吉林省中西部平原不同农林用地土壤昆虫幼虫的群落特征

对吉林省中西部平原典型农林用地进行土壤昆虫幼虫调查。结果表明,中部平原土壤昆虫幼虫类群数和个体数量显著高于西部平原,中部平原与西部平原土壤昆虫幼虫个体数量差别主要表现在步甲科、拟球甲科和大蚊科3个类群,农田和居民点园地土壤昆虫幼虫类群数量和个体数量明显低于防护林,耕作活动使土壤昆虫幼虫个体数量土壤剖面分布更均匀,鞘翅目幼虫、双翅目幼虫和鳞翅目幼虫对农林用地方式变化的反应存在差异。

Community characteristics of soil insect larvae in agricultural and forest lands in mid-west plain of Jilin Province

The investigation on the soil insect larvae in agricultural and forest lands in mid-west plain of Jilin Province showed that the species number and individuals quantity of soil insect larvae were significantly higher in mid plain than in west plain, and the difference in individuals quantity mainly manifested in the communities of Carabidae, Tipulidae, and Corylophidae. The species number and individuals quantity of soil insect larvae in farmland and residential area were obviously higher than those in protection forest land. Cultivation made soil insect larvae distribute more evenly in soil profile, and differences were observed in the responses of Coleoptera, Diptera and Lepidoptera larvae to different land use patterns.