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Dynamics of soil fauna in Da Hinggan Mountains, Northeast China 总被引:1,自引:0,他引:1
The dynamics of soil animals was studied in seven representative forest communities in the north of the Da Hinggan Mountains, Northeast China. The results indicate that it was distinctive in the changes of the numbers of soil animals and groups and diversity in relationship with seasons for macrofauna and torso-micro fauna in the study area. The numbers of the observed soil animals in different months were: October>August>June. Group number was larger in August and October, but smaller in June. The change of diversity index in different months was: August>June>October. The biomass for macrofanna in different months was: October>June>August. The composition and number of each functional group was relatively stable. In the community of the predominant soil environment, the percentage of saprophagous animals was higher than carnivorous animals and herbivorous animals. The dynamics changes of saprophagous and carnivorous animals were distinctive, increasing from June to October, while the change of herbivorous animals was unremarkable. 相似文献
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很难想象大象的亲戚会生活在海中,海牛目在海洋哺乳动物中是相当特殊的一群,所属物种均为植食性,以海草与其他水生植物为食。现存共有四种海牛目动物,分为两个科:海牛科的3种海牛,与儒艮科的儒艮。儒艮科的另一物种大海牛曾存活至近代,但已在18世纪时被猎捕至灭绝。 相似文献
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