講演詳細

立地部門[Forest Environment]

日付	2026年3月18日
開始時刻	ポスター発表
会場名	多目的ホール
講演番号	PI-16
発表題目	Can bamboo forests act as carbon sinks? _ A comparison between Madake and Moso bamboo species. Can bamboo forests act as carbon sinks? _ A comparison between Madake and Moso bamboo species.
所属	九州大学
要旨本文	Giant bamboo forests are expanding across East Asia, yet species-specific differences in belowground carbon dynamics remain poorly understood. We conducted a two-year field study (April 2022_March 2024) in Madake (Phyllostachys bambusoides) and Moso (Phyllostachys pubescens) bamboo forests in southwestern Japan to quantify soil respiration (Rs) and its components. Monthly Rs measurements combined with litter- and root-exclusion treatments enabled partitioning into autotrophic respiration (Ra), litter-derived heterotrophic respiration (Rh_L), and soil organic matter_derived heterotrophic respiration (Rh_SOM). Soil temperature effected on Rs and its components than soil moisutre, and Moso showed higher temperature sensitivity. Annual Rs was higher in Moso (20.8 Mg C ha-1 yr-1) than Madake (13.4 Mg C ha-1 yr-1), driven by greater Rh_SOM. These results highlight high Rh in the two types of bamboo stands suggest bamboo forests cannot always carbon sink.
著者氏名	○Si Ho Han1 ・ Hayato Abe1 ・ Dongchuan Fu1 ・ Marly Orrego Morales2 ・ Tomonori Kume1
著者所属	1Kasuya Research Forest, Kyushu University ・ 2Ecological Plant Nutrition, University of Kassel
キーワード	Satoyama, Unmanaged forest, Soil respiration
Key word	Satoyama, Unmanaged forest, Soil respiration