不同微生境下季风常绿阔叶林附生维管植物多样性特征
投稿时间:2021-07-22  修订日期:2021-08-19  点此下载全文
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李敏 中国林业科学研究院资源昆虫研究所 650224
王艳红 中国林业科学研究院资源昆虫研究所 650224
唐荣 中国林业科学研究院资源昆虫研究所 650224
陈昭铨 中国林业科学研究院资源昆虫研究所 650224
刘万德 中国林业科学研究院资源昆虫研究所 650224
基金项目:云南省基础研究专项项目
中文摘要:附生植物是森林生态系统中的重要结构性成分,对于维持森林生态系统物种多样性及生态系统功能均具有重要意义。本文通过对不同微生境下季风常绿阔叶林附生维管植物的调查,分析了附生维管植物多样性及其与微生境的关系。结果表明:季风常绿阔叶林中共记录附生维管植物97种12302株,分属16科45属。物种-多度曲线显示,隐柄尖嘴蕨(Belvisia henryi)、线叶书带蕨(Vittaria linearifolia)、半圆盖阴石蕨(Humata platylepis)等3个物种优势明显。山脊生境中附生维管植物具有更高的物种多样性和个体多度,而缓坡、沟谷生境中附生维管植物个体多度均较低。在不同径级以及不同高度之间附生维管植物丰富度均具有显著差异(P<0.05),物种主要分布在中小径级宿主及林木树干中下部位。影响附生维管植物物种丰富度、个体多度的主要环境变量为海拔高度、光照强度、温度,附生维管植物物种丰富度与海拔高度、光照强度的关系可以用回归方程y=0.05x1-0.007x2-59.842(R2=0.391, P=0.000)表示,多度与海拔高度、光照强度的关系可以用回归方程y=0.793x1-0.057x2-1056.27(R2=0.204, P=0.000)进行描述。
中文关键词:附生植物,物种多样性,相关性分析,微生境,季风常绿阔叶林
 
Epiphytes vascular plants diversity of different microhabitats in monsoon broad-leaved evergreen forest
Abstract:Epiphyte is an important structural component of the forest ecosystems and is of great significance for maintaining forest ecosystem species diversity and ecosystem functions. In this paper, the diversity of epiphytic vascular plants and their relationship with the microhabitats are analyzed by investigating the epiphytic vascular plants in monsoon evergreen broad-leaved forests in different microhabitats. The results showed that a total of 12,302 epiphytic vascular plants of 97 species were recorded in the monsoon evergreen broad-leaved forest, belonging to 16 families and 45 genera. The species-abundance curve shows that Belvisia henryi, Vittaria linearifolia, and Humata platylepis have obvious advantages. Epiphytic vascular plants in mountain ridge habitats have higher species diversity and individual abundance, while those in gentle slope and valley habitats have lower individual abundance of epiphytic vascular plants. There are significant differences in the abundance of epiphytic vascular plants between different diameter classes and different heights (P<0.05). The species are mainly distributed in the middle and small diameter hosts and the middle and lower parts of the tree trunks. The main environmental variables that affect the species richness and individual abundance of epiphytic vascular plants are altitude, light intensity, and temperature. The relationship between epiphytic vascular plant species richness and altitude and light intensity can be determined by the regression equation y=0.05x1 -0.007x2-59.842 (R2=0.391, P=0.000) means that the relationship between abundance, altitude and light intensity can be described by the regression equation y=0.793x1-0.057x2-1056.27 (R2=0.204, P=0.000).
keywords:epiphyte, species  diversity, correlation  analysis, microhabitat, monsoon  evergreen broad-leaved  forest
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