The benefits of agriculture's Green Revolution, characterized by high energy input, mechanization, fertilizers, pesticides and irrigation, are not available to millions in the developing world. The possible alternatives employing low energy input, smallness of scale, intensive use of labour and long term sustainability are the subject of this book.;The book includes overviews of current agricultural production systems and alternatives; demographics, mortality and population growth; soils, erosion and water availability; sustainable integrated agroforestry systems and behavioural adaptations.;It also explains why a quality environment is essential for future agricultural and economic development, proves that integrated resource management leads to sustainable and productive agriculture for development, shows that certain agroforestry techniques conserve soil, water, energy and biological resources while increasing food and fuel supplies and addresses the need for interdisciplinary and multidisciplinary research and training to implement sound resource management policies and programmes.