講演詳細

造林部門[Silviculture]

日付	2026年3月17日
開始時刻	ポスター発表
会場名	多目的ホール
講演番号	PE-6
発表題目	The effects of natural regeneration of Mallotus japonicus on the composition of forest soil carbon pool The effects of natural regeneration of Mallotus japonicus on the composition of forest soil carbon pool
所属	東京農工大学
要旨本文	This study examined soil carbon pool characteristics in a naturally regenerated forest dominated by Mallotus japonicus (Akamegashiwa) in Akiruno City, Tokyo, which developed 27 years after clear-cutting of the coniferous plantation. Akamegashiwa is rich in polyphenols (PP), so we hypothesized that PP binds to proteins and heavy metals, thereby affecting soil carbon accumulation . Four 10 m × 10 m plots were established along a slope gradient, with selective thinning applied to two upper-slope plots in 2009. Soil properties and carbon composition were analyzed in 2026. Surface soils exhibited higher soil moisture, organic carbon, total nitrogen, and dissolved organic carbon compared with subsurface soils, whereas Fe/Al-associated organic carbon (Fe/Al-OC) was greater in subsurface soils. Selective thinning increased Fe/Al-OC in surface soils but reduced microbial biomass carbon in subsurface soils.
著者氏名	○Wenhao Li1 ・ Hiroto Toda2 ・ Dongsu Choi2 ・ Yuken Hatori3 ・ Akika Hoshino3
著者所属	1Tokyo University of Agriculture and Technology ・ 2Tokyo University of Agriculture and Technology ・ 3Tokyo University of Agriculture and Technology
キーワード	Mineral-associated organic matter, Fast growing pioneer tree, Soil carbon stability
Key word	Mineral-associated organic matter, Fast growing pioneer tree, Soil carbon stability