2011 Fiscal Year Final Research Report
Inverse estimation of effective hydraulic properties of forest soils
| Project/Area Number |
21580197
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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 |
Forest science
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| Research Institution | Forestry and Forest Products Research Institute |
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Principal Investigator |
KOBAYASHI Masahiro 独立行政法人森林総合研究所, 立地環境研究領域, 主任研究員 (50353686)
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| Co-Investigator(Kenkyū-buntansha) |
SHINOMIYA Yoshiki 独立行政法人森林総合研究所, 立地環境研究領域, 主任研究員 (20353716)
TSURITA Tatsuya 独立行政法人森林総合研究所, 立地環境研究領域, 主任研究員 (30353775)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 森林土壌 / 選択流 / 逆解析 / 有効水理特性 |
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| Research Abstract |
Soil water content and flux were measured in Hinoki plantation forests with different soil types. Using observed data we conducted inverse estimations for "effective" hydraulic properties of the soils under rainfall. The estimated saturated water content of well-structured soil became very small when the soil dried. Preferential flow resulted by water repellency was thought to be the reason for the incomplete saturation. Inverse estimation should be a promising method to obtain effective hydraulic parameters of soils under physical nonequilibrium condition.
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