| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Research Abstract |
I examined some aspects of soil organic matter (SOM) stabilization and temperature sensitivity of SOM decomposition with a particular focus on mineral-organic matter interaction. First, using selective dissolution techniques, I quantified the amount of SOM associated with soil iron and aluminum phases among a wide range of filed soils for the first time. Second, I separated SOM by density and revealed that the molecular structure of the SOM in low-density fraction had strong control on the temperature sensitivity of SOM decomposition in accord with Arrhenius kinetic theory.
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