Microbial populations and enzyme activity in soil treated with heavy metals

被引：57

作者：

Hemida, SK

Omar, SA

AbdelMallek, AY

机构：

[1] University of Assiut,Department of Botany, Faculty of Science

来源：

WATER AIR AND SOIL POLLUTION | 1997年 / 95卷 / 1-4期

关键词：

Cu2+; Zn2+; clay; sandy soils; fungi; bacteria actinomycetes; soil enzymes;

D O I：

10.1023/A:1019220722497

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Effects of two concentrations (200 and 2000 mu g g(-1) soil) of two heavy metals (copper and zinc as sulphates) applied to clay or sandy soil for 12 weeks on the total counts of fungi, bateria and actinomycetes were studied. Activities of three soil enzymes (urease, nitrate reductase and amidase) were also investigated. Application of heavy metals to the clay soil reduced the microbial populations. However, although neither heavy metal showed any significant increasing effect on microorganisms populations in clay soil samples, some stimulatory effects were noted in sandy soil. Activities of urease and nitrate reductase were inhibited by heavy metal application in both soils. Amidase activity was inhibited only with the higher application rate after some experimental periods.

引用

页码：13 / 22

页数：10

共 51 条

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