Table 1. The in-depth interview questions.

Classification	Question Contents	Number
Personal characteristics	1. Status of person in charge2. Dependence on consultants	2
Registration	3. Motivation and expectation effectiveness	1
Performance	4. Monitoring performance experience5. Amount of support cost6. Perception of limiting factors - Complexity of certification procedure - Lack of project managers’ expertise - Lack of human resources in operating institutions - Lack of voluntary trading markets and demand 7. Understanding of other limiting factors	7
Result	8. Project continuity9. Status of carbon absorption transaction10. Improvement of Forest Carbon Offset Scheme	3