稀土元素对土栖动物群落结构的影响及对蛴螬的生态毒性  

Effects of rare earth elements on soil fauna community structure and their ecotoxicity to Holotrichia parallela.

作　　者：李桂亭[1] 江俊起[1] 陈洁[1] 邹运鼎[1] 张新才[1] 

机构地区：[1]安徽农业大学,合肥230036

出　　处：《应用生态学报》2006年第1期159-162,共4页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金重大资助项目(29890280)

摘　　要：采用土施法和OECD推荐的滤纸接触法研究了稀土(ReCl3.6H2O)对豆田土栖动物群落结构的影响以及稀土对蛴螬的生态毒性.结果表明,对照与各处理之间动物种类数、主要动物种群数量、多样性指数差异均不显著;急性和慢性毒性试验表明,对照与各处理间的死亡率差异不显著.在稀土有效施用范围内,稀土对蛴螬的生态毒性很小,不会明显改变蛴螬种群结构.By the method of OECD filter paper contact, this paper studied the effects of applied rare earth elements on soil fauna community structure and their ecological toxicity to Holotrichia parallela in bean field. The results showed that there were no significant differences between the treatments and the control in soil fauna species, quantity of main species, and diversity index. Urgent and chronic toxic test showed that the differences between the treatments and the control were not significant. It was suggested that within the range of test dosages, rare earth elements had little ecological toxicity to Holotrichia parallela, and did not change the soil fauna community structure.

关 键 词：稀土元素 土栖动物 群落结构 蛴螬 生态毒性 

分 类 号：X174[环境科学与工程—环境科学]