| 摘要: |
| 采用网格调查法，分析了长潭自然保护区次生针阔混交群落优势种群的结构特征，结果表明：（1）6600 m2的次生针阔混交群落共计6081 株活立木，隶属于135种乔木树种，其中以杉木、马尾松、木荷 、千年桐、山乌桕、毛竹、黄樟 、黧蒴、青皮竹、枫香 、罗浮柿、石栎等12种为优势树种。（2）径级结构分析发现，木荷、枫香、千年桐、黄樟、藜蒴、罗浮柿和石栎等径级分布呈“L”增长型种群，杉木和马尾松因受人为种植和采伐影响Ⅰ、Ⅱ、Ⅲ级数量丰富，Ⅳ级数量迅速减少，而毛竹和青皮竹则受人为挖取竹笋的影响，Ⅰ级数量较Ⅱ、Ⅲ级低。（3）除山乌桕Ⅳ级为随机分布，其他11种优势种均为群集分布，群集程度随径级增加，变化趋势不明显，反映了人为干扰成为影响长潭自然保护区次生针阔混交群落优势种群结构特征的重要影响因子。 |
| 关键词: 广东 长潭自然保护区 次生针阔混交群落 优势种群 结构特征 |
| DOI： |
| 分类号: |
| 基金项目:广东省林业局项目“广东省森林生态效益监测站建设与研究”。 |
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| Structure patterns of dominant populations in the secondary conifer and broadleaf mixed forest in Changtan Nature Reserve of Guangdong Province |
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guoyuedong
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| Abstract: |
| Structure patterns of dominant populations in the secondary conifer and broadleaf mixed forest in Changtan Nature Reserve were studied with grid method, the results showed that: (1)There were 6081 trees in the 6600 m2 fileds, which in a total of 135 speices, and the main speices included 12 species, such as Cunninghamia lanceolata, Pinus massoniana, Schima superba, Aleurites montana, Sapium discolor, Phyllostachys heterocycla, Cinnamomum porrectum, Castanopsis fissa,Bambusa textiles, Liquidambar formosana,Diospyros morrisiana, Lithocarpus glabra, etc. (2)The age structures of Schima superba, Liquidambar formosana, Aleurites montana, Cinnamomum porrectum, Castanopsis fissa, Diospyros morrisiana and Lithocarpus glabra were L increasing type, and Cunninghamia lanceolata, Pinus massonianaⅠ、Ⅱ、Ⅲ |
| Key words: Changtan nature reserve of Guangdong province Structure patterns dominant populations secondary conifer and broadleaf mixed forest |
