| Project/Area Number |
21580313
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Agricultural environmental engineering
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| Research Institution | Tokyo University of Agriculture |
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Principal Investigator |
TAJIMA Kiyoshi 東京農業大学, 地域環境科学部, 准教授 (30188239)
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| Co-Investigator(Kenkyū-buntansha) |
HASHIMOTO Yohei 三重大学, 大学院・生物資源学研究科, 准教授 (80436899)
TATSUNO Jyunya 近畿大学, 工学部, 准教授 (40297594)
KATO Masayoshi 東京農業大学, 農学部, 准教授 (20078223)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | 炭素隔離 / 団粒構造 / 生物多様性 / 保全耕うん / 局所耕うん栽培 / FTIR-ATR / 有機物分解特性 / 分子構造 / 有機物含有量 / ATR / 有機物分子構造 / FTIR |
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| Research Abstract |
The formation of soil aggregates was remarkable for the farmland under conservation tillage, compared to that under rotary tillage. For conservation tillage, the organic matter(OM) content in soil aggregated was found more in larger aggregated than in smaller ones. Our study showed that the change of functional groups in soil organic matter can be monitored easily by using a reflection type FTIR analyzer. A ratio of aromatic to aliphatic(Ar/Al) functional group determined by FTIR sensitively reflected the change of decomposition of OM more than a ratio of aromatic to amide(Ar/Am) functional group. The soil under conservation tillage had a greater value of Ar/Al than rotary tillage. The greatest Ar/Al value in the surface soil was found under conservation tillage, followed conventional cultivation and rotary tillage(control). Further study is needed to investigate the mechanistic relationship between soil OM functional groups and soil carbon sequestration.
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