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应用生态学报 ›› 2012, Vol. 23 ›› Issue (09): 2459-2466.

• 研究报告 • 上一篇    下一篇

秦岭西部山地次生林和人工林大型土壤动物群落结构特征

刘继亮1,曹靖2**,李世杰2,潘春林3,潘成臣1   

  1. (1中国科学院寒区旱区环境与工程研究所生态与农业研究室, 兰州 730000; 2兰州大学生命科学学院, 兰州 730000; 3小陇山林业科学研究所, 甘肃天水 741022)
  • 出版日期:2012-09-18 发布日期:2012-09-18

Characteristics of soil macrofaunal community structure in secondary forest and forest plantations in western Qinling Mountains of Northwest China.

LIU Ji-liang1, CAO Jing2, LI Shi-jie2, PAN Chun-lin3, PAN Cheng-chen1   

  1. (1Laboratory of Ecology and Agriculture, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; 2 School of Life Sciences, Lanzhou University, Lanzhou 730000, China; 3Xiaolongshan Research Institute of Forestry, Tianshui 741022, Gansu, China)
  • Online:2012-09-18 Published:2012-09-18

摘要: 人类对次生林生态系统的长期扰动必然会对地下生态过程产生深刻影响,而土壤动物群落结构和功能多样性对地下生态过程的演变有重要的指示意义.本文以小陇山林区恢复近30年的次生林和栽植近30年的油松、日本落叶松、欧洲云杉和粗枝云杉林为对象,通过对5种林型土壤动物群落密度调查,采用PCA排序和方差分析等方法,探讨了不同林型土壤动物群落结构特征和营养结构.结果表明: 油松林和日本落叶松林土壤动物群落密度是次生林的3.0和2.1倍;油松和日本落叶松人工林土壤动物群落中消费者/分解者比值明显高于次生林,油松林和日本落叶松林消费者/分解者的比值显著高于欧洲云杉林和粗枝云杉林;不同人工林土壤动物群落结构存在明显差异,油松林和日本落叶松林土壤动物群落密度是粗枝云杉林的4.5和3.1倍,而油松林土壤动物群落类群丰富度是欧洲云杉林和粗枝云杉林的1.5倍.

Abstract: Long-term disturbance of human beings on secondary forest ecosystem would have profound impacts on belowground ecological processes, whereas the community structure and functional diversity of soil fauna would be sensitive to the changes of belowground ecological processes, with significance as an indicator of the changes. In this study, the method of handsorting was adopted to investigate the density of soil macrofaunal community in a secondary forest and the Pinus tabulaeformis, Larix kaempferi, Picea abie, and Picea asperata plantations of nearly 30 years old in Xiaolongshan forest area of western Qinling Mountains, and the PCA ordination and oneway ANOVA analysis were applied to analyze the community structure and trophic group composition of soil macrofauna in the five forest types. In the P. tabulaeformis and L. kaempferi plantations, the density of soil macrofaunal community was 3.0 and 2.1 times of that in the secondary forest, respectively, and the consumers/decomposers ratio of the community was obviously higher than that in the secondary forest. Among the plantations, P. tabulaeformis and L. kaempferi plantations had a significantly higher consumers/decomposers ratio of soil macrofaunal community than P. abies and P. asperata plantations. There was an obvious difference in community structure of soil macrofauna among the four plantations. The density of soil macrofaunal community in P. tabulaeformis and L. kaempferi plantations was 3.5 and 2.1 times higher than that in P. asperata plantation, respectively, whereas the group richness of soil macrofaunal community in P. tabulaeformis plantation was 1.5 times of that in P. abies and P. asperata plantations.