World Reference Base for Soil Resources—Its fourth edition and its history

Classification of Urban and Industrial Soils in the World Reference Base for Soil Resources

Background, Aims, and Scope. Historically, built areas were ignored in soil mapping and in studies of soil formation and behaviour. It is now recognized that these areas, and therefore their soils, are of prime importance to human populations. Another trend is the large increase in reclaimed lands and new uses for old industrial areas. In several countries there are active projects to map such ...

Revisiting the definitions of gypsic and petrogypsic horizons in Soil Taxonomy and World Reference Base for Soil Resources

Gypsic and petrogypsic horizons occur in large areas of arid and semi-arid regions of the world. The occurrence of gypsum in soils is considered a key feature by most soil classification and mapping systems, that have coined specific names for these soils and horizons. However, the current methodology for description and definition of gypsic and petrogypsic horizons in the two most popular soil...

Proposal for a new reference group for the World Reference Base for Soil Resources (WRB) 2006: the Technosols

This document proposes changes to the World Reference Base for Soil Resources (WRB) to better acommodate soils dominated by technic material. It is the second draft, aiming at the revision of the WRB to be submitted at the 2006 International Union of Soil Sciences (IUSS) meetings. Three new definitions are proposed: – Artifacts are defined as solid or liquid material created by humans as part o...

Classification of urban & industrial soils in the World Reference Base for Soil Resources: Working Document

Genomes 4. Fourth edition

With high-throughput sequencing, transcriptomics, and proteomics no longer in their “infancy” as described in the preface by author T.A. Brown, Genomes 4 offers an expansive review on a broad spectrum of topics in genetics ranging from the central dogma of genes coding for proteins, to the fine technical details of genome mapping. This edition retains the four-part organization from the previou...