マングローブ水域の炭素収支に及ぼすガス交換機能の定量化

寺田 一美, 鯉渕 幸生, 常田 岳志, 磯部 雅彦

doi:10.2208/proce1989.55.1186

マングローブ水域の炭素収支に及ぼすガス交換機能の定量化

DOI

寺田一美

東京大学大学院新領域創成科学研究科社会文化環境学専攻
鯉渕幸生

東京大学新領域創成科学研究科社会文化環境学専攻
常田岳志

日本学術振興会 (独法) 農業環境技術研究所
磯部雅彦

東京大学新領域創成科学研究科社会文化環境学専攻

書誌事項

タイトル別名

Evaluation of gas emission effect on the carbon budget in a mangrove estuary

抄録

Nutrient cycling and CH₄ and CO₂ gas fluxes have been measured over tidal cycles in Fukido mangrove creek. Concentrations of total organic carbon (TOC) in the water increased in fine days and decreased in rainy days. Continuous measurements of gas fluxes showed that the CH₄ and CO₂ emissions from the water were accelerated due to the drop in hydrostatic pressure during the falling tide. The magnitude of total carbon gas fluxes was about-50% of the carbon accumulation in the creek. Estimation of net carbon cycling in Fukido mangrove estuary including carbon gas emission indicated that the estuary functioned as sinks for carbon.