| Budget Amount *help |
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2020: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2019: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Outline of Final Research Achievements |
The purpose of this study is to evaluate the seriousness of soil degradation in Sub-Saharan Africa based on the function and diversity of soil microorganisms involved in the nitrogen cycle, and to clarify their resilience due to the application of organic matter. For this purpose, field surveys were carried out to determine the actual state of soil degradation. We clarified the changes in soil physicochemical properties associated with soil conditions, and conducted soil gene analysis in collaboration with overseas researchers. We discovered that microbial communities diversified due to agricultural land development, and that this was related to the improvement of microbial functions such as nitrification. Furthermore, we clarified that some of the microbial species and functions that respond to agricultural land development depend on the soil sampling site, but that there are species and functional genes that respond in common regardless of the sampling site.
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