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- B31H-1829: Measuring CO2 and CH4 fluxes in rice paddies using the closed chamber and Bowen ratio methods
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Board 1829‚ Hall EFG (Poster Hall)NOLA CC
Author(s):Generic 'disconnected' Message
Kosuke Noborio, Meiji University (First Author, Presenting Author)
Naoto Sato, Meiji University
Shion Yamanaka, Meiji University
Colin Campbell, METER
Douglas Cobos, METER Group, Inc
Toshihiro Doi, Meiji University
Measuring greenhouse gases like carbon dioxide (CO2) and methane (CH4) emitted by rice paddies is important for understanding how farming practices affect climate change. We compared three different methods to measure these gases during the growing season at rice paddies in Japan. The automated closed chamber method provided precise, small-scale measurements of gas emissions. The Bowen ratio method measured gases and energy exchange continuously over larger areas using sensors for gases, temperature, humidity, and radiation. The variance-Bowen ratio method measured only energy exchanges without gases. Each method offered unique insights, and their results complemented each other well. Combining these techniques gives a clearer picture of how greenhouse gases behave in rice paddies, helping farmers manage their fields to reduce emissions and store more carbon in the soil.
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