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松嫩草原土壤动物的分布格局受多种因素的综合影响,地形通过影响其他环境因素进而能够影响土壤动物的分布格局。本研究分别在松嫩草原固定沙丘和草甸选取5个生境,进行为期一年的土壤动物群落调查,分析土壤动物生态分布特征和多样性特征,探讨地形和时间对土壤动物分布格局的影响。结果显示,研究期间获得土壤动物密度为5144.62 ind.m-2,所获土壤动物隶属于4门8纲24类;不同生境土壤动物多样性指数随时间变化规律存在一定的差异性,方差分析发现,时间和地形对土壤动物数量特征和多样性特征具有明显的作用,但是地形和时间对土壤动物群落的交互作用不是十分明显。因此,地形分异能够显著地影响松嫩草原土壤动物的分布格局,这可能主要与生境的生物和非生物特征有关。
The distribution pattern of soil fauna in the Songnen steppe is affected by the combination of various factors. Topography can influence the distribution of soil animals by affecting other environmental factors. In this study, five habitats were selected from the fixed sand dunes and meadows on the Songnen Plains, and the soil fauna community surveyed for one year was conducted. The ecological characteristics and diversity of soil fauna were analyzed, and the effects of topography and time on soil fauna distribution were discussed. The results showed that the density of soil animals obtained during the study was 5144.62 ind.m-2, and the soil animals were classified into 4 classes, 8 classes and 24 classes. The diversity index of soil animal in different habitats was different with time, and variance analysis found The time and topography have significant effects on the quantitative characteristics and diversity of soil animals, but the interaction between topography and time on soil animal communities is not obvious. Therefore, topographic differentiation can significantly affect the distribution patterns of soil fauna in Songnen steppe, which may be mainly related to the biological and non-biological characteristics of habitats.