Soils as a key component of the critical zone. 5 : degradation and rehabilitation / edited by Christian Valentin.

Includes bibliographical references and index.

Cover; Half-Title Page; Title Page; Copyright Page; Contents; Foreword; 1. The State and Future of Soils; 1.1. Soils as a key component of the critical zone; 1.1.1. Definitions; 1.1.2. Soil functions and services; 1.1.3. Soil and land degradation, desertification; 1.2. The difficult assessment of the state and kinetics of soil degradation or enhancement; 1.2.1. Global assessment; 1.2.2. Forms of degradation; 1.2.3. Main factors of soil degradation; 1.2.4. What's the trend: degradation spiral or U-curve?; 1.2.5. The necessity for monitoring mechanisms

1.3. Conservation, restoration, rehabilitation and compensation1.3.1. Definitions; 1.3.2. Implementation; 1.3.3. Concept of neutrality in terms of land degradation; 1.4. Conclusions; 1.5. References; 2. Soil Surface Crusting of Soiland Water Harvesting; 2.1. Surface conditions and surface crusts; 2.2. Crust types and formation processes; 2.2.1. Structural crusts; 2.2.2. Gravel crusts; 2.2.3. Erosion crusts; 2.2.4. Depositional crusts; 2.2.5. Saline crusts and efflorescence; 2.2.6. Biological soil crusts (or Biocrusts); 2.3. Crusting factors and principles for improving aggregate stability

2.3.1. Soils2.3.2. Rain; 2.3.3. Slope; 2.3.4. Cover; 2.3.5. Agricultural practices; 2.4. Consequences of surface crusting; 2.4.1. Hydrological: Hortonian flow; 2.4.2. Ecological: example of the tiger bush; 2.4.3. Agronomic: water harvesting; 2.5. Conclusions; 2.6. References; 3. Erosion and Principles of Soil Conservation; 3.1. Definitions; 3.2. The importance of erosion; 3.2.1. On a global scale; 3.2.2. Effects of erosion; 3.3. Processes and factors; 3.3.1. Splash detachment; 3.3.2. Sheet erosion (also called inter-rill erosion); 3.3.3. Linear erosion; 3.3.4. Mass movements

3.3.5. Tillage erosion3.3.6. Wind erosion; 3.4. Erosion: a question of scale; 3.4.1. Space scales; 3.4.2. Time scales; 3.4.3. Space scales; 3.4.4. Particulate and soluble transport; 3.4.5. Aeolian dust; 3.5. Modeling; 3.5.1. Statistical approaches; 3.5.2. Physically based models; 3.5.3. Hybrid models; 3.6. Principles of soil conservation; 3.6.1. Field level: limiting detachment; 3.6.2. Catchment scale: slowing runoff and promoting deposition; 3.7. Population density, economic contexts and public policies; 3.8. Conclusions; 3.9. References; 4. Soil Acidity and Acidification; 4.1. Acidity

4.2. Definitions of acidification and its evolution4.3. Illustration: long-term theoretical evolution of the acidity of a limestone loess; 4.4. Acidifying processes; 4.5. Involvement of large biogeochemical cycles in soil acidification; 4.5.1. Nitrogen cycle; 4.5.2. Carbon cycle; 4.5.3. Absorption of cations/anions by plants; 4.5.4. Acid or alkaline deposits; 4.5.5. Other cycles: P, S, Fe, Mn; 4.6. Neutralization of acidification; 4.7. Biogeography of acidity; 4.8. Physical and biological consequences of soil acidity; 4.9. References; 5. Soil Salinization andManagement of Salty Soils

5.1. Introduction

Description based on online resource; title from digital title page (viewed on February 22, 2019).