Promoting an environmental education project: the eco-picture diary in Yokohama City, Japan

Hiroshi Ito, Alan Reid

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)


In recent years, Yokohama City, Japan, has seen substantial efforts to address socio-environmental issues. One such effort is the G-30 program, which has helped reduce garbage waste production by 43 percent in 2010, since 2001. The eco-picture diary, an environmental education project, has been identified as contributing to the success of G-30. However, no research to date has examined the diary’s effect on garbage reduction, nor accounted for what the project is and how it became prevalent. Using questionnaires with citizens and interviews with other stakeholders, this case study addresses these gaps. Key findings concern how people perceived the diary to have been central to garbage reduction by citizens. The study also shows how the diary illustrates an example of backcasting, ecopedagogy, reflective learning, and place-based approaches to environmental education, as well as how uptake of the project can be explained via diffusion of innovation theory and the theory of planned behavior.

Original languageEnglish
Pages (from-to)1656-1675
Number of pages20
JournalEnvironmental Education Research
Issue number11
Publication statusPublished - 2020


  • diffusion of innovation theory
  • Environmental education
  • social marketing
  • sustainable development goals
  • theory of planned behavior

Cite this