Assessment of the Methane Oxidation Capacity of Soils
Assessment of the Methane Oxidation Capacity of Soils
复制标题
土壤甲烷氧化能力的评估
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
A. Lagerkvist
中科院分区：
文献类型：
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作者：
C. Maurice;A. Lagerkvist
采用一种基于甲烷氧化压降的新方法对3种土壤基质的甲烷氧化能力进行了评价。研究了培养温度、水分和甲烷含量对氧化能力的影响。观察到的参数是非甲烷氧化耗氧量，甲烷同化，滞后期的长度之前，达到稳定的压力下降，初始压力下降和最大压力下降。对取自生物过滤器的填充材料进行了测试。滞后期的长度是土壤先前暴露于甲烷排放的指数。选择30°C的孵育温度和持水能力下的土壤湿度来标准化测试。非甲烷氧化菌的耗氧量占总耗氧量的40 - 60%，而甲烷同化量占总耗氧量的40 - 50%。
Methane oxidation capacity of three soil matrices was assessed using a new method based on the pressure fall resulting from methane oxidation. The effects of incubation temperature, moisture and methane content on the oxidation capacity were studied. Parameters observed were non-methanotrophic oxygen consumption, methane assimilation, length of the lag period before steady pressure fall was reached, initial pressure fall and maximum pressure fall. Filling material taken from a biofilter was tested. The length of the lag period was an index of prior exposure of the soil to methane emissions. Incubation temperature of 30°C and soil moisture at the water-holding capacity were chosen to standardize the test. Oxygen depletion by non-methanotrophs varied between 40 and 60% of the total oxygen consumption while methane assimilation was at 40 to 50% of the total methane consumption.