2011 Fiscal Year Final Research Report
What has agriculture destroyed in ecosystems?-Towards the recovery of homeostasis of soil ecosystems-
| Project/Area Number |
20248034
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Boundary agriculture
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
YANAI Junta 京都府立大学, 生命環境科学研究科, 教授 (00273491)
WATANABE Tetsuhiro 京都大学, 地球環境学堂, 助教 (60456902)
NAWATA Eiji 京都大学, 農学研究科, 教授 (30144348)
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| Project Period (FY) |
2008 – 2011
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| Keywords | 生態系プロセス / 土壌圏現象 / 物質動態 / モデル化 / モニタリング |
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| Research Abstract |
The main objectives of the present study were constructing and validating the elemental dynamics kinetic model that described the ecosystem processes for acquiring mineral resources by biosphere. The linear relationship was observed between the rates of net primary production and soil acidification. The alteration of these processes after human reclamation of forests for agricultural use was quantitatively described. The impact of soil acidity on the soil microbial processes was also quantitatively evaluated based on the two-step decomposition model including both solubilization and mineralization of polysaccharides and two-step metabolism by soil microorganisms in substrate utilization.
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