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生态学杂志 ›› 2021, Vol. 40 ›› Issue (5): 1458-1468.doi: 10.13292/j.1000-4890.202105.010

• 研究报告 • 上一篇    下一篇

南亚热带6种人工林小型土壤节肢动物群落多样性

李小涵1,刘世荣2,魏雪1,吴鹏飞1*   

  1. 1西南民族大学青藏高原研究院, 成都 610041;2中国林业科学研究院森林生态环境与保护研究所, 北京 100091)
  • 出版日期:2021-05-10 发布日期:2021-05-13

Soil microarthropod diversity in six subtropical forest plantations.

LI Xiao-han1, LIU Shi-rong2, WEI Xue1, WU Peng-fei1*   

  1. (1Institute of QinghaiTibetan Plateau, Southwest Minzu University, Chengdu 610041, China; 2Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China)
  • Online:2021-05-10 Published:2021-05-13

摘要: 为了解南亚热带不同人工林下小型土壤节肢动物群落组成结构及多样性,于2018年7月对广西凭祥的杉木林(Cunnighamia lanceolata)、马尾松林(Pinus massoniana)、米老排林(Mytilaria laosensis)、红椎林(Castanopsis hicklii)、火力楠林(Michelia macclurei)和西南桦林(Betuia alnoides)等6种人工林的小型土壤节肢动物群落及环境进行了调查。共分离小型土壤节肢动物575只,隶属于3纲10目58科79类(属);在目的层次上,甲螨亚目(Oribatida)、前气门亚目(Prostigmata)和膜翅目(Hymenoptera)为优势类群;不同人工林的小型土壤节肢动物群落组成结构存在差异。马尾松林的Pielou均匀度指数高于米老排和杉木林(P<0.05)。此外,米老排林的前气门亚目(P<0.05)数量高于其他人工林。多元回归分析表明,冠层的散射辐射透过系数、平均叶倾角、土壤全磷含量和pH是影响中小型土壤节肢动物的重要因子。小型土壤节肢动物的群落密度和多样性以红椎林相对较高,以杉木林相对较低;红椎林和米老排林能够提高前气门亚目、甲螨亚目和膜翅目的数量,因此建议选用红椎和米老排来改造现有杉木林,以调节小型土壤节肢动物群落组成结构和多样性。

关键词: 土壤动物, 多样性, 人工林, 南亚热带

Abstract: We analyzed the differences in taxonomic composition and diversity of soil microarthropod communities among six tree plantations (two coniferous plantations ofCunnighamia lanceolata and Pinus massoniana, and four broad-leaved plantations of Mytilaria laosensis, Castanopsis hicklii, Michelia macclurei andBetuia alnoides) in Pingxiang City, Guangxi Zhuang Autonomous Region, China. A total of 575 soil microarthropod individuals were extracted and identified into three classes, 10 orders, 58 families and 79 genera. The compositional structure of soil microarthropod communities differed among the six plantations, with Oribatida, Prostigmata and Hymenoptera being the dominant orders. The Pielou evenness index of soil microarthropod in the P. massonianaplantation was relatively higher than that in the M. laosensis and C. lanceolata plantations (P<0.05). The abundance of Prostigmata (P<0.05) in theM. laosensisplantation was significantly higher than that in other plantations. The transmission coefficient for diffuse penetration, mean leaf angle, total phosphorus, and soil pH were the main environmental factors driving soil microarthropod communities. The abundance and diversity of soil microarthropods were relatively higher in the C. hickliiplantation and lower in the C. lanceolata plantation, and abundance of Oribatida, Prostigmata and Hymenoptera were also higher in the C. hickliiand M. laosensis plantations. Our results indicated that M. laosensisor C. hickliican be planted to transform theC. lanceolataplantation forests, with the aim to regulate the compositional structure and diversity of soil microarthropod communities.

Key words: soil fauna, diversity, plantation forest, south subtropics.