2009 Fiscal Year Final Research Report
Changes in soil CO_2 concentration and soil respiration during rainfall events: analysis focused on change of soil gas diffusion coefficient
| Project/Area Number |
20780112
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Forest science
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| Research Institution | The University of Tokyo |
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Principal Investigator |
HOTTA Noeifumi The University of Tokyo, 大学院・農学生命科学研究科, 助教 (00323478)
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| Project Period (FY) |
2008 – 2009
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| Keywords | 土壌呼吸 / 土壌中二酸化炭素濃度 / 土壌中ガス拡散係数 / 降雨 / 季節性 |
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| Research Abstract |
Soil respiration and soil CO_2 concentration profile were measured during two rainfall events to investigate the effect of rainfall on soil respiration and soil CO_2 concentration. Those data were compared with gas diffusion coefficients in soil derived from observed soil temperature and moisture. As a result, soil CO_2 storage determined the patterns of soil CO_2 concentration and soil respiration during rainfall. The pattern was different among rainfall events due to different soil CO_2 regime which was induced by seasonality of rainfall and soil CO_2 production profile.
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