桃源洞国家级保护区资源冷杉种群动态  

Living Situation of Endangered Abies beshanzuensis var. ziyuanensis in Taoyuandong National Nature Reserve

作　　者：刘羽霞 廖文波[2] 王蕾[3] 刘忠成[3] 阿尔孜古力 任可心[3] 

机构地区：[1]东北师范大学地理科学院,吉林长春130024 [2]中山大学生命科学学院广东省热带亚热带植物资源重点实验室,广东广州510275 [3]首都师范大学资源环境与旅游学院,北京100048

出　　处：《首都师范大学学报（自然科学版）》2016年第3期51-56,共6页Journal of Capital Normal University：Natural Science Edition

基　　金：国家科技基础性工作专项重点项目(2013FY111500)

摘　　要：本文通过对湖南省桃源洞国家级自然保护区香菇棚分布点资源冷杉(Abies beshanzuensis var.ziyuanensis)进行每木调查,制作存活率曲线、死亡率和消失率曲线,研究了该分布点资源冷杉的种群动态.结果表明:(1)2004-2013年资源冷杉种群数量从163株降至81株,下降50.3%.(2)该种群的年龄结构为衰退型,II至IV级小树死亡率较低,IV至VI级的资源冷杉死亡率较高,死亡率的高峰期出现在VII级,为80%.(3)群落乔木第一层是资源冷杉和杉木(Cunninghamia lanceolata),第二层是毛竹(Phyllostachys heterocycla),伴生树种仅有少量吴茱萸叶五加(Acanthopanax evodiaefolius)、缺萼枫香(Liquidambar acalycina)、多脉青冈(Cyclobalanopsis multinervis)和亮叶桦(Betula luminifera).(4)香菇棚分布点的资源冷杉受到强烈的人为破坏和干扰,保护工作亟待加强.Abies beshanzuensis var. ziyuanensis, a rare and endangered plant, is one of the first-class nationally protected species in China. We investigated the community structure of Abies beshanzuensis var. ziyuanensis in Xianggupeng of Taoyuandong National Nature Reserve Hunan Province, and analyzed its＇ population dynamics according to the static life table. The results showed that： （1） Volume of Abies beshanzuensis var. ziyuanensis in Xianggupeng fell by 50.3% in the period of 2004--2008, and the volume between 2008 and 2013 declined by 12%. （2） The age structure displayed a declined pattern. The mortality of the saplings （DBH classes between II to IV） was low, and the mortality of the trees（ DBH classes between IV to VI） was high. Mortality peak appeared in the VII DBH class, 80%. （3） Arborous layer of the community could be divided into two layers. The dominant species in the first layer were Abies beshanzuensis var. ziyuanensis and Cunninghamia lanceolata, and the dominant specie in the second layer was Phyllostachys heterocycla. There is a small amount of associated tree species included Acanthopanax evodiaefolius, Liquidambar acalycina, Cyclobalanopsis multinervis, Betula luminifera. （4） Abies beshanzuensis var. ziyuanensis in the Xianggupeng is under the intense human disturbance and damage, protection needs to be strengthened.

关 键 词：资源冷杉 种群动态 濒危植物 湖南 桃源洞 

分 类 号：Q948[生物学—植物学]