AeroBiology Agriculture BioTechnology Parasitology BioMechanics Plant Biology Structural Biology AstroBiology BioEngineering Botany Virology Mycology Evolutionary Biology Soil Biology BioInformatics BioGeography Cell Biology Plant Pathology BioMedical Research Ornithology Developmental Biology Zoology Entomology Molecular Biology Mammalogy Bacteriology Cytology Ecology
Land Degradation and Desertification
This book is organized into two sections. The first section covers three major aspects, viz., an understanding of patterns of land degradation and desertification for developing mitigation strategies, land-atmosphere interaction from response of land cover to climate change effects of Karst rocky desertification. The last section dwells on the relationship between soil degradation and crop production and an examination on how land degradation impacts the quality of soil in communal rangelands.
Author(s): Abiud Kaswamila
NA Pages 
This PDF covers the following topics related to Soil Biology : The Soil Food Web, the Food Web & Soil Health, Bacteria, Soil Fungi, Soil Protozoa, Nematodes, Arthropods, Earthworms.
Author(s): Elaine R. Ingham
34 Pages
In the first section of this book on soil erosion, an introduction to the soil erosion problem is presented. In the first part of the second section, rainfall erosivity is estimated on the basis of pluviograph records and cumulative rainfall depths by means of empirical equations and machine learning methods. In the second part of the second section, a physically-based, hydrodynamic, finite element model is described for the computation of surface runoff and channel flows.
Author(s): Vlassios Hrissanthou
NA Pages
The purpose of this web resource is to provide fundamental concepts for managing nutrients in tropical soils and container crop production. Topics covered includes: Soil composition, Soil profile Factors that cause differences in soil behavior and performance, Goals of Modern Nutrient Management, Soil-Nutrient Relationships, Soil Acidity and Liming, Essential Nutrients, Soil Fertility Evaluation, Fertilizer Material, Fertilizer Placement.
Author(s): The University of Hawai
NA Pages
This class presents the application of principles of soil mechanics. It considers the following topics: the origin and nature of soils; soil classification; the effective stress principle; hydraulic conductivity; stress-strain-strength behavior of cohesionless and cohesive soils and application to lateral earth stresses; bearing capacity and slope stability; consolidation theory and settlement analysis; and laboratory and field methods for evaluation of soil properties in design practice.
Author(s): Prof. Charles Ladd and Dr. Lucy C. Jen
NA Pages
This book explains the following topics: Soil Physics - Solids, Water, Heat, Soil aeration, solute transportation, Effects of cattle grazing on soils in coniferous forests, Soil Chemistry: Ion adsorption and exchange, Soil organic matter, Soil Biology - Soil organisms, Physiology and environment of soil organisms, Soil Fertility - Soil as a source of plant nutrients and Nutrient cycles.
Author(s): The University of British Columbia
NA Pages
Soil Biology and Land Management (PDF 20P)
This note covers the following topics: the goal of soil biology management, why should land managers understand soil biology?, the underground community, what controls soil biology?, general management strategies, considerations for specific land uses, cropland, forestland, rangeland, assessment and monitoring.
Author(s): NA
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