天宝岩自然保护区天然猴头杜鹃矮林林分结构与物种多样性调查  

Investigation on the Structure Characteristics Species Diversity of Rhododendron Simiarum Forests at Different Elevations in Tianbaoyan Nature Reserve

作　　者：李霖[1,2] 林立 游秀华 穆振北 刘君成 林美娇 何东进 LI Lin;LIN Li;YOU Xiuhua;MU Zhenbei;LIU Junchen;LIN Meijiao;HE Dongjin(Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002;Forestry Bureau of Yong'an City of Fujian Province,Yong'an,Fujian 366000;Wuyi University,Wuyishan,Fujian 354300)

机构地区：[1]福建农林大学,福建福州350002 [2]福建永安林业局,福建永安366000 [3]武夷学院生态与资源工程学院,福建武夷山354300

出　　处：《武夷学院学报》2019年第12期18-23,共6页Journal of Wuyi University

基　　金：福建农林大学科技创新项目(KFA17068A,KF2015032)

摘　　要：为揭示天然猴头杜鹃矮林群落的组成、变化和发展,运用数量生态学研究方法对天宝岩国家级自然保护区不同海拔天然猴头杜鹃林结构特征、物种多样性等进行研究。结果表明,各海拔天然猴头杜鹃林林木均以小径级木为主,且小径级木>中小径级木>中径级木>大径级木。各海拔的天然猴头杜鹃林,其乔木的高度结构均集中分布在5~10m,且占相应海拔所有乔木树种的比例均超过50%。在高、低海拔猴头杜鹃林中,物种多样性为乔木层>草本层>灌木层;在中海拔猴头杜鹃林中,则表现为灌木层>乔木层>草本层。The structure characteristics,species diversity,species spatial distribution and abundance distribution pattern,niche and inter-species association etc.of the Rhododendron simiarum forests at different elevations in Tianbaoyan nature reserve were studied in this paper.The results showed that:1)Rhododendron simiarum populations in the arbor layer at different elevations were mainly composed of small-diametered trees,that is,they mainly distributed at the range of 0 to 15 cm,and the number of small-diametered trees>medium-to-small>middle>big,besides,the number of small-diametered trees in Rhododendron simiarum forests at all elevations were more than that of any other diameter ranks,and the number of trees at the range of 0 to 15 cm at high elevations was much more than that at middle and low elevations,as for big-or middle-diametered trees and their proportion,the populations in Rhododendron simiarum forests at low elevations would dominate;2)The height of trees in Rhododendron simiarum forests at different elevations all distributed at the range of 5 to 10 cm,and the proportion was more than 50%as well;3)The species diversity displayed the trend as arbor layer>herb layer>shrub layer in Rhododendron simiarum forests at high and low elevations;as for at middle elevations,it was shrub layer>herb layer>arbor layer;in addition,the variety of the vegetation decreased with the increase of the elevation,namely,high elevations<middle elevations≤low elevations.

关 键 词：天宝岩自然保护区 猴头杜鹃 天然林 数量特征 林分结构 物种多样性 

分 类 号：Q948.15[生物学—植物学]