New approarch of fine root analysis using VIS-NIR spectral images

2014 Fiscal Year Final Research Report

• Project/Area Number: 24580235
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Forest science
• Research Institution: Forestry and Forest Products Research Institute
• Principal Investigator: NOGUCHI Kyotaro 独立行政法人森林総合研究所, 立地環境研究領域, 主任研究員 (70353802)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 多重分光画像解析 / 生細根 / 枯死細根 / マルチバンドイメージスキャナ

Outline of Final Research Achievements

This study examined availability of VIS-NIR spectral images to distinguish live fine roots from dead fine roots obtained from a 35-year-old Chamaecyparis obtusa stand. The live-dead classification was improved when training data was prepared using both of 1st and higher order roots. Furthermore, classification accuracy was improved by using VIS-NIR reflectance images including two NIR bands. In addition, fine root production and turnover rates in the same C. obtusa stand were estimated to be 45 g m-2 y-1 and 0.34 yr-1, respectively.

Free Research Field

根圏生態学