Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2017: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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Outline of Final Research Achievements |
We tried to understand nitrogen (N) retention of forest soils, focusing on N in mineral associated organic matter (MAOM). In the experiment, we also tried to consider the topographic variations in soil N transformations. In the examined two forest stands, the results of N-15 addition incubation suggested that N over fine mineral particles (silt and clay) did not related to N retention, and that lower C/N ratio of MAOM indicated lower N retention. Further research in many forest types is needed for generalization.
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