重金属铜和锌污染对土壤环境质量生物学指标的影响

土壤微生物生物量碳、微生物生物量氮、微生物商、代谢商、土壤酶活性等是表征土壤质量的重要生物学指标,本文对浙江省富阳市环山乡遭受重金属复合污染的铜锌冶炼厂附近土壤进行了土壤生物学指标的测定,结果表明,污染土壤的重金属元素主要是铜和锌,二者对土壤磷酸酶和过氧化氢酶活性具有不同程度的抑制作用,有效铜和有效锌与土壤代谢商均呈极显著的正相关,而与微生物生物量碳、微生物生物量氮、微生物商均呈显著负相关.

Effects of Cu and Zn contamination on soil biological indicators of environmental quality

Some important biological parameters, namely, microbial biomass carbon, microbial biomass nitrogen, microbial quotient, metabolic quotient and soil enzyme activity in a heavy metal contaminated soil around a Copper (Cu) Zinc (Zn) smelter in Fuyang city of Zhejiang Province were measured to assess soil quality The result showed that the main heavy metal elements found in the polluted area were Cu and Zn which inhibited the soil phosphatase and catalase activities to different extent A significant positive correlation was shown to exist between available Cu, Zn content and soil metabolic quotient whereas a negative correlation between available Cu, Zn content and microbial biomass carbon, microbial biomass nitrogen as well as microbial quotient