| 静态箱法测定旱地农田温室气体时密闭时间的研究 |
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| 引用本文： | 万运帆,李玉娥,林而达,高清竹,秦晓波.静态箱法测定旱地农田温室气体时密闭时间的研究[J].中国农业气象,2006,27(2):122-124. |
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| 作者姓名： | 万运帆 李玉娥 林而达 高清竹 秦晓波 |
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| 作者单位： | 中国农业科学院农业环境与可持续发展研究所,北京,100081 |
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| 摘 要： | 应用自动观测装置对华北平原冬小麦田典型天气条件下密闭箱内气体排放通量进行了连续测定,分析了不同气体排放通量的变化过程,研究了密闭时间对其产生的影响.结果表明：测定CO2的密闭时间应不超过25min,测定N2O的密闭时间以15～30min为宜,测定CH4的密闭时间应在30min以内.此结果对静态箱法测定农田温室气体具有重要的参考价值.
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| 关 键 词： | 静态箱法 温室气体 排放通量 测定时间 旱地农田 |
| 收稿时间： | 2005-06-07 |
| 修稿时间： | 2005-06-07 |
Studies on Closing Time in Measuring Greenhouse Gas Emission from Dry Cropland by Static Chamber Method |
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| WAN Yun-fan,LIN Er-da,LI Yu'e,GAO Qing-zhu,QIN Xiao-bo.Studies on Closing Time in Measuring Greenhouse Gas Emission from Dry Cropland by Static Chamber Method[J].Chinese Journal of Agrometeorology,2006,27(2):122-124. |
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| Authors: | WAN Yun-fan LIN Er-da LI Yu'e GAO Qing-zhu QIN Xiao-bo |
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| Institution: | Institute of Environment and Sustainable Development in Agriculture,Chinese Academy of Agricultural Sciences,Beijing 100081,China |
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| Abstract: | By using continuous-automatic measurement system, the emission fluxes of different greenhouse gases from winter wheat fields in the North China Plain under typical climate conditions were continuously measured by the static chamber method. The process of emission flux changes of different greenhouse gases and closing time in the static chamber were analyzed. The results showed that the closing time in the static chamber should be within 25 minutes by measuring CO2 emission, 15-30 minutes by measuring N20 emission and less than 30 minutes by measuring CH4 emission respectively. These results have a significant reference to measurement of greenhouse gases emitted from cropland by using the static chamber method. |
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| Keywords: | Static chamber method Greenhouse gas emission flux Time of measurement Dry cropland |
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