Forest Development In Cold Climates

As forests decline in temperate and tropical climates, highly-developed countries and those striving for greater economic and social benefits are beginning to utilize marginal forests of high-latitude and mountainous regions for resources to satisfy human needs. The benefits of marginal forests range from purely aesthetic to providing resources for producing many goods and services demanded by a growing world population. Increased demands for forest resources and amenities and recent warming of high latitude climates have generated interest in reforestation and afforestation of marginal habitats in cold regions. Afforestation of treeless landscapes improves the environment for human habitation and provides for land use and economic prosperity. Trees are frequently planted in cold climates to rehabilitate denuded sites, for the amenity of homes and villages, and for wind shelter, recreation, agroforestry, and industrial uses. In addition, forests in cold climates reduce the albedo of the earth's surface in winter, and in summer they are small but significant long-lived sinks for atmospheric carbon dioxide. Finally, growth and reproductive success of forests at their geographic limits are sensitive indices of climatic change. As efforts to adapt forests to cold climates increase, however, new afforestation problems arise and old ones intensify. Austral, northern, and altitudinal tree limits are determined by many different factors. Current hypotheses for high-latitude tree limits are based on low growing-season temperatures that inhibit plant development and reproduction.

This report updates a review of literature about the effects of global climate change on forest plants and communities published in 1998. The focus is on changes in Ontario predicted for forest fires, insect outbreaks, disease, forest growth, species composition, harvest rates, wood supply, genetics and regeneration, and carbon-based forest management.--Includes text from document.

Written by leading international authors, this book presents a comprehensive review of forests in mountain regions, and their sustainable development. Based on a report prepared by the IUFRO Task Force in Sustainable Mountain Development, for the IUFRO Congress to be held in August 2000. The book addresses current issues and initiatives, and defines research needs. Key global issues and addressed is in general articles, while specific regional topics are described and highlighted within each chapter in shorter case studies. Case studies are drawn from all continents, examples including Mexico, Central Europe, Cameroon, Tanzania, Chile, Korea, New Zealand and many others. Contributions have been included from nearly 100 world experts, making this volume the definitive, state-of the art review of its subject.

A top priority in climate research is obtaining broad-extent and long-term data to support analyses of historical patterns and trends, and for model development and evaluation. Along with directly measured climate data from the present and recent past, it is important to obtain estimates of long past climate variations spanning multiple centuries and millennia. Dendroclimatic Studies at the North American Tree Line presents an overview of the current state of dendroclimatology, its contributions over the past few decades, and its future potential. The material included is not useful not only to those who generate tree-ring records of past climate-dendroclimatologists, but also to users of their results-climatologists, hydrologists, ecologists and archeologists. In summary, this book: Sheds light on recent and future climate trends by assessing long term past climatic variations from tree rings Is a timely coverage of a crucial topic in climate science portraying recent warming trends which are of serious concern today Features well-reputed scientists highlighting new advanced methodologies to reconstruct past climate change Models the tree growth environmental response