黑龙江省西部沙地土壤动物生态分布研究

对黑龙江省西部地区沙地进行了土壤动物调查，选取了7个有代表性的样地，共获得土壤动物41类，3156只．隶属于4门6纲ll目．其中以昆虫种类数最多为33类，湿生动物在数量上所占的比重最大，约占土壤动物总数的95％．土壤动物种类和数量最多的分别是草甸和苇塘，沙土农田土壤动物种类和数量均很少．土壤动物无论是种类还是数量表聚现象均非常明显．

THE RESEARCH OF ECOSYSTEM DISTRIBUTION OF SOIL ANIMALS IN THE WEST SANDLAND REGION OF HEILONGJIANG PROVINCE

By investigating into the soil animal in the west sandland region of Heilongjiang Province, we have abtained 3136 soil animals which could be devided into 41 kinds, belonging to 4phylums, 6classes and 11 orders in seven representative habitats. Among them, the species number of insect class is the most, which is 33 types. The individual number of damp groups of soil animal is the largest, which is almost occupied 95% of the total soil animals. The biggest groups and individual numbers of soil animals were distributed in grassland and reed pond. Sandy farmland was very little in the groups and individual numbers. The surface gathering phenomenon of soil amimals is very obvious, not only in the groups but also in the individual numbers.