铝对木荷林凋落物层大中型土壤动物的影响

2012年11月至2013年10月在人工木荷林设置样地,通过8次取样,研究铝浓度增加对木荷林凋落物层大中型土壤动物的影响.结果表明:铝溶液梯度对土壤动物数量和类群数的影响不显著;优势类群甲螨亚目和弹尾纲对铝溶液处理不敏感,而铝溶液对一些常见类群的影响较为显著,中气门亚目和鞘翅目数量随着铝溶液浓度的增加而减少,可作为铝溶液影响大中型土壤动物的指示类群.取样期对土壤动物数量和类群数的影响极显著;在土壤动物数量较少的季节铝溶液对土壤动物群落的影响更加明显;铝溶液处理降低了土壤动物群落的多样性水平,不利于植物良好微生态环境的建立.

Effects of Aluminum on large and medium-sized soil animals in litter layer of Schima superb forest

In order to explore the effects of Aluminum on large and medium-sized soil animals in litter layer, a simulation experiment was conducted and sample areas were set up from November 2012 to October 2013 in artificial forest of Schima superb. Through spraying different concentrations of Aluminum and after eight times sampling, the result showed that, the effects of Aluminum on the number of soil animals and number of soil animal groups were not significant.Dominant groups like Oribatida and Collembola were not sensitive to Aluminum treatment, while some common groups were affected significantly, the number of Mesostigmata and Coleoptera decreased with the increase of Aluminum concentration,so they could be the indicating groups. Sampling period had significant effect on the number of soil animals and groups.Aluminum had more obvious effect on soil animal community in the season with less animals. The treatment of Aluminum solution reduced the level of diversity of soil animal community, and was not good to the establishment of micro ecological environment of plant.