CO2 transportation and utilization for photosynthesis in woody plants

2014 Fiscal Year Final Research Report

• Project/Area Number: 24580216
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Forest science
• Research Institution: Shizuoka University
• Principal Investigator: NARAMOTO Masaaki 静岡大学, (連合)農学研究科(研究院), 准教授 (10507635)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 幹呼吸 / CO2輸送 / 樹液流

Outline of Final Research Achievements

The great resistance of bark on CO2 diffusion was found from bark stripping experiments. The effect of CO2 transportation via sap flow on stem respiration without bark was found at in cutting shoot too. The most parts of transpired CO2 from the lower were fixed at petiole or current year twig from isotope tracer experiments with 13C.
We measured the properties of stem respiration for 37 tree species. The bark molophological differences might affect CO2 diffusion from bark surface. Stem respiration rate were measured at different height for mature trees of Fagus crenata. Stem respiration rate at about 15m of height was higher than that at the lower stem. The effects of CO2 transportation via sap flow on stem respiration changed depending on height. The results suggested that the CO2 transportation affect negatively via carrying away of CO2 at breast height.

Free Research Field

森林科学