| 要旨トップ | 本企画の概要 | 日本生態学会第66回全国大会 (2019年3月、神戸) 講演要旨
ESJ66 Abstract


シンポジウム S07-2  (Presentation in Symposium)

スキャナーによる土壌画像から細根動態を抽出する方法論:観測者と画像サイズの影響
Soil image analysis procedure for optical scanning of fine-root dynamics: Effect of observer and root-viewing window size

*久米朋宣(九州大学), 大橋瑞江(兵庫県立大学), 牧田直樹(信州大学), Khoon Kho Kho(MPO), 片山歩美(九州大学), 遠藤いず貴(兵庫県立大学), 松本一穂(琉球大学), 池野英利(兵庫県立大学)
*Tomonori Kume(Kyushu Univ.), Mizue Ohashi(Univ. Hyogo), Naoki Makita(Shinshu Univ.), Khoon Kho Kho(MPO), Ayumi Katayama(Kyushu Univ.), Izuki Endo(Univ. Hyogo), Kazuho Matsumoto(Univ. Ryukyus), Hidetoshi Ikeno(Univ. Hyogo)

Clarifying the dynamics of fine roots is critical to understanding carbon and nutrient cycling in forest ecosystems. An optical scanner can potentially be used in studying fine-root dynamics in forest ecosystems. The present study examined image analysis procedures suitable for an optical scanner having a large (210 mm  297 mm) root-viewing window. We proposed a protocol for analyzing whole soil images obtained by an optical scanner that cover depths of 0–210 mm. In this study, first,we tested our protocol using six observers with different experience in studying roots. The observers obtained data from the manual digitization of sequential soil images recorded for a Bornean tropical forest according to the protocol. Second, we examined the potential tradeoff between the soil image size and accuracy of estimates of fine-root dynamics in a simple exercise. Also, we discuss implications for quantifying stand-scale fine root dynamics based on our outcomes.


日本生態学会