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  

Collembola community characteristics for litter layers in typical plantations of mountainous western Sichuan

作　　者：肖玖金[1,2] 尤花 罗熳丽[1] 赵波[4] 卢昌泰[1] 魏洪[1] 谢吉庆[1] 

机构地区：[1]四川农业大学旅游学院,四川都江堰611830 [2]四川农业大学生态林业研究所,四川温江611130 [3]黄龙国家级风景名胜区管理局,四川阿坝623300 [4]四川农业大学林学院,四川温江611130

出　　处：《浙江农林大学学报》2017年第1期56-62,共7页Journal of Zhejiang A&F University

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)

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。To determine the characteristics of the Collembola community in the litter layer of typical artificial plantations, Cryptomeria fortunei, Phoebe zhennan, Metasequoia glyptostroboides, and a secondary-forest were selected and studied in May, July, September, and November of 2013. Analysis included a similarity index. Results comprised a total collection of 1 496 samples of soil fauna belonging to 11 families. Of these, 290 be-longing to 9 families were found in M . glyptostroboides stands, 352 belonging to 7 families were collected in Phoebe zhennan plots, 768 belonging to 11 families were collected in C . fortunei stands, and 86 belonging to 6 families were collected in the secondary-forest. The highest number of Collembola for each month was found in C . fortunei, and the lowest number （except for May） was found in the secondary-forest. In each forest type, Isotomidae, Sminthuridae, and Entomobryidae were the dominant families. No direct relation between the indi-vidual number and families of Collembola and litter accumulation were found. Also, the similarity index studies showed that the highest value was found in September （excepting July） , and the smallest values were found in May and July. [Ch, 3 fig. 5 tab. 20 ref.]

关 键 词：土壤动物学 人工林 凋落物层 跳虫 群落结构 

分 类 号：S718.6[农业科学—林学]