Table 3. 4. Influence of forestry programs on private forest management Forestry program General conclusion Selected citations Planting Harvesting Knowledge of cost- Positive Generally positive, Hyberg and share pro ograms not conclusive Holthausen(1989) oyer(198 Zhang and Flick (2001) Megalos(2000) Hardie and Parks (1991) Kdp山Pm Po SitIve Nyberg and Holthausen(1989) Royer(1987) Zhang and Flick (2001) Hardie and Parks (1991) Regulation Negative No studies Zhang and Flick (2001), Boyd and Hyde(1989)