Author(s): Takaya Kaneko; Atsuya Ikemoto; So Kazama

Linked Author(s): So Kazama, Atsuya Ikemoto

Keywords: Daptation mitigation tree cutting river flood CO2-reduction

Abstract: This study quantitatively evaluated the reduction rate of expected annual damage (adaptation) and the amount of CO2 reduction (mitigation) due to tree felling in river channels for a Class 1 water system in Japan. The mitigation effect of tree felling was calculated in terms of CO2 emissions reduction, including CO2 emissions from the transportation of trees from the tree felling point to the power generation facility. The maximum mitigation rate of flood damage by tree felling was 2.5% in the Joganji River. The CO2 emission reductions were largely divided between eastern and western Japan. This is largely dependent on the area of trees and watershed area. There were 30 water systems in which the cutting of trees in the river channel was highly effective in both adaptation and mitigation. In 19 water systems, both adaptation and mitigation were greater when downstream logging was conducted. In the middle reaches, there were 11 water systems. Logging upstream resulted in lower damage mitigation and CO2 reduction. Logging upstream may increase damage, so the selection of logging sites should be done carefully.

DOI:

Year: 2025