2021 Fiscal Year Final Research Report
Development of water erosion reduction technique and its estimation method by soil conditioner for soil and water conservation and soil remediation
| Project/Area Number |
19K06289
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 41030:Rural environmental engineering and planning-related
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| Research Institution | Utsunomiya University |
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Principal Investigator |
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| Project Period (FY) |
2019-04-01 – 2022-03-31
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| Keywords | 土壌環境保全 / 環境調和型農林水産 / 土壌侵食 / 土壌改良 / 水・物質動態解析モデル |
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| Outline of Final Research Achievements |
The introduction of large-scale and modern agricultural practices in farmlands has resulted in soil erosion and loss of nutrients contained in the soil, and this has played a significant role in the degradation of the natural environment due to soil erosion and loss of nutrients and sediments. In this research project, we aimed to quantify, evaluate, and predict the erosion control effects of soil improvement measures, including the return of sedimented soil from sedimentation ponds to agricultural land, in order to contribute to soil and water conservation and to improve soil fertility. The soil erodibility associated with soil amendment was quantitatively identified by laboratory experiments, and erosion analysis using a process-based model was conducted to evaluate the erosion control effect of soil amendment, together with the results of field tests.
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| Free Research Field |
農地保全学，流域物質循環学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究課題では，土壌侵食が問題となる主要土壌および地域を対象として，室内実験によって土壌改良に伴う受食性を定量的に同定し，数値解析モデルを用いた侵食解析を実施し，野外試験の結果とともに，土壌改良による侵食抑制効果について評価した。土壌侵食の程度を決定する土壌の物理性の因子は何なのか，団粒化の促進等の土壌の物理性を改善させる土壌改良が土壌侵食を効果的に抑制することができるのかについて実証的な研究を遂行することによって，持続的な作物生産と環境保全型の農業方法の両立を目指した。
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