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湘中丘陵区石栎群落研究
李志辉; 朱日光;
1.中南林学院!湖南株洲412006;2.资兴市林业局!湖南资兴423400
摘要:
以湘中丘陵区石栎 (L ithocarp us glaber)群落为调查研究对象 ,分析了群落的特征 ,定量计测了乔木层主要树种的生态位宽度和重叠值。结果表明 ,石栎群落垂直结构较为复杂 ,可分为乔木层、灌木层、草本层 ,亦有少量的层间植物。群落的优势种较明显 ,乔木层的物种多样性指数较高。主要树种生态位宽度值大小顺序为 :石栎、苦槠、木荷、白栎、拟赤杨、南酸枣和柏木。在生态位重叠值中 ,以优势种石栎与白栎、柏木、枫香、樟树、拟赤杨、木荷、南酸枣、苦槠、秃瓣杜英重叠值较大 ,枫香与苦槠的重叠值最小 ,石栎与马尾松、君迁子属中等重叠
关键词:  石栎  群落特征  物种多样性  生态位宽度  生态位重叠  
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