延安林区啮齿动物群落的聚类分析  

Clustering analysis of rodent communities in Yan'an forest region

作　　者：梁健[1] 孙婷[1] 

机构地区：[1]陕西师范大学生命科学学院,陕西西安710062

出　　处：《浙江林学院学报》2004年第1期70-74,共5页Journal of Zhejiang Forestry College

基　　金：陕西省自然科学基金资助项目(2001SM18);陕西师范大学校级重点资助项目

摘　　要：运用组平均聚类法,以啮齿动物密度和生物量综合决定的重要值为数据,对延安林区啮齿类群落进行聚类分析。根据聚类结果,延安林区啮齿动物可划分为3个群落,人工林区达乌尔鼠兔Ochotonadaurica+中华鼢鼠Myospalaxfontanieri群落(群落A);自然次生林区大仓鼠Cricetulustriton+中华鼢鼠+大林姬鼠Apodemuspeninsulae群落(群落B);林缘农田区中华鼢鼠+小家鼠Musmusculus+长尾仓鼠Cricetuluslongicaudatus群落(群落C)。结果较全面反映了群落的组成以及群落生境,群落多样性指数以群落A最高(1 8665),群落B次之(1 6516),群落C最低(1 2095)。多样性分析表明,啮齿动物群落多样性和环境的复杂性与稳定性密切相关。.Based on the importance value of rodents, the rodent communities in Yan'an forest region are classified by group average clustering analysis. The rodents can be divided into 3 communities: Ochotona daurica +Myospalax fontanieri cansus community (Community A) in planted forest region; Cricetulus triton+Myospalax fontanieri cansus+ Apodemus peninsulae community (Community B) in natural secondary forest region; Myospalax fontanieri cansus+Mus musculus+ Cricetulus longicaudatus community (Community C) in cropland region near forest. The results represent the composition and niches of the communities. Species diversity indexes of different commununities are different: the highest index is in community A (1.866 5), the next in community B (1.651 6) and the lowest in community C (1.209 5). The result of diversity analysis indicates that the diversity of rodent communities has a close relationship with the complexity and stability of their surroundings. The results can be used as a reference for the protection of the plants, the prevention and control of the harmful rodents in Yan'an forest region.

关 键 词：啮齿动物 聚类分析 重要值 多样性 延安林区 

分 类 号：Q958[生物学—动物学] S764[农业科学—森林保护学]