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摘要: 通过对浙江省桐庐县3种森林类型共9个森林样地的调查，分析了植物多样性、种群分布格局等群落结构特征。结果表明：①在树种组成上，常绿阔叶林主要以中幼龄林木为主，针叶林以高大成熟乔木为主，针阔混交林介于两者之间；②针阔混交林、常绿阔叶林、针叶林3种类型中重要值最大的树种是檵木Loropetalum chinensis，苦槠Castanopsis sclerophylla和马尾松Pinus massoniana，重要值分别为31.27%，47.00%和96.92%；③乔木层物种丰富度最大的是常绿阔叶林，灌木层和草本层中丰富度最大的是针叶林；3种多样性指数趋势基本相同，其中灌木层的多样性最大；而常绿阔叶林和针阔混交林乔木层的Shannon-Wierner指数远大于针叶林，Pielou均匀度指数和Simpson生态优势度针叶林草本层最大；④针阔混交林和常绿阔叶林的大部分树种为随机分布，针叶林中主要树种马尾松为集群分布。图2表3参17Abstract: To determine the difference of the growth conditions between evergreen broad-leaved forest，coniferous forest and mixed wood，nine sample sites（which is 20 m 20 m plot） were selected for three different forest communities in Tonglu County，Zhejiang Province to compare community diversity，species composition，and population distribution patterns. Through specific data analysis，results showed that（1） for plant spatial distribution，young plants mainly dominated the evergreen broadleaf forest，old-tall trees dominated the coniferous forest，and a mixture of both young and old-tall trees were found in the mixed forest. （2） The largest importance values for species among the mixed，the evergreen broadleaf，and the coniferous forests were：Loropetalum chinensis（31.27%），Castanopsis sclerophylla（47.00%），and Pinus massoniana（96.92%）. （3） Species richness for the evergreen broadleaf forest was greatest in the tree layer；whereas in the coniferous forest species richness in the shrub and herb layers was largest. Also，（4） most of the species in the mixed and broadleaf forests were randomly distributed with Pinus massoniana in the coniferous forest found mainly in clusters.［Ch，2 fig. 3 tab. 17 ref.］
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Key words:
- forest ecology /
- plant diversity /
- distribution pattern /
- population structure /
- Tonglu
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2011.03.010
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