JapanFlux2024 JP-Km2 Kushiro Mire: Akanuma Bog

Wetlands are estimated to be the largest natural source of CH4 in the global CH4 budget. However, because of the large point-to-point variability in observed CH4 emissions from the marshes, the range of uncertainties in global estimates of emissions from the marshes is large, and further accumulation of observational data and analysis of the sources of flux variability are required.Kushiro Mire is the largest natural wetland in Japan, stretches to the north of kushiro city in eastern Hokkaido, Japan. To understand CH4 emissions in subarctic marshes located in the mid-latitudes, We measured CH4 fluxes during the midsummer season in a high marsh (a community dominated by Miscanthus sinensis) using the eddy correlation method.湿地被认为是全球甲烷（CH4）收支中最大的天然排放源。然而，由于观测得到的沼泽甲烷排放存在显著的点位间变异性，全球沼泽甲烷排放估算的不确定性范围较大，因此需要进一步积累观测数据并分析通量变异性的成因。 钏路湿地（Kushiro Mire）是日本最大的天然湿地，坐落于日本北海道东部钏路市北部区域。为探明中纬度亚寒带沼泽的甲烷排放特征，本研究采用涡度相关法（eddy correlation method），于盛夏时节对一处以芒草（Miscanthus sinensis）为优势群落的高草沼泽开展了甲烷通量观测。