乌鲁木齐北郊不同土地利用方式下大中型土壤动物群落分布特征

    Distribution of Soil Macro-and Meso-Animal Communities in the North Suburbs of Urumqi

    • 摘要: 2007年5月至7月在乌鲁木齐北郊选择4种不同土地利用类型的土壤,采集0—5、5—10、10—15 cm 3个深度土层的大中型土壤动物研究乌鲁木齐北郊大中型土壤动物群落分布特征,共获得大中型土壤动物1 543个,隶属于3门9纲18目,其中昆虫纲、腹足纲、弹尾纲和蛛形纲为优势类群,占全捕量的80.04%;软甲纲和双尾纲为常见类,占土壤动物总数的6.28%;倍足纲属罕见类,仅占土壤动物总数的1.04%。4种不同土地利用类型土壤中大中型土壤动物群落物种多样性和均匀度指数有一定差异,自然林物种多样性最大,农田最小,这与自然林土壤有机质等营养元素含量高、农田施用化学农药和化肥有关。大中型土壤动物在土壤中具有垂直分布特征,显示土壤动物具有明显的表聚现象。

       

      Abstract: In order to study distribution of soil macroand meso-animal communities in the north suburbs of Urumqi,four sampling sites different in land use were selected and soil animals were collected in three different soil levels: 0-5,5-10 and 10-15 cm from May to July,2007.A total of 1 543 individuals of macro-and meso-animals were gathered,belonging to 18 order,9 classes and 3 phyla.Among them,Insecta,Gastropoda,Collembola and Arachnida were the dominant classes,which account for 80.04% of the all captured animals.Malacostraca and Diplura were the common species,accounting for 6.28%,whereas Diplopoda was the rare one,accounting for only 1.04%.Differences existed between the four sampling sites in species diversity and evenness indexes of the soil macro-and meso-animal communities.Natural woodlot was the highest in species diversity,while farmland the lowest,which was assumed to be related to difference in soil fertility(organic matter and nutrient contents),and application of agro-chemicals.The characteristics of vertical distribution of the soil animals showed an obvious feature of surface assembly in soil.

       

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