文献类型：期刊文献

中文题名：滇西北云南红豆杉群落结构与更新特征

英文题名：Community structure and regeneration characteristics of Taxus yunnanensis in northwest Yunnan Province of Southwest China

作者：刘万德[1] 李帅锋[1] 张志钧[1] 苏建荣[1]

第一作者：刘万德

机构：[1]中国林业科学研究院资源昆虫研究所

年份：2012

卷号：31

期号：12

起止页码：3024-3031

中文期刊名：生态学杂志

外文期刊名：Chinese Journal of Ecology

收录：CSTPCD;;Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2011_2012】；

基金：国家林业局948项目(2011-4-03);云南省科技厅人才培养项目(2011CI072)资助

语种：中文

中文关键词：物种组成;物种多样性;大小结构;萌生;云南红豆杉

外文关键词：species composition; species diversity; stem size class; sprouting mode; Taxus yun-nanensis.

分类号：Q948

摘要：以云南西北部云南红豆杉(Taxus yunnanensis)群落为研究对象,利用在兰坪县、香格里拉县和宁蒗县的野外样地调查数据,分析了云南红豆杉群落物种组成、多样性、结构及云南红豆杉更新特征。结果表明:云南红豆杉群落主要物种包括玉山竹(Yushania niitakay-amensis)、云南铁杉(Tsuga dumosa)、云南红豆杉、红桦(Betula albo-sinensis)和云南箭竹(Fargesia yunnanensis)。香格里拉县具有较高的科、属、灌木物种丰富度,但乔木、藤本及总物种丰富度在3个地点之间无显著差异。兰坪县和香格里拉县均在较低径级和高度级中具有较高的物种丰富度和个体多度,而宁蒗县则在第Ⅱ径级和第Ⅱ高度级中具有最高的物种丰富度和个体多度。云南红豆杉野生种群实生苗更新困难,但云南红豆杉具有较强的萌生能力,萌生个体多度与实生个体多度比为1.314,萌生方式主要为干基萌生和干萌生;宁蒗县萌生个体最多,但3个地点萌生植株平均胸径和平均高无显著差异。
Taking the Taxus yunnanensis communities in northwest Yunnan Province as test ob jects and based on the field investigation data at three sites （Lanping, Xianggelila, and Ninglang counties） of northwest Yuunan, this paper analyzed the species composition, species diversity, stem size class, and regeneration features of the T. yunnanensis communities. The dominant spe cies in the T. yunnanensis communities were Yushania niitakayamensis, Tsuga dumosa, T. yun nanensis, Betula albosinensis, and Fargesia yunnanensis. Xianggelila had the higher species richness of family, genus, and shrubs than the other two counties, but no significant differences were observed in the species richness of trees and lianas and the total species richness among the three counties. Lanping and Xianggelila had the higher species richness and abundance at smal- ler size classes （DBH 〈 5 cm）, while Ninglang had the highest species richness and abundance at the second diameter class （1 cm ≤ DBH 〈 5 cm） and height class （5 cm ≤H〈10 m）. The wild T. yunnanensis population had weak regeneration ability through seedling, but had stronger sprouting ability. The ratio of the stems through sprouting to through seedling was 1,314. The major sprouting types at all of the three sites were stem basal sprouting and stem epicormic sprou- ting. Ninglang had the highest sprouting stems, but all the three sites had no significant differ ences in the mean diameter and height of sprouting stems.