Physiology of Woody Plants, Fourth Edition has been fully revised and updated to include the significant progress that has been made in multiple fields of tree physiology, including woody plant responses to globally changing environments, role of woody plants in biosphere-atmosphere interactions, and generalized trait-function relationship, including the multiple specialized and insightful contributions on individual facets of tree functioning and rich genetic information that has become available since the publication of the third edition. The genome of P. trichocarpa has been re-sequenced ten times to assure the highest quality, and genomic sequences have become available for 38 woody species. Armed with this new knowledge, novel insight into functioning of multiple physiological processes in woody plants has been achieved and is presented here. The fourth edition includes both the classical concepts and recent developments in the field of tree physiology and addresses a broad audience interested in gaining a basic understanding of woody plant functioning as well as those willing to refresh their knowledge of developments at the forefront of tree physiology. Providing a basic interdisciplinary understanding of the controls of climatic and biotic factors responsible for tree growth in current and future climates Physiology of Woody Plants is appropriate for undergraduate and graduate students, as well as as a reference source for practitioners and researchers seeking to learn about different aspects of tree functioning.