四川盆周西缘山地典型人工林地表节肢动物群落特征

Characteristics of Surface Arthropod Community under Typical Artificial Forest in the Western Margin of Sichuan Basin

为了解四川盆周西缘山地典型人工林地表节肢动物群落特征,于2016年5—6月份以水杉林(Metasequoia glyptostroboides)、柳杉林(Cryptomeria fortunei)和楠木林(Phoebe zhennan)为调查对象,采用陷阱法对地表节肢动物群落特征进行研究分析。结果表明:试验共捕获地表节肢动物5375只,隶属3门9纲24目,其中弹尾目和双翅目为优势群种。3种人工林地表节肢动物丰富度和多样性指数以柳杉林显著高于其他两种人工林(P<0.05);楠木林中的均匀度与优势度显著高于其他两种人工林(P<0.05)。人工林地表节肢动物的个体数、类群数、多样性指数、动物类型、丰富度和优势度均呈不显著差异(P>0.05),各人工林地表节肢动物的均匀度与优势度之间呈显著性差异(P<0.05)。表明林分类型对地表节肢动物多样性产生了一定影响。

To understand the characteristics of surface arthropod community under the typical artificial forest in the western margin of Sichuan Basin. From May to June 2016, Metasequoia glyptostroboides, Cryptomeria fortunei and Phoebe zhennan plantations were used as survey objects, and the characteristics of surface arthropod community were studied by trap method.The results showed that 5 375 surface arthropods were captured in the experiment, belonging to 3 orders, 9 classes and 24 orders, of which the order of the Collembola and Diptera were dominant species. The richness and diversity index of surface arthropods in the three artificial forests were the highest in C. fortunei, which was significantly higher than the other two plantations(P<0.05). The uniformity and dominance in the P. zhennan were significantly higher than the other two plantations. There were no significant differences in the number of individuals, group numbers, diversity index, animal type, richness and dominance of arthropods under artificial forests(P>0.05), and there was a significant difference between the uniformity and dominance of arthropods in each forest type(P<0.05). The type of stand has a significant impact on the diversity of surface arthropods.