This comprehensive text bridges the gap between pure chemistry and the complex, dynamic systems of the earth beneath our feet. Tan masterfully translates abstract chemical laws into clear, actionable insights regarding how soil forms, breathes, retains nutrients, and interacts with the biosphere. The book is uniquely celebrated for establishing an equitable focus on both the organic and inorganic components of soil. Rather than treating soil as merely a matrix of weathered minerals, Tan highlights the vital chemical roles of humic acids, complex carbohydrates, amino acids, proteins, lipids, and even nucleic acids like DNA. By treating soil as a living, three-phase system composed of gas, liquid, and solid components, the text elevates our understanding of nutrient cycling, plant nutrition, and ecological health. Principles of Soil Chemistry distinguishes itself from traditional physical chemistry or geochemistry texts by keeping its focus squarely on the soil-plant-atmosphere continuum. For upper-level undergraduate students, graduate researchers, and environmental professionals, the book provides the definitive scientific foundation needed to tackle 21st-century challenges. Whether diagnosing organic and inorganic soil contamination, mitigating agricultural nutrient runoff, assessing potential ecological health risks, or practicing restorative carbon farming, this classic book remains an indispensable manual for understanding the chemistry that feeds our world.
Roberto Bianchi is a distinguished researcher and academic with over two decades of expertise in environmental and agricultural sciences. He holds a Ph.D. in Soil and Water Science from the University of California, Berkeley, where his groundbreaking research focused on mineral-organic matter interactions and chemical kinetics in soil ecosystems. Prior to his doctoral studies, Dr. Bianchi earned his M.S. in Agronomy and Environmental Chemistry from the University of Bologna, graduating with top honors. His academic foundation is built upon a B.S. in Chemistry, which provides him with a uniquely rigorous, molecular-level perspective on complex soil processes. Throughout his illustrious career, Dr. Bianchi has served as a senior researcher at the International Centre for Soil Research and has held professorships at leading agricultural universities. He has authored more than 50 peer-reviewed papers in top-tier journals and serves on the editorial boards of several international environmental science publications.
Preface Chapter 1. Soil Chemistry Fundamentals Soil Chemistry Studies Chemical Interactions in Ground Redox Reactions Drive Electron Transfer Processes Complexation Forms Stable Metal-Organic Associations Precipitation and Dissolution Control Solid Phases Soil Colloids Dominate Chemical Reactivity Acid Sulfate Soils Present Severe Challenges Heavy Metals Contaminate Soils Organic Contaminants Interact with Soil Components Potassium Dynamics in Soil Micronutrients Required in Small Amounts Cation Exchange Reactions Balance Nutrients Environmental Soil Chemistry Applications Chapter 2. Soil Components Overview Soil Minerals Form the Inorganic Foundation of Soil Clay Minerals Exhibit High Surface Area and Reactivity Cation Exchange Capacity Measures Nutrient Retention Adsorption-Desorption Processes Retain and Release Ions Nutrient Cycling Maintains Soil Fertility through Time Organic Amendments Build Soil Organic Matter Contaminant Behavior in Soil Depends on Chemical Speciation Soil Chemical Analysis Supports Research and Management Chapter 3. Soil Colloids Properties Definition and Fundamental Nature of Soil Colloids Colloid Flocculation and Dispersion Phenomena Analytical Methods for Colloid Characterization Environmental Significance of Soil Colloids Chapter 4. Ion Exchange Capacity Ion Exchange Capacity in Soil Chemistry Base Saturation and Soil Fertility Relationships Temperature Effects on Ion Exchange Equilibria Role of Organic Matter in Ion Exchange Ion Exchange in Relation to Plant Nutrition Modeling Ion Exchange in Soil Systems Chapter 5. Soil pH and Acidity Soil pH Definition and Fundamental Concepts Buffering Capacity and Resistance to pH Change Plant Adaptation to Acid Soil Conditions Interpretation of Soil Test Results for pH Global Distribution of Acid Soils Chapter 6. Redox Processes in Soil Fundamental Concepts of Oxidation and Reduction in Soils Oxygen as Primary Electron Acceptor in Aerobic Soils Methane Production in Highly Reduced Soils Seasonal and Temporal Dynamics of Soil Redox Redox Interfaces and their Biogeochemical Significance Redox Monitoring Techniques and Methodologies Redox Effects on Soil Microbial Community Structure Redox Processes and Soil Biodiversity Redox Processes and Soil Remediation Technologies Redox Processes in Soil-Atmosphere Gas Exchange Chapter 7. Nutrient Cycling Mechanisms Carbon Cycling Forms the Foundation for All Nutrient Transformations in Soil Phosphorus Cycling Differs Fundamentally from Nitrogen through Lack of Volatile Forms Soil Organic Matter Functions as the Central Hub for Nutrient Cycling Processes Microbial Biomass Serves as Both Catalyst and Reservoir in Nutrient Cycles Mycorrhizal Fungi Extend Plant Access to Soil Nutrients through Symbiotic Associations Nitrification Converts Ammonium to Nitrate through Microbial Oxidation Ammonia Volatilization Causes Nitrogen Loss from Surface-AppliedUrea and Manures Anion Exchange Capa
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