Predicting the location of deforestation: The role of roads and protected areas in North Thailand

Using plot level data, we estimate a bivariate probit model to explain land clearing and the siting of protected areas in North Thailand in 1986. The model suggests that protected areas (national parks and wildlife sanctuarie s together) did not reduce the likelihood of forest clearing; however, wild life sanctuaries may have reduced the probability of deforestation. Road bu ilding, by reducing impedance-weighted distance to market, has promoted cle aring, especially near the forest fringe. We simulate the impact of further road building to show where road building is likely to have greatest impac t and where it is likely to threaten protected areas.