| Budget Amount *help |
¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
Fiscal Year 2019: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2018: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2017: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2016: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
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| Outline of Final Research Achievements |
The formation of podzol in boreal forests has been attributed to the accumulation of organic acids produced during decomposition of soil organic matter; this process takes place over long periods of time, often over a 100 years. In contrast, podzolization can progress rapidly in the soil found immediately beneath a hyphal mat formed by the fungus Hydnellum ferrugineum. In this study, we explored the impact of the expansion and decline of a H. ferrugineum hyphal mat on podzolization; we also explored the components and function of the microbial community in the soil. Our results showed that the hyphal mat promotes podzolization and affects the soil microbial community, decomposition of soil organic matter, and characteristics of the local vegetation. We also found that that decline or disappearance of the hyphal mat affects the soil microbial community, the ratio of stable N isotopes in the soil, and the characteristics of the local vegetation.
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