Juan-Jose Ibanez Marti Editor

Pavel Krasilnikov is a Professor at the Faculty of Sciences of National Autonomous University of Mexico (UNAM), and is the Head of the Laboratory of Soil Geography and Ecology, Institute of Biology KarRC RAS, Petrozavodsk, Russia.

Juan-Jose Ibanez Marti is a Senior Researcher at Centro de Investigaciones sobre Desertificacion, CIDE (CSIC-UV, Valencia, Spain) and also works at E.P.S. Area de Ciencias del Suelo y Quimica Agricola, University of Burgos, Spain.

Richard W. Arnold has taught at University Guelph, Ontario (1963-1966), and Cornell University (1966-1980), and worked at USDA -NRCS (Washington DC) from 1980-2000 as Director of Soil Survey. He is now retired.

Serghei Shoba is the Dean of the Faculty of Soil Sciences of Lomonosov University, the President of Dokuchaev's (Russian) Soil Science Society, and Editor-in-Chief of the journal 'Eurasian Soil Science'.

Additional Contributors: Chapter 9 written together with Dr. P. Schad Chapter 16 with Professor E. Micheli Chapter 26 with Dr. A. Hernandez Jimenez Part III co-written by J. Tabor