用土壤微生物方法评价重金属Cu的毒性及其时间效应

被引：14

作者：

杨元根

Paterson E

Campbell C

机构：

[1] 中国科学院地球化学研究所,TheMacaulayLandUseResearchInstitute,AberdeenABQH,UK,TheMacaulayLandUseResearchInstitute,AberdeenABQH,UK贵阳

来源：

自然科学进展 | 2001年 / 03期

关键词：

土壤Cu污染; 微生物特征; 时间效应;

D O I：

暂无

中图分类号：

X171.5 [污染生态学];

学科分类号：

摘要：

从微生物特征及其群落结构等方面研究了重金属Cu的土壤毒性及其时间效应。结果表明,Cu进入土壤早期阶段,低浓度对土壤微生物生物量有刺激作用,高浓度起抑制作用;微生物呼吸强度迅速增加,微生物生理生态参数qCO2升高,Cmic/Corg降低;土壤溶液中Cu浓度很低,对发光菌E.Coli有轻度抑制作用,但随时间延长而更不显著;Biolog结果显示,在Cu胁迫下,微生物的群落结构有所改变,对碳源的消耗量增加,速度变快,这种损伤具有长期效应。

引用

页码：21 / 27

页数：7

共 12 条

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