Effect of High Temperature Soil Sterilization on Surface Soil Structure and Transport Properties

2015 Fiscal Year Final Research Report

• Project/Area Number: 25450355
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Rural environmental engineering/Planning
• Research Institution: Tokyo University of Agriculture and Technology
• Principal Investigator: Saito Hirotaka 東京農工大学, (連合)農学研究科(研究院), 准教授 (70447514)
• Co-Investigator(Kenkyū-buntansha): KOHGO Yuji 東京農工大学, 大学院農学研究院, 教授 (30414452)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 土壌物理性 / 温度依存性 / 団粒構造 / 土壌診断 / 地中レーダー

Outline of Final Research Achievements

In this study, we investigate the effect of temperature on aggregate stability of upland strongly aggregated volcanic ash soils. Results showed that aggregate stability decreases with temperature for larger aggregates, while elution of binding agents, polysaccharides, increases with temperature for stable smaller aggregates. We also developed an integrative soil evaluation approach based upon soil physical properties using radar charts to evaluate the effect of temperature. A non-destructive method to visualize infiltration processes of hot water in field soils using array ground penetrating radar was tested and their effectiveness was confirmed.

Free Research Field

地水環境工学