首页> 美国政府科技报告 >Greenhouse gases N(sub 2)O, CH(sub 4) and CO(sub 2) in coniferous forest soils as influenced by nitrogen input, acidity, moisture and temperature. (Drivhusgassene N(sub 2)O, CH(sub 4) og CO(sub 2) i barskogsjord under paavirking av N-tilfoersel, surhet, fuktighet og temperatur)

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Greenhouse gases N(sub 2)O, CH(sub 4) and CO(sub 2) in coniferous forest soils as influenced by nitrogen input, acidity, moisture and temperature. (Drivhusgassene N(sub 2)O, CH(sub 4) og CO(sub 2) i barskogsjord under paavirking av N-tilfoersel, surhet, fuktighet og temperatur)

机译：温室气体N（sub 2）O，CH（sub 4）和CO（sub 2）在针叶林土壤中受氮输入，酸度，水分和温度的影响。（Drivhusgassene N（sub 2）O，CH（sub 4）og CO（sub 2）i barskogsjord under paavirking av N-tilfoersel，surhet，fuktighet og temperatureur）

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The thesis relates to an investigation done on greenhouse gases in coniferous forest soils. The production of nitrous oxide (N2O) and carbon dioxide (CO2), and the consumption of methane (CH4) in a temperate forest soil were studied by a rapid and sensitive gas chromatographic (GC) method for analysing all three greenhouse gases at or below ambient levels. Gas fluxes were measured in soil incubation and lysimeter experiments. 15 soil samples were taken at random within a 100 sq m area in a Norway spruce forest stand (Picea abies). The fluxes of N2O, CH4, and CO2 were measured under standardized laboratory incubation conditions to investigate spatial variability in relation to other factors such as nitrogen (N) mineralization rate, nitrification rate, organic carbon (OC), total N, and pH. The effects of temperature, soil moisture content, and ammonium addition were also studied in an incubation experiment. A more detailed study was made of the effects of different amount of N input and acidification treatments on fluxes and soil concentration of CH4, N2O, and CO2 for one year in soil (Typic Udorthent) in lysimeter from 100-year-old Scots pine (Pinus sylvestris) forest. 141 refs., 14 figs., 8 tabs.

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Sitaula, B. K.;
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年度 1994
页码 1-81
总页数 81
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Greenhouse Gases; Soil chemistry; Carbon Dioxide; Chromatography; Conifers; Data Analysis; Forests; Methane; Nitrous Oxide; Norway;

机译：温室气体;土壤化学;二氧化碳;色谱;针叶树;数据分析;森林;甲烷;一氧化二氮;挪威;

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Greenhouse gases N(sub 2)O, CH(sub 4) and CO(sub 2) in coniferous forest soils as influenced by nitrogen input, acidity, moisture and temperature. (Drivhusgassene N(sub 2)O, CH(sub 4) og CO(sub 2) i barskogsjord under paavirking av N-tilfoersel, surhet, fuktighet og temperatur)

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