Labile Organic Matter

"Because of its dynamic nature, labile organic matter is a key player in terrestrial and aquatic ecosystems. Editors Zhongqi He and Fengchang Wu include contributions from more than 30 senior researchers and innovative junior investigators from six countries. With issue-oriented comprehensive reviews and problem-solving case studies, this collection brings together soil and aquatic scientists to provide a comprehensive understanding for managing the sources and fates of labile organic matter. A timely synthesis of recent research, this collection illustrates the remarkable range of advanced techniques and approaches for labile organic matter research. This book will serve as a valuable reference for university faculty, graduate students, soil scientists, ecologists, limnologists, marine scientists, environmental scientists, agricultural engineers, and any who work with various aspects of labile organic matter in the environment."

Foreword vii Preface ix Contributors xi Part I. Characterization of Labile Organic Matter Characteristics of Dissolved Organic Carbon Revealed by Ultraviolet– Visible Absorbance and Fluorescence Spectroscopy: The Current Status and Future Exploration Mingchu Zhang and Zhongqi He 1 Determination of Soil Organic Matter Features of Extractable Fractions Using Capillary Electrophoresis: An Organic Matter Stabilization Study in a Carbon-14-Labeled Long-Term Field Experiment Michael Tatzber, Sabine Klepsch, Gerhard Soja, Thomas Reichenauer, Heide Spiegel, and Martin H. Gerzabek 23 Composition of Whole and Water-Extractable Organic Matter of Cattle Manure Affected by Management Practices Zhongqi He and Heidi M. Waldrip 41 Forms and Lability of Phosphorus in Humic and Fulvic Acids Zhongqi He, Irenus A. Tazisong, and Zachary N. Senwo 61 Structural and Functional Comparison of Mobile and Recalcitrant Humic Fractions from Agricultural Soils Zhongqi He and Mingchu Zhang 79 Part II. Functions of Labile Organic Matter Characteristics of Plant-Derived Water-Extractable Organic Matter and its Effects on Phosphorus Sorption Behavior James F. Hunt and Zhongqi He 99 Water-Extractable Organic Carbon and Nitrogen Affected by Crop Rotation and Fertilizer Management Mingchu Zhang, Zhongqi He, and Aiqin Zhao 119 Elemental Composition and Functional Groups in Soil Labile Organic Matter Fractions Irenus A. Tazisong, Zachary N. Senwo, and Zhongqi He 137 Labile Organic Matter in Soil Solution: I. Metabolites of Chemical Signaling Pathways from Plant–Microbe Interactions Carlos M. Monreal 157 Labile Organic Matter in Soil Solution: II. Separation and Identification of Metabolites from Plant–Microbial Communication in Soil Solutions of Wheat Rhizospheres Carlos M. Monreal and Morris I. Schnitzer 173 Chemical Evaluation of Soil Organic Matter Structure in Diverse Cropping Systems Bruno Henrique Martins, Michel A. Cavigelli, Jeffrey S. Buyer, Jude E. Maul, James B. Reeves III, and Ladislau Martin-Neto 195 Nonideal Interactions Between Organic Contaminants and Dissolved Organic Matter Di Zhang and Bo Pan 219 Part III. Variations of Labile Organic Matter Across Different Ecosystems Characterizing the Labile Fraction of Dissolved Organic Matter in Leaf Leachates: Methods, Indicators, Structure, and Complexity Bioavailability and Preservation of Organic Phosphorus in Freshwater Sediments and Its Role in Lake Eutrophication Yuanrong Zhu, Fengchang Wu, and Zhongqi He 275 Effect of Algal Organic Matter on Pollutant Accumulation in Reservoir Sediments of the Pearl River Delta, China Dandan Duan and Yong Ran 295 Characteristics and Functions of Labile Organic Carbon in Coastal Wetland Soils of the Mississippi River Deltaic Plain Jim J. Wang, Syam K. Dodla, and Ronald D. DeLaune 315 Sources, Early Diagenesis, and Structure of Organic Matter in the Pearl River Delta Yong Ran and Yulong Zhang 337 Comparison of Distribution of Total Organic Matter and Its Key Fractions in Coastal Lagoon Sediments from Estonia, Finland, and Sweden for Use as Healing Muds Monika Übner 369