重金属污染矿区复垦土壤微生物生物量及酶活性的研究

对铜矿废弃地复垦土壤微生物生物量及酶活性研究结果表明 ,与对照土壤相比 ,矿区复垦土壤微生物生物量C、N和P均有所降低 ,微生物商Cmic Corg可作为矿区重金属污染土壤微生物学敏感指标之一 ;酶活性变化与此相似 ,脲酶、脱氢酶和酸性磷酸酶与对照差异显著 ,其他则与对照差异明显 ,一定程度削弱了矿区土壤中C、N营养元素周转速率和能量循环

The microbial bionmss and enzylim activities of reclaimed minesoils in the heavy metal pollution area

The soil microbial biomass and soil enzyme activities in copper mining wasteland and non minesoils were studied. The results indicate that the soil microbial biomasses C,N,and P decline compared with those of the non minesoils. The ratio of C mic / C org can be as one of the soil microbial indexes in heavy metal pollution area. The soil enzyme activities display the similar pattern. T test show that the differences in urease, dehydrogenase, acid phosphtase between the mining wasteland and the non minesoils are significant, the other enzyme activities are different significantly between the mining wasteland and the control, all of which may lead to the impairment of turnover and cycle velocity of C, N nutrition elements in minesoils.