part Section 1: The Extent, General Characteristics, and Carbon Dynamics of U.S. Forest Soils -- chapter 1 Introduction and General Description of U.S. Forests -- chapter 2 Current and Historical Trends in Use, Management, and Disturbance of U.S. Forestlands -- chapter 3 Carbon Trends in U.S. Forestlands: A Context for the Role of Soils in Forest Carbon Sequestration -- chapter 4 Quantifying the Organic Carbon Held in Forested Soils of the United States and Puerto Rico* -- chapter 5 Techniques to Measure and Strategies to Monitor Forest Soil Carbon -- part Section 2: Soil Processes and Carbon Dynamics -- chapter 6 Carbon Cycling in Forest Ecosystems with an Emphasis on Belowground Processes -- chapter 7 Forest Soil Ecology and Soil Organic Carbon -- chapter 8 Global Change and Forest Soils -- chapter 9 Processes Affecting Carbon Storage in the Forest Floor and in Downed Woody Debris -- chapter 10 Impacts of Natural Disturbance on Soil Carbon Dynamics in Forest Ecosystems -- part Section 3: Management Impacts on U.S. Forest Soils -- chapter 11 Soil Erosion in Forest Ecosystems and Carbon Dynamics -- chapter 12 Impact of Soil Restoration, Management, and Land-Use History on Forest-Soil Carbon -- chapter 13 Fire and Fire-Suppression Impacts on Forest-Soil Carbon -- chapter 14 Soil Carbon Sequestration and Forest Management: Challenges and Opportunities -- chapter 15 Management Impact on Compaction in Forest Soils -- part Section 4: Specific Forest Ecosystems -- chapter 16 Soil Carbon in Permafrost-Dominated Boreal Forests -- chapter 17 Soil Carbon Distribution in High-Elevation Forests of the United States -- chapter 18 Soil Carbon in Arid and Semiarid Forest Ecosystems -- chapter 19 Carbon Cycling in Wetland Forest Soils -- chapter 20 Carbon Storage in North American Agroforestry Systems -- chapter 21 Soil Carbon in Urban Forest Ecosystems -- chapter 22 Soil Organic Carbon in Tropical Forests of the United States of America -- part Section 5: Synthesis and Policy Implications -- chapter 23 The Potential of U.S. Forest Soils to Sequester Carbon -- chapter 24 Economic Analysis of Soil Carbon in Afforestation and Forest Management Decisions -- chapter 25 Research and Development Priorities for Carbon Sequestration in Forest Soils.