The Effects of Cadmium on Soil Free Living Nematodes
The effect of heavy metal Cadmium on soil free living nematode was studied within the microcosm. The results show that: With the increase of concentration, the proportion of bacterial-feeding nematodes was keeping increasing, while the proportion of fungal-feeding nematodes decreased. Concerning to Maturity Index 2-5 (MI2-5), there was no significant difference between 2.5mg·kg-1Cd treatment and control, but in the sampling day of 9,30 and 60, the treatments of 2.5mg·kg-1, 50mg·kg-1 were lower than control. Depending on the results, Enrichment Index (EI) was affected by each level of Cd concentration. The same trend with MI2-5, Stucture Index (SI) did not change in the 2.5mg·kg-1 treatment, but in the other two treatments the indices were lower. The organic matter was mainly decomposed through bacterial pathway. The applying of Cd could shift the decomposing pathway with more bacteria involved.
Cadmium nematode population indez effect
Jing Zhao Yuhui Qiao
College of Resources and Environment China Agricultural University Beijing, China
国际会议
上海
英文
4488-4491
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）