A forest ecosystem is a natural unit that consists of diverse species of plants, animals and microorganisms, functioning in close association with the abiotic factors of the environment. The study of forest ecosystems falls under forest ecology. It also studies all aspects of forestry and silviculture. Sustainability of forest ecosystems is approached from multiple aspects of forest resource extent, biological diversity, forest health, productivity, protection, socio-economic function and policy framework. This book contains some path-breaking studies in the field of forest sustainability. It elucidates the concepts and innovative models around prospective developments with respect to the sustainability of forest ecosystems. Scientists and students actively engaged in this field will find this book full of crucial and unexplored concepts.