Drying and rewetting cycles substantially increased soil CO₂ release

Professor Syuntaro Hiradate
Facutly of Agriculture

The amount of carbon dioxide (CO₂) released by microbial decomposition of soil organic carbon on a global scale is approximately five times greater than the amount of anthropogenic CO₂ emissions. Thus, it is essential to clarify the impact of climate change on soil CO₂ release dynamics.

A collaborative research group consisting of Dr. Hirohiko Nagano and Ms. Yuri Suzuki of Niigata University with Professor Syuntaro Hiradate from Kyushu University’s Facutly of Agriculture, and the Japan Atomic Energy Agency conducted incubation experiments on forest and pastureland soils at 10 locations across Japan. The research group revealed that the amount of CO₂ released from soil increases significantly due to repeated drying and rewetting cycles (DWCs) expected to be caused by changes in precipitation patterns due to global warming.

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Syuntaro Hiradate, Professor
Facutly of Agriculture
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