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松材线虫入侵后黑松林分结构特征的变化

DOI: 10.3969/j.issn.1000-2006.2013.05.016, PP. 81-86

Keywords: 黑松林,松材线虫病,林分结构,舟山岛

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Abstract:

自1992年发现松材线虫入侵浙江舟山岛以来,现已有大量黑松死亡。为了把握松材线虫入侵后黑松林的林分结构特征,笔者对舟山长岗山的黑松林进行了大样地(100m×100m)群落调查。结果表明:20世纪50年代营造的黑松纯林已经演变成针阔混交林,乔木层树种更加丰富,多样性有所增加。但是,落叶阔叶乔木数量众多,在林冠层占据较大优势,常绿阔叶乔木数量较少,并且主要分布在乔木层的中下层。林分的混交程度较差,缺乏绝对优势的种群,林木整体表现为聚集分布,说明林分尚处于演替的前期。林分要演替成常绿阔叶林需要较长期的过程,为了加速林分演替,在较短时间内恢复当地的森林生态系统,建议适当补植一些海岛地带性植被的乡土树种。

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