| Project/Area Number |
24580096
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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 | 一般 |
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| Research Field |
Plant nutrition/Soil science
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| Research Institution | Forestry and Forest Products Research Institute |
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Principal Investigator |
TANIKAWA Toko 独立行政法人森林総合研究所, 関西支所, 主任研究員 (10353765)
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| Co-Investigator(Kenkyū-buntansha) |
HASHIMOTO Yohey 東京農工大学, (連合)農学研究科, 准教授 (80436899)
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| Co-Investigator(Renkei-kenkyūsha) |
WAGAI Rota 独立行政法人農業環境技術研究所, 主任研究員 (80456748)
KANDA Kazuhiro 兵庫県立大学, 高度産業科学技術研究所, 教授 (20201452)
KURODA Katsushi 独立行政法人森林総合研究所, 主任研究員 (90399379)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | イオウ化合物 / 蓄積機構 / アルミニウム遊離酸化物 / 鉄遊離酸化物 / エステル硫酸 / 森林土壌 / アルミニウム腐植複合体 / 土壌 / 有機物安定化機構 / 土壌酸性度 / イオウ / エステル / 土壌鉱物 / 土壌有機物安定化 / 硫酸イオン / 溶脱 |
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| Outline of Final Research Achievements |
In the present study, we hypothesized that the inhibition of ester sulfate-S mineralization was caused by higher contents of active Al ions in forest soils which might leads to the stabilization of ester sulfate-S incorporated into Al-humus complexes. For this aim, we conducted comprehensive analytic approaches combining with soil incubation, sequential density fractionation, XAFS and SEM-EDX measurements. The peak line in both lighter/heavier fractions of ester sulfate-S in the soils after the incubation treatment seemed slightly extended compared with those before the incubation treatment. However, the order of the ester sulfate-S concentration in these fractions was not clear in the spectra. In the SEM-EDX point analysis, both of the sulfur concentration and aluminum concentrations varied widely at measurement points. To verify the hypothesis, further investigations about/on the possibility of uneven ester sulfate-S distribution by soil particles would be needed.
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