四川盆周西缘山地典型人工林下凋落物层跳虫群落结构特征

发布时间：2018-07-05 00:25

本文选题：土壤动物学 + 人工林　；参考：《浙江农林大学学报》2017年01期

【摘要】：为了解典型人工林下凋落物层跳虫群落结构特征,于2013年5月、7月、9月和11月中旬对四川盆周西缘山地的楠木Phoebe zhennan人工林、水杉Metasequoia glyptosyroboides人工林、柳杉Cryptomeria fortunei人工林和次生林4种林型下凋落物层跳虫群落结构进行调查。结果表明:试验共捕获跳虫1 496头,隶属于11科。各林型凋落物层跳虫个体密度与类群数具有相似的变化趋势,其中,跳虫个体数和类群数均以柳杉林最高,分别为768头和11科,以次生林最低,分别为86头和6科。各林型均以长角蚍兆科Entomobryidae,等节蚍兆科Isotomidae和圆蚍兆科Sminthuridae为优势类群,其个体数所占比例均在82%以上。研究显示,各林型凋落物层跳虫密度和类群数并不与凋落物蓄积量一致,说明凋落物蓄积量对跳虫密度及类群数没有决定性的影响;相似性分析显示,除柳杉和楠木相似性系数在7月达最高外,不同林分间相似性系数最高值均出现在9月,最小值分别出现在5月和7月。
[Abstract]:In order to understand the community structure characteristics of litter layer jumper in typical plantations, the Phoebe zhennan plantation and Metasequoia glyptosyroboides plantation were studied in May, July, September and November, 2013. The community structure of litterfall layer of Cryptomeria fortunei plantation and secondary forest were investigated. The results showed that a total of 1 496 individuals belonging to 11 families were captured in the experiment. There was a similar trend between individual density and group number in the litter layer of forest type, among which, the individual number and group number were the highest, 768 and 11 families, respectively, and the lowest in secondary forest, 86 and 6 families, respectively. The dominant groups of forest types were Entomobryidaeae, Isotomidae and Sminthuridae. The percentage of individuals was over 82%. The results showed that the density and the number of litter species were not consistent with the litter volume, which indicated that the litter volume had no decisive effect on the density and the number of species, and the similarity analysis showed that there was no significant difference between the density and the number of species. Except for the highest similarity coefficient of Cryptomeria fortunei and Phyllostachys annua in July, the highest value of similarity coefficient among different stands appeared in September, and the minimum value appeared in May and July, respectively.
【作者单位】：四川农业大学旅游学院;四川农业大学生态林业研究所;黄龙国家级风景名胜区管理局;四川农业大学林学院;
【基金】：国家自然科学基金青年科学基金资助项目(31400457) 四川省教育厅资助项目(13ZA0258) 四川省景观与游憩研究中心资助项目(JGYQ2015012)
【分类号】：S714.3

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