The Potential of U.S. Forest Soils to Sequester Carbon and Mitigate the Greenhouse Effect

John M. Kimble, Ph.D., is a research soil scientist at the USDA Natural Resources Conservation Service, National Soil Survey Center, in Lincoln, Nebraska, where he been for the last 21 years. Previously he was a field soil scientist in Wyoming for 3 years and an area soil scientist in California for three years. He has received the International Soil Science Award from the Soil Science Society of America. While in Lincoln, he worked on a U.S. Agency for International Development Project for 11 years, helping developing countries with their soil resources, and he remains active in international activities. For the last ten years he has focused more on global climate change and the role soils can play in this area. His scientific publications deal with topics related to soil classification, soil management, global climate change, and sustainable development. He has worked in many different ecoregions, from the Antarctic to the Arctic and all points in between. With the other editors of this book, he has led the efforts to increase the overall knowledge of soils and their relationship to global climate change. He has collaborated with Dr. Rattan Lal, Dr. Ronald Follett, and others to produce 11 books related to the role of soils in global climate change. Linda S. Heath, Ph.D. is a research forester and project leader with the USDA Forest Service, Northeastern Research Station, in Durham, New Hampshire. For the past 10 years, she has focused on modeling carbon storage and flux of forest ecosystems of the United States, including carbon in harvested wood, and uncertainties of the system. Her estimates of forest carbon are used by the U.S. government in reporting forest carbon sinks, including forest-soil carbon, to the United Nations Framework Convention on Climate Change, and by the U.S. Environmental Protection Agency in its annual inventory of U.S. greenhouse-gas emissions and sinks. As project leader, she supervises scientists conducting research in quanti