物种质资源调查”项目

摘　　要：篦子三尖杉为国家Ⅱ级保护植物。为探索篦子三尖杉不同群落类型之间物种多样性的规律,比较群落结构和物种多样性的差异性,采用样方调查方法分析了黔东南州凯里市、镇远县、黎平县和台江县的4个篦子三尖杉群落的物种组成及群落结构。结果表明:4个篦子三尖杉群落共有维管植物54科87属102种,其中,蕨类植物5科、裸子植物2科、被子植物47科;4个群落中高位芽植物所占比例最大,一年生植物所占的比例最小;4个篦子三尖杉群落的成层现象均非常明显,基本上可以分为乔木层、灌木层和草本层3个层次,篦子三尖杉是灌木层中的优势种;受人为活动的影响,4个群落物种多样性水平表现出明显的差异性,物种多样性水平从高到低的顺序是:台江>凯里>镇远>黎平;篦子三尖杉缺乏成年个体和幼苗,种群属于衰退型。Cephalotaxus oliveri is the second class conservative plant of China, and it belongs to Cephalotaxus of Cephalotaxaceae. The species composition and structural characteristics of C.oliveri grows in Kaili, Zhenyuan, Liping and Taijiang County of the Qiandongnan Miao and Dong Autonomous Prefecture were studied with plot investigation. The results showed th a t： Totally, 102 species of plants were recorded in the 4 C.oliveri communities, and they were distributed into 54 families and 87 genera. That concluded 5 family pteridophyte, 2 families gymnosperms and. 47 families angiosperms. In the 4 C.oliver i communities, the proportion of phanerophytes is the largest, and the proportion of therophytes is the least. The community structure of the 4 C.oliveri communities has a characteristic of obvious stratification phenomenon and simple structure, the community is basically divided into tree layer, shrub layer and herb layer three levels, and C.oliveri is the dominant species in the shrub layer. The complexity of the diversity from high to low is Taijiang 〉 Kaili 〉 Zhenyuan 〉 Liping. 4 C.oliveri communities lacks of adult and seeding, the population belongs to declined type.

关 键 词：篦子三尖杉 群落结构 黔东南州 

分 类 号：S718.54[农业科学—林学]