Spatial analysis of regional scale soil functions using soil inventory data of forest lands in Japan

2016 Fiscal Year Final Research Report

• Project/Area Number: 26450210
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Forest science
• Research Institution: Japan International Research Center for Agricultural Sciences (2016); Forestry and Forest Products Research Institute (2014-2015)
• Principal Investigator: Imaya Akihiro 国立研究開発法人国際農林水産業研究センター, 林業領域, 主任研究員 (60353596)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 土壌機能 / 広域評価 / インベントリ / 土壌化学性

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.

Free Research Field

森林土壌