| Budget Amount *help |
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2018: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2016: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
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| Outline of Final Research Achievements |
Pyrogenic organic matter (PyOM) is an important component in the global carbon cycle. The PyOM produced by biomass burning or fossil fuel combustion is transported to oceans by the atmosphere or rivers. However, environmental dynamics (i.e., major sources and sinks) of PyOM in marine environments have not been well-documented. In this study, dissolved PyOM (D-PyOM) collected from a wide range of marine environments, from coastal to open oceans and from surface to deep oceans, were analyzed using the benzene polycarboxylic acid (BPCA) method. We found that the possible major source of D-PyOM in the coastal and shelf regions was fluvial inputs through rivers, while D-PyOM in the open ocean was possibly derived from the atmospheric deposition.
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