2016 Fiscal Year Final Research Report
Export of amino N from forest and its effects on paddy soil fertility
| Project/Area Number |
26520312
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 特設分野 |
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| Research Field |
Food Cycle Research
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| Research Institution | Forestry and Forest Products Research Institute |
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Principal Investigator |
Fujii Kazumichi 国立研究開発法人森林総合研究所, 立地環境研究領域, 主任研究員 (60594265)
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| Project Period (FY) |
2014-07-18 – 2017-03-31
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| Keywords | アミノ酸 / 窒素無機化 / 土壌有機物 / 渓流水 |
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| Outline of Final Research Achievements |
In a forest-paddy system, streamwater can provide basic cations, whilst N supply was assumed to be small. However, streamwater N includes suspended and dissolved forms of N. Thus, we quantified N flux in forest-paddy system and estimated N mineralization potentials in paddy soils. The results showed that amino acid N flux via streamwater was small, but its rapid turnover could provide inorganic N to rice in paddy soil. We caould also show quantitatively that N migration through suspended matters and their mineralization can not be neglected as "mnatural fertilizer" on paddy soils.
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| Free Research Field |
土壌生態学
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