ABSTRACT

This profusely illustrated book gives an exhaustive account of the principal types of soils of our planet. The "progressive descent of weathering fronts" model, recognized and used by eminent international scientists is the guiding principle of choice to link the observations and to give the reader a synthetic and coherent view of the differentiati

chapter 1|4 pages

Definitions, Concepts and Tools

1.1 BASIC CONCEPTS 1.1.1 Horizons, Pedons and Profiles ƒ Definitions

chapter 2|3 pages

Factors of Pedogenesis

chapter |14 pages

ƒ Palynology

chapter 2|2 pages

3.7 Concept of Paleosols

chapter |17 pages

ƒ Characterization of humic substances

chapter 3|3 pages

2.2 Dissolution Phenomena

chapter 3|10 pages

2.3 Translocations

chapter |4 pages

ƒ Drainage conditions

chapter 3|13 pages

4.3 Chemical Dissolution

chapter 124|1 pages

1 2 4

chapter 125|1 pages

1 2 5

chapter |5 pages

ƒ Qualifiers in the WRB

chapter |2 pages

CONCLUSION

chapter |3 pages

ƒ Dismantling of the cuirass

chapter 5|9 pages

3 DURATION OF PEDOGENESIS

chapter 5|2 pages

4.3 Other Tropical Soils

chapter 6|4 pages

Vertisols

chapter |2 pages

ƒ Organic matter in Vertisols

chapter 6|3 pages

7 RETURN TO THE WEATHERING-FRONT MODEL

chapter |4 pages

REFERENCES

chapter 7|5 pages

2.4 Role of Topography

chapter |12 pages

ƒ Role of seasonal alternations

chapter 8|10 pages

Cambisols, Luvisols and Planosols

chapter |1 pages

ƒ Synthesis/discussion

chapter |1 pages

ƒ Dynamics of the profiles

chapter 8|6 pages

2.3 The Evolutionary Sequence

chapter |9 pages

ƒ Dated surfaces

chapter |7 pages

ƒ Weathering-front model

chapter |4 pages

ƒ Correlation with Soil Taxonomy

chapter |5 pages

CONCLUSION

chapter 10|4 pages

Andosols 291

chapter |5 pages

ƒ Crystallization

chapter |5 pages

ƒ Synthesis

chapter |5 pages

ƒ De-andosolization

chapter 11|7 pages

Podzolic Soils

chapter |5 pages

ƒ Role of vegetation

chapter |16 pages

ƒ Weaknesses of the model

chapter 12|6 pages

Gleysols, Stagnosols and Histosols

chapter |12 pages

ƒ Determination of redox potential

chapter |24 pages

ƒ Nitrification

chapter |4 pages

REFERENCES

chapter 13|8 pages

Saline Soils: Solonchaks and Solonetz

chapter 13|18 pages

2.3 Fossil Deposits (Evaporites)

chapter |1 pages

ƒ Defensive strategies of plants

chapter |3 pages

ƒ Reduction in yield

chapter |3 pages

ƒ Risk of increase of natural salinity

chapter |5 pages

REFERENCES

chapter 14|8 pages

Chernozems; General Conclusions