This major work offers a detailed case study into the dynamics of forest use, degradation and loss in Northeast Luzon, Philippines. Following an interdisciplinary approach, the study charts the degradation and loss of forest cover in this area between 1950 and 1990 and relates it to the social and political context of logging, forest migration and changes in upland agriculture. This represents a major contribution to knowledge both in the field of Philippine studies and in relation to deforestation, environmental change, political ecology and development. Based on 10 years of research, five of which in the Sierra Madre region, the author introduces us to the actions, livelihood options and motives of all the principal groups of actors. Using a stimulating and fascinating balance between systematic survey data and the qualitative reporting of conversations with these key actors, this book offers a compelling insight into the long history of national, regional and local outsiders gaining access to the natural resources and lands of this last large forest frontier in the Philippines. This title falls in the category of Environmental Studies, Sociology, Anthropology, Politics, and Philippines. It is suitable for academic researchers and post-graduate students.