The influence of soil organic carbon on interactions between microbial parameters and metal concentrations at a long-term contaminated site.
The influence of soil organic carbon on interactions between microbial parameters and metal concentrations at a long-term contaminated site.
复制标题
土壤有机碳对长期污染场地微生物参数和金属浓度之间相互作用的影响。
DOI：
10.1016/j.scitotenv.2014.08.079
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
P. Tlustoš
中科院分区：
文献类型：
--
作者：
G. Mühlbachová;M. Sagova;M. Omelka;J. Száková;P. Tlustoš
研究了铅、锌、镉、砷和铜沉积物对土壤微生物参数的影响。在121个不同的污染和土壤有机碳（SOC）的网站在三个重复收集土壤样品。微生物生物量，呼吸，脱氢酶活性和代谢商的测定和相关的总金属和可提取的土壤中的浓度。目的是通过评估土壤有机碳在关系中的作用，分析有毒金属和微生物参数之间复杂的相互作用。SOC的影响是显着的，在所有的相互作用，并改变微生物参数和金属组分之间的相关性从负到正。在某些情况下，有机碳的影响，结合粘粒和土壤pH值。最终，脱氢酶活性呈负相关的总金属浓度和乙酸提取的金属，呼吸和代谢商是硝酸铵提取的金属。脱氢酶活性是最敏感的微生物参数，最经常与污染。总锌和可提取锌最常与微生物参数相关。大的数据集，使强大的解释有机质功能的差异经常发生在分析污染的土壤过程。
The effects of lead, zinc, cadmium, arsenic and copper deposits on soil microbial parameters were investigated at a site exposed to contamination for over 200 years. Soil samples were collected in triplicates at 121 sites differing in contamination and soil organic carbon (SOC). Microbial biomass, respiration, dehydrogenase activity and metabolic quotient were determined and correlated with total and extractable metal concentrations in soil. The goal was to analyze complex interactions between toxic metals and microbial parameters by assessing the effect of soil organic carbon in the relationships. The effect of SOC was significant in all interactions and changed the correlations between microbial parameters and metal fractions from negative to positive. In some cases, the effect of SOC was combined with that of clay and soil pH. In the final analysis, dehydrogenase activity was negatively correlated to total metal concentrations and acetic acid extractable metals, respiration and metabolic quotient were to ammonium nitrate extractable metals. Dehydrogenase activity was the most sensitive microbial parameter correlating most frequently with contamination. Total and extractable zinc was most often correlated with microbial parameters. The large data set enabled robust explanation of discrepancies in organic matter functioning occurring frequently in analyzing of contaminated soil processes.
影响因子：
9.7
作者：
Khan, Khalid Saifullah;Heinze, Stefanie;Joergensen, Rainer Georg
通讯作者：
Joergensen, Rainer Georg