Effects of zeolite amendment on microbial biomass and respiratory activity in heavy metal contaminated soils
Effects of zeolite amendment on microbial biomass and respiratory activity in heavy metal contaminated soils
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DOI：
10.17221/4190-pse
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发表时间：
2018-02
影响因子：
2.4
通讯作者：
G. Mühlbachová;T. Šimon
中科院分区：
文献类型：
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作者：
G. Mühlbachová;T. Šimon
采用沸石和葡萄糖进行室内培养试验，以评价沸石改良剂对保加利亚Kremikovtzi（K1，K2）和捷克Pibram（P1，P2）重金属污染土壤微生物特性的影响。克列米科夫齐土壤中微生物生物量含量呈下降趋势，而普日布拉姆土壤中沸石改良后没有发现显着影响。施用沸石后，克氏土呼吸活性和代谢商（qCO2）在第2和第3天下降，而对棕壤无影响。重金属降低了Kremikovtzi土壤中的微生物生物量的含量，而污染的土壤中的微生物生物量相比，非污染的土壤在培养过程中，可能是由于较低的矿化的碳。沸石对重金属污染的芦苇地土壤中CO2和qCO2的释放没有明显的影响。在未污染的芦苇土壤中的呼吸活性在实验期间保持较低的污染相比，但沸石的添加增加qCO2。
A laboratory incubation experiment with zeolite and glucose was performed to evaluate the effects of zeolite amendment in heavy metal contaminated soils from two smelter areas on some microbial characteristics [Kremikovtzi (K1, K2) in Bulgaria and Přibram (P1, P2) in the Czech Republic]. The content of microbial biomass showed a tendency to decrease in Kremikovtzi soils whereas in Přibram soils no significant effects were found after zeolite amendment. Respiratory activity and metabolic quotient (qCO 2 ) decreased on the second and third day in Kremikovtzi soils amended with zeolite, no effects were observed in Přibram soils. Heavy metals decreased the content of microbial biomass in Kremikovtzi soils whereas the contaminated soil from Přibram area had the highest microbial biomass compared to non-contaminated soil during incubation, probably due to lower mineralization of carbon. The respiratory activity did not show any significant effects of zeolites on the evolution of CO 2 and qCO 2 in heavy metal contaminated Přibram soil. The respiratory activity in non-contaminated Přibram soil remained during the experiment lower in comparison to contaminated one, however the addition of zeolite increased qCO 2 .