【摘要】 [目的]探求表征土壤重金属污染的主要指示酶,为重金属污染土壤环境质量评价提供理论依据。[方法]以东北黑土为主要研究对象,采用实验室模拟试验,研究不同浓度重金属Cu、Zn、Pb、Cd单因素污染对土壤中过氧化氢酶、脲酶、转化酶、蛋白酶和脱氢酶活性及微生物群落的影响。[结果]土壤脲酶活性与重金属的污染程度呈良好的负相关关系,土壤过氧化氢酶活性对Cu、Zn含量的增加表现较敏感,土壤转化酶活性对Cu非常敏感。[结论]土壤脲酶活性最适于作为土壤重金属污染的敏感指标。更多还原

【Abstract】 [Objective]The research aimed to explore the soil enzymes for characterizing the pollution of heavy metal,and then to provide a theoretical basis for heavy metal contaminated soil environmental quality assessment.[Method]Pot experiment was conducted to study the effects of heavy metal pollution on enzymic activities(urease,calatase,intertase and et al) in black soil and microbial communities.[Result]There was a good negative correlation between urease activity and heavy metal pollution.Soil catalase activity was more sensitive to the content of Cu or Zn,and soil invertase activity was very sensitive to Cu contnet.[Conclusion]Urease activity was suited as a sensitive indicator for soil heavy metal pollution.更多还原