| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
The maps of spatial soil chemical properties of forest lands in Japan were established by the soil pHs, cation exchangeable capacity, exchangeable cations contents and exchangeable aluminum content in soil samples collected in ca. 800 forest plots all over Japan. The regional scale assessment of soil functions such as Al toxicity for plants were derived from these maps of soil chemical properties. The soil types and addition of volcanic ash were related to soil chemical properties. Importance of evaluation for volcanic ash addition was indicated from growth performance of commercial tree stands. The estimation accuracy for probability appearance of Andosols was improved by partition analysis using spatial data.
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