2013 Fiscal Year Final Research Report
Study on distribution of sclerotia in forest soils and their contribution to soil carbon sequestration
| Project/Area Number |
23710014
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Ibaraki University |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2013
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| Keywords | 菌核 / 森林土壌 |
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| Research Abstract |
Analyses on sclerotia and forest soils were conducted to reveal the regulating factor of sclerotia formation, their contribution to soil carbon sequestration, and their role as environmental indicator. In the case of Fagus forest in north-eastern Japan, sclerotia tended to distribute in soil with relatively high value of solid phase and high content of Alp. From the surface soil survey in Okinawa prefecture, distribution of sclerotia was not regulated by soil properties, but was strongly regulated by vegetation. Furthermore, the results of SEM-EDX and SIMS analyses on sclerotium suggested strong relationship between sclerotia formation and mobility of inorganic elements (eg. aluminum and iron). Consequently, considering relatively low loss on ignition of sclerotia from buried A horizon, of which the 14C age was over 1,000 yrBP, it was suggested that sclerotia in forest soils has high potential to contribute to soil carbon sequestration and affect to soil chemical properties.
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