Improvement of model estimating plant dark respiration under changing environment

2016 Fiscal Year Final Research Report

• Project/Area Number: 26550018
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Environmental dynamic analysis
• Research Institution: National Institute for Environmental Studies
• Principal Investigator: Ito Akihiko 国立研究開発法人国立環境研究所, 地球環境研究センター, 主任研究員 (70344273)
• Co-Investigator(Renkei-kenkyūsha): NOGUCHI Ko 東京薬科大学, 生命科学部応用生命科学科, 教授 (80304004)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 炭素循環 / 地球温暖化 / 植物生理生態 / 生物地球化学 / 生態系モデリング

Outline of Final Research Achievements

In this study, we aimed at developing a new scheme of plant dark respiration, which is applicable to global terrestrial carbon cycle models. We conducted a meta-analysis and tried to develop a new method of estimation of ecosystem-scale dark respiration on the basis of the metabolic scaling theory. For the improved estimation of dark respiration under changing environment, we conducted a series to sensitivity analysis with the terrestrial ecosystem model. By including acclimation-like response into the dark respiration scheme, it was implied that the interannual and seasonal changed in net ecosystem CO2 exchange can be improved in comparison with former models.

Free Research Field

物質循環モデリング