Agriculture Reference
In-Depth Information
13
CHAPTER
The Current French Approach to a Soilscapes
Typology
Marcel Jamagne and Dominique King
CONTENTS
Abstract ..........................................................................................................................................158
Introduction ....................................................................................................................................158
Short Review of the Concepts of Soilscape and Soil-systems .....................................................159
Development in Typologies and Soil Mapping .............................................................................160
Cartography and ClassiÝcation ............................................................................................160
Current French Ideas on Spatial Analysis in Pedology ................................................................161
The ÑPedological CoverÒ or ÑSoil CoverÒ...........................................................................161
Characterization and Arrangement of Soils ..................................................................................162
The Different Levels of Soils Organization.........................................................................162
Subdivision or Partitioning of the Soil Cover .....................................................................163
Soilscapes, Soil Sequences: Necessity for a ClassiÝcation.................................................165
Spatial Scale .............................................................................................................165
Interarrangement of Soils .........................................................................................165
Differentiation Factors..............................................................................................165
Relationships.............................................................................................................165
Soil-Systems...................................................................................................................................166
Soil-systems and Soilscapes in France ................................................................................166
Examples of Soil-systems in France....................................................................................167
Soils of the Paris Basin ........................................................................................................168
Soils of Loamy Landscapes .....................................................................................168
Soils of Calcareous Landscapes...............................................................................168
Example from a Hilly Loessic Region of the Paris Basin ......................................168
Soils on the Detritic Formations of the Centre Region.......................................................170
Example from a Depressed Area on a Detritic Cover in the Central Region ........170
Soils of the Massif Vosgien..................................................................................................172
Example from a Medium Mountain Region of the Massif Vosgien .......................172
Possibilities of Generalizing the Approach..........................................................................172
Conclusion......................................................................................................................................174
Acknowledgments ..........................................................................................................................174
References ......................................................................................................................................176
