Relationships between nitrogen in mineral associated organic matter and nitrogen retention of forest soils

2017 Fiscal Year Final Research Report

• Project/Area Number: 26450196
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Forest science
• Research Institution: Okayama University
• Principal Investigator: Hirobe Muneto 岡山大学, 環境生命科学研究科, 教授 (20363575)
• Co-Investigator(Renkei-kenkyūsha): Hyodo Fujio 岡山大学, 異分野融合先端研究コア, 准教授 (70435535)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: 森林土壌 / 窒素保持

Outline of Final Research Achievements

We tried to understand nitrogen (N) retention of forest soils, focusing on N in mineral associated organic matter (MAOM). In the experiment, we also tried to consider the topographic variations in soil N transformations. In the examined two forest stands, the results of N-15 addition incubation suggested that N over fine mineral particles (silt and clay) did not related to N retention, and that lower C/N ratio of MAOM indicated lower N retention. Further research in many forest types is needed for generalization.

Free Research Field

森林生態学