Submerged soils and the wetlands they support are of huge practical importance: in global element cycles, as centres of biodiversity, in global food production. They are also uniquely interesting scientifically because of their peculiar biogeochemistry and the adaptations of plants and microbes to it.
This book describes the physical, chemical and biological processes operating in submerged soils and governing their properties. It describes the transport processes controlling the fluxes of gases and solutes through the soil; the interchange of solutes between solid, liquid and gas phases; reduction and oxidation processes; biological processes in the soil and overlying water; and processes in the roots and rhizospheres of wetland plants. The dynamics of nutrients, toxins, pollutants and trace gases are then discussed in terms of these processes and in relation to wetland productivity and global element cycles.
Written by a renowned expert in the field, this work will be invaluable to earth, environmental and agricultural scientists concerned with natural or man-made wetlands, and to advanced undergraduate and graduate studen ts of these topics.
Rezensionen / Stimmen
"Overall, this volume will make a nice reference addition to those scientists interested in biogeochemical processes in anaerobic environments, especially rice lands." (Annals of Botany, 1 October 2005)
"...clearly and logically set out...simple and to the point...most impressive." (European Journal of Soil Science, No.56, April 2005)
Auflage
Sprache
Verlagsort
Zielgruppe
Produkt-Hinweis
Fadenheftung
Gewebe-Einband
Maße
Höhe: 238 mm
Breite: 156 mm
Dicke: 22 mm
Gewicht
ISBN-13
978-0-470-86301-5 (9780470863015)
Schweitzer Klassifikation
Guy Kirk is the author of The Biogeochemistry of Submerged Soils, published by Wiley.
Autor*in
Cranfield University, UK
Preface.
Acknowledgements.
1. Introduction.
1.1 Global Extent of Submerged Soils and Wetlands.
1.2 Biogeochemical Characteristics.
1.3 Types of Submerged Soil.
2. Transport Processes in Submerged Soils.
2.1 Mass Flow.
2.2 Diffusion.
2.3 Ebullition.
2.4 Mixing by Soil Animals.
3. Interchange of Solutes between Solid, Liquid and Gas Phases.
A. WATER.
3.1 Composition of the Water.
3.2 pH Buffer Capacity.
3.3 Equilibrium with the Gas Phase.
3.4 Gas Transport Across the Air-Water Interface.
B. SOIL.
3.5 The Solid Surfaces in Soils.
3.6 The Solid Surfaces in Submerged Soils.
3.7 Solid-Solution Interactions.
4. Reduction and Oxidation.
4.1 Thermodynamics and Kinetics of Redox Reactions.
4.2 Redox Conditions in Soils.
4.3 Transformations of Nutrient Elements Accompanying Changes in Redox.
4.4 Oxidation of Reduced Soil.
5. Biological Processes in the Soil and Floodwater.
5.1 Microbiological Processes.
5.2 Macrobiological Processes.
5.3 Is Biodiversity Important?
6. Processes in Roots and the Rhizosphere.
6.1 Effects of Anoxia and Anaerobicity on Plant Roots.
6.2 Architecture of Wetland Plant Root Systems.
6.3 Nutrient Absorption Properties of Wetland Plant Roots.
6.4 Root-Induced Changes in the Soil.
6.5 Consequences of Root-induced Changes.
6.6 Conclusions.
7. Nutrients, Toxins and Pollutants.
7.1 Nutrient and Acidity Balances.
7.2 Toxins.
7.3 Trace Elements.
8. Trace Gases.
8.1 Methane.
8.2 Nitrogen Oxides.
8.3 Ammonia.
8.4 Sulfur Compounds.
8.5 Carbon Sequestration.
References.
Index.
