JapanFlux2024 JP-Nap Nunoike Agricultural Pond

There are many irrigation ponds for agriculture in Setouchi area. Photosynthesis of algae may contribute to the absorption of carbon dioxide, while sediment in the bottom of ponds may contribute to the emission of methane under anaerobic environment.In this study, we observed carbon dioxide and methane gas exchanges over a pond by eddy covariance method in Kakogawa city, Hyogo prefecture. We analyzed the relationship between greenhouse gas dynamics and environmental factors to elucidate the mechanism regulating greenhouse gas dynamics in the pond.濑户内（Setouchi）区域内分布有大量农业灌溉池塘。藻类的光合作用可促进二氧化碳的吸收，而池塘底泥在厌氧环境下则可能促进甲烷的排放。本研究于兵库县加古川市的一处池塘中，采用涡度相关法（eddy covariance）观测了池塘与大气间的二氧化碳和甲烷气体交换过程，并分析了温室气体动态与环境因子之间的关联，以阐明调控该池塘温室气体动态的内在机制。