7ZHU WX (朱文祥).The discovery andapplication of rare earth elements (稀土元素的发现和应用)[M]. Guilin: GuangxiEducation Press (广西教育出版社),1993:2.
8SPURGEON DJ, WEEKS JM, VAN G,et al. A summary of eleven yearsprogress in earthworm ecotoxicology:The 7th international symposium onearthworm ecology Cardiff Wales 2002[J]. Pedobiologia-lnternational Journalof Soil Biology, 2003, 47 (5/6): 588-606.
9STuRZENBAUM SR,KILLE P, MOR-GAN AJ. Identification of heavy metalinduced changes in the expression pat-terns of the translationally controlledturn ourprotein(TCTP) in the earthwormLum bricusrubellus [J]. B lochim icaetBiophysicaActa (BBA) -Gene Structureand Expression, 1998,1398 (3): 294-304.
10NAHMANI J, LAVELLE P. Effects ofheavy metal pollution on soil macro fau-na in grassland of Northern France [J].European Journal of Soil Biology, 2002,38(3/4): 297-300.