城市草坪不同管理方式下土壤动物群落结构特征与差异

摘要

为了解城市草坪不同管理方式下土壤动物的群落结构,于2015年7月,大型动物采用手捡法,中小型土壤动物采用干、湿漏斗法进行分离,对未除草、人工除草和人为践踏3种管理方式下草坪土壤动物的群落结构进行调查.试验共捕获土壤动物1009只,隶属于2门11纲20科;3种草坪管理方式下土壤动物平均密度排序为未除草(3.84×104只·m-2)>人工除草(3.63×104只·m-2)>人为践踏(2.79×104只·m-2),土壤动物类群数为未除草(33)>人工除草(27)>人为践踏(20).未除草与人工除草管理方式的土壤动物密度-类群指数(DG)有显著性差异(P0.05),大型土壤动物类群数差异性显著(Pweeding (3. 63 × 104 ind.· m- 2) >trampling (2. 79 ×104 ind.·m- 2). The order of species number was no weeding (33) >weeding (27) >trampling (20). There were significant differences between no weeding and weeding on the density-group index (DG) (P0. 05), while the specie numbers of soil macro-fauna were significantly different (P<0. 05). Results indicated that the richness, diversity and homogeneity of soil fauna were closely negatively correlated with intensity of human interference.