Combined assessment of methane oxidation and nitrification: an indicator of air-borne soil pollution?
Combined assessment of methane oxidation and nitrification: an indicator of air-borne soil pollution?
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甲烷氧化和硝化的联合评估：空气土壤污染的指标？
DOI：
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发表时间：
2001
影响因子：
6.5
通讯作者：
A. Priemé
中科院分区：
文献类型：
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作者：
S. Christensen;Anna Degórska;A. Priemé
抽象的。土壤硝化作用和甲烷氧化活性测定在6个森林土壤在西南部的波兰地区不同的影响重金属和碳氢化合物污染的焦炭生产厂，道路交通和一般的城市来源。在一个模型中，对调查的六个森林地区内80个地点的数据进行多变量分析，确定Ni和一种未识别的碳氢化合物（H1）对硝化作用和CH4氧化作用有负面影响（P=0.02），还包括土壤有机质和pH值。这两个可疑毒物的单变量统计分析表明，镍对硝化作用的负面影响在土壤Ni含量最高的两个区域内，土壤Ni含量均高于对照区（P<0.05）。此外，在发生CH 4氧化的地点中，土壤H1浓度最高的两个地点，H1对CH 4氧化有负面影响（P<0.06）。硝化和甲烷氧化的分布呈负相关，因为将预期从他们的对比土壤扰动和无机氮水平的反应。在至少发生了两种过程之一的站点中，Ni或H1水平高的站点仅占18%，这显著低于既没有发生硝化作用也没有发生CH4氧化作用的站点中高污染物浓度的频率（67%）（P<0.05）。明显的普遍性，至少有一个的两个过程中发生在未污染的土壤样品表明，硝化和甲烷氧化相结合的测量可以作为一个有用的污染指标相比，随机选择的毒理学研究的过程。
Abstract. Soil nitrification and CH4 oxidation activity were measured in six forested soils in a region of south-western Poland differently affected by heavy metals and hydrocarbon contamination from a coke production plant, road traffic and general urban sources. A multivariate analysis of data from 80 sites within the six forested areas investigated identified Ni and an unidentified hydrocarbon (H1) as negatively affecting nitrification and CH4 oxidation in a model (P=0.02) that also included soil organic matter and pH. Univariate statistical analysis of these two suspected toxicants demonstrated a negative influence of Ni on nitrification (P<0.05) within the two areas in which soil Ni concentrations were highest. In addition, it revealed a negative influence of H1 on CH4 oxidation (P<0.06) at the two sites with the highest soil concentrations of H1 among those sites where CH4 oxidation occurred. The distribution of nitrification and CH4 oxidation were inversely related, as would be expected from their contrasting responses to soil disturbances and inorganic N levels. Among sites where at least one of the two processes occurred, Ni or H1 levels were high in only 18% of them, which is significantly lower than the frequency of high pollutant concentrations (67%) among sites where neither nitrification nor CH4 oxidation occurred (P<0.05). The apparent ubiquity with which at least one of the two processes occurs in unpolluted soil samples suggests that combined measurement of nitrification and CH4 oxidation could serve as a useful pollution indicator compared with processes which are selected more randomly for toxicological studies.