| 施粪对典型草原温室气体排放的影响 |
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| 引用本文： | 刘月,念慧文,侯扶江.施粪对典型草原温室气体排放的影响[J].草业科学,2020(6):1017-1024. |
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| 作者姓名： | 刘月 念慧文 侯扶江 |
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| 作者单位： | 兰州大学草地农业生态系统国家重点实验室/兰州大学农业农村部草牧业创新重点实验室/兰州大学草地农业科技学院 |
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| 基金项目： | 中国西部主要草原利用变化的碳平衡效应(31172249);长江学者和创新团队发展计划项目(IRT-17R50)。 |
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| 摘 要： | 研究以陇东典型草原为对象,采用静态箱-气象色谱分析法测定典型草原滩羊放牧生态系统在施粪7、14、21 d和不同温度下CO2、CH4和N2O气体通量,分析了施粪后时间和温度对3种主要温室气体通量的影响。主要结果如下:1)施粪具有抑制典型草原3种主要温室气体通量趋势,温室气体通量随施粪后时间的延长而下降。施粪后草原CH4吸收通量减少;CO2和N2O的排放通量先增加,但是21 d后低于对照组。2)除对照组CO2排放通量与土壤温度呈正相关关系外,土壤温度与施粪组的对照组的CH4吸收量、N2O排放量,施粪组的CO2排放量呈负相关关系。
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| 关 键 词： | 土壤 放牧 CH4 CO2 N2O |
Effects of excrement application on greenhouse gas emissions in a typical steppe |
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| LIU Yue,NIAN Huiwen,HOU Fujiang.Effects of excrement application on greenhouse gas emissions in a typical steppe[J].Pratacultural Science,2020(6):1017-1024. |
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| Authors: | LIU Yue NIAN Huiwen HOU Fujiang |
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| Institution: | (State Key Laboratory of Grassland Agro-ecosystems/Key Laboratory of Grassland Livestock industry innovation,Ministry of Agriculture and Rural Affairs/College of Pastoral Agriculture Science and Technology,Lanzhou University,Lanzhou 730020,Gansu,China) |
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| Abstract: | An excrement application experiment was conducted to investigate the effects of excrement application time and temperature on greenhouse gas(GHG)emission in a typical by measuring CH4,CO2 and N2O at 7,14 and 21 days and different temperature using the chamber-gas chromatography method.This study indicated following results:1)The excrement application decreased the GHG flux in a typical steppe,which also decreased with the application time.Additionally,the excrement application decreased the absorption for CH4,which was lower than that of control.Emission for CO2 and N2O increased,and then decreased to lower than the control by 21 days later.2)In addition to the positive correlation between CO2 emission and soil temperature of control,a negative correlation was found for the soil temperature with the CH4 absorption and N2O/CO2 emission in the excrement application and control groups. |
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| Keywords: | soil grazing CH4 CO2 N2O |
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