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选择发生外来入侵植物黄顶菊(Flaveria bidentis)的林地、荒地和沟渠作为研究对象,探讨黄顶菊入侵对地表土壤动物群落的影响。调查采用陷阱法,于2012年4月26日—9月17日,每隔2周取样一次,3种生境共捕获地表土壤动物439515头,隶属3门7纲21目。蚁科在3种生境中均为优势类群,其余类群的相对多度较小。黄顶菊植株能够为蚁科、等足目、蟋蟀科和蜘蛛目等喜好阴凉湿润环境的地表土壤动物类群提供栖息地,从而对地表土壤动物群落结构及多样性产生影响;且该影响主要与黄顶菊自身的生长状况有关,在长势较弱的林地生境影响较小,而在长势较强的荒地和沟渠生境影响较大,这在黄顶菊生长盛期尤为明显。综上所述,黄顶菊入侵3种生境后可能通过影响微生境小气候从而改变地表土壤动物群落结构,并引起地表土壤动物多样性的升高。
The woodland, wasteland and ditch of alien invasive plant Flaveria bidentis were selected as the research object to discuss the influence of flaveria bidentis invasion on the soil animal community. The investigation adopted the trap method. Samples were taken every 2 weeks from April 26 to September 17, 2012. The total number of surface soil animals captured by the three habitats was 439,515, belonging to 3 classes, 7 classes and 21 orders. The families of ants are the dominant species in all three habitats, and the relative abundances of the remaining taxa are smaller. Flaveria bidentis plants could provide habitat for surface soil fauna, such as the families of Nymphalidae, Isopoda, Cricket and Spidey, which affected the soil fauna community structure and diversity of the soil surface, and this effect was mainly related to the interaction between Flaveria bidentis , But less affected in the habitat of weaker woodland, but more significant in the habitat of wasteland and ditch habitat, which is more obvious in the peak growth period of flaveria. In summary, the invasion of three habitats by flaveria bidentis may affect the microclimate microclimate, thereby changing the surface soil fauna community structure and causing the rise of surface soil animal diversity.