Dr. Rattan Lal is a Professor of Soil Science in the School of Natural Resources at The Ohio State University. Dr. John M. Kimble is a Research Soil Scientist at the USDA Natural Resources Conservation Service National Soil Survey Laboratory in Lincoln, Nebraska. Dr. Ronald F. Follett s Supervisory Soil Scientist, USDA-ARS, Soil Plant Nutrient Research Unit, Fort Collins, CO. He previously served 10 years as a National Program Leader with ARS headquarters in Beltsville, MD. Dr. Bobby A. Stewart is a Distinguished Professor of Soil Science, and Director of the Dryland Agriculture Institute at West Texas A&M University.

• Preface SOIL MANAGEMENT FOR REGULA TING C POOL S Chapter 1. Land Use and Soil C Pools in Terrestrial Ecosystems Chapter 2. Soil Organic Carbon Dynamics in Native and Cultivated Ecosystems of South America Chapter 3. Soil Carbon Dynamics in Different Cropping Systems in Principal Ecoregions of Asia Chapter 4. No-Tillage Production Agriculture and Carbon Sequestration in a Typic Fragiudalf Soil of Northeastern Ohio Chapter 5. Long-Term Effects of Subsurface Drainage on Soil Organic Carbon Content and Infiltration in the Surface Horizons of a Lakebed Soil in Northwest Ohio Chapter 6. Effects of Tillage on Profile Soil Carbon Distribution in the Northern Great Plains of the U.S. Chapter 7. Determining Carbon Dynamics under No-Till, Ridge-Till, Chisel, and Moldboard Tillage Systems within a Corn and Soybean Cropping Sequence Chapter 8. Tillage Methods and Carbon Dioxide Loss: Fall Versus Spring Tillage Chapter 9. Long-Term Tillage Effects on Soil Organic Carbon Distribution in Aggregates and Primary Particle Fractions of Two Ohio Soils Chapter 10. The Impact of Soil Conservation Policies on Carbon Sequestration in Agricultural Soils of the Central United States Chapter 11. Opportunities and Limitations for C Sequestration in European Agricultural Soils Through Changes in Management Chapter 12. Carbon Sequestration and Organic Resource Management in African Smallholder Agriculture CROP MANAGEMENT FOR REGULA TING C POOLS Chapter 13. Soil Carbon Dynamics in Relation to Soil Surface Management and Cropping Systems in Australian Agroecosystems Chapter 14. Long-Term Effects of Crop Rotation, Cultivation Practices, and Fertilizers on Carbon Sequestration in Soils in Norway Chapter 15. Crop Management Effects on Organic Carbon in Semi-Arid Pacific Northwest Soils Chapter 16. Aerenchyma, Acid Tolerance, and Associative N Fixation Enhance Carbon Sequestration in Soil Chapter 17. Carbon Storage in Soils under Continuous Cereal Grain Cropping: N Fertilizer and Straw Chapter 18. Soil Carbon Dynamics in Relation to Cropping Systems in Principal Eco regions of Eastern Europe, with Particular Regard to Hungarian Experiences Chapter 19. Changes in Organic Carbon in Long-Term Rotation and Tillage Trials in Northern Syria Chapter 20. Effect of Different Management Systems on Carbon and Nitrogen Dynamics of Various Soils CRP AND C SEQUESTRATION Chapter 21. CRP and Microbial Biomass Dynamics in Temperate Climates Chapter 22. Enhancing Carbon Sequestration in CRP-Managed Land PASTURES, GRASSLANDS, AND FORESTS Chapter 23. Forested Soil Carbon Storage in Landscapes of the Northern Great Lakes Region Chapter 24. Effects of Harvesting Intensity on Forest Productivity and Soil Carbon Storage in a Mixed Oak Forest Chapter 25. Forages and Row Cropping Effects on Soil Organic Carbon and Nitrogen Chapter 26. Effect of Defoliation of Medic Pastures on Below-Ground Carbon Allocation and Root Production Chapter 27. Soil Comparative Evolution under Grasslands and Woodlands in the Forest Zone of Russia Chapter 28. Management of Tropical Pastures in Acid-Soil Savannas of South America for Carbon Sequestration in the Soil Chapter 29. Carbon Storage in Grassland Soils as Related to N and S Fertilizers CHALLENGES OF C SEQUESTRATION IN SOILS Chapter 31. Need for Research and Need for Action Index