长白山海拔2000米以上的高山苔原带,是一特殊的高山冰缘环境。近几年来,国内许多学者对这一特殊环境进行了深入地考察研究。1979年,联合国教科文组织“人与生物圈”委员会委托中国科学院在长白山建立了森林生态系统研究定位站。从此,有许多外国学者前来考察,并对高山苔原冰缘环境产生了极大的兴趣。我们于1981年夏对高山苔原带冰缘环境与土壤动物进行了初步调查。目的在于了解冰缘环境的一般特征和土壤动物组成、分布及其与冰缘环境的关系,为进一步研究高山苔原带生态系统提供本底和基础性资料。
As the periglacial environment of the alpine tundra is dull and harsh,itdecides that there are not too many kinds,individual number and biomass ofsoil animals.Twenty kinds of soil animals as acquired by Tullgren and Baermann Gathering Method,and divided into five phylumes and nine classes:they are Plathelminthes,Nemathelminthes,Annelida,Mollusca,Arthropoda,Turbellaria,Nematcda,Olgicchaeta,Gastropcda,Symphyle and Insect.Mean density of big soil animals is 259.5/m2,and of medium soil animalsis 75507.6/m2.Dominant species are Euchyraeidaf,Nernatoda and Collembolacommon species are Acarina,Coleoptera and Terricolae.The kinds and individual number of soil animals are decreaeing with increasing of the altitude above sea level.The density A/C of Collembola and Acarinais less than one.The kinds of the big soil animals are the most(15)in the depression,the individual number of the big soil animals are the most (720)in the northern slope.Individual density increases with increase of content of the organic substances.When moisture content in the soll is less than 50%,species and number of soil animals decrease markedly.
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