改性纳米黑碳对棕壤有效态Cu、酶活性和微生物呼吸的影响

culture experiment were carried out to study the effects of Modified Nano-Black Carbon on Content of Bioavailable Cu(II), enzyme and microbial Activity in Brown Soil. The results showed that during the treatment of 60 days Modified Nano-Black resulted in a decrease in soil pH and Bioavailable Cu concentration and its content decreased with the added content of Modified Nano-Black. MBC had a remarkable activation effect on soil urease activity and a weak inhibition on soil catalase activity. Soil respiration increased and then decreased during the treatment, and respiration rate had no significant difference from the untreated soil. Catalase activity were negatively correlated with soil Bioavailable Cu concentration, but positively correlated with the amount of Modified Nano-Black. Soil Bioavailable Cu concentration were positively correlated with the amount of Modified Nano-Black. It indicated that MBC increased the activity of soil urease and respiration. It has a great value in remediating copper-contaminated soils.