ABSTRACT
Pedogenetic Processes ...................................................................... 201 5.4 Changes in the Blockage Effect of Hydroxy-Al Polymers on the
Frayed Edge Site of Illitic Minerals during the Process of Pedogenetic Acidi…cation in Japan ...................................................................................203 5.4.1 Soils Studied .....................................................................................203 5.4.2 Soil Types and Clay Mineralogy ......................................................203 5.4.3 RIP Variation and the Sequential Transformation of HIV to
Vermiculite .......................................................................................205 5.4.4 Blockage Effect of Hydroxy-Al Polymers on the Frayed Edge
Site ....................................................................................................207
5.5 Charge Characteristics of Forest Soils Derived from Sedimentary Rocks in Japan in Relation to Pedogenetic Acidi…cation Processes ............209 5.5.1 Soil Samples .....................................................................................209 5.5.2 Analytical Methods .......................................................................... 212 5.5.3 General Charge Characteristics of the Soils ..................................... 213 5.5.4 Contribution of Each Component to the Charge Characteristics
