|Title||Supplement to the Desert Project Soil Monograph, Volume III|
|Year of Publication||2003|
|Authors||Gile L.H, Ahrens R.J|
|Secondary Authors||Anderson S.P|
|Keywords||book, books, chapter, chapters, Desert Project, geomorphology, Desert Project, soil, geomorphology, Desert Project, photography, aerial, photography, repeat, photography, time sequence, report, reports, soil characteristics, Desert Project, soil chemistry, Desert Project, soil formation, soil mapping, soil properties, Desert Project, soil survey, Desert Project, soil, argillic horizon, soil, aridisols, soil, boundaries, soil, calcareous, soil, calcic horizon, soil, calcite, soil, calcium carbonate horizon, soil, carbonate, soil, charcoal horizons, soil, chronosequence, soil, classification, soil, description, soil, Desert Project, soil, geomorphic relationships, soil, landscape, soil, map-unit boundaries, soil, Paleargid horizon, soil, paleosols, soil, petrocalcic horizon|
Volume III of the Supplement to the Desert Project Soil Monograph is the third in a number of volumes about soils and landscapes in the Desert Project area. Volume III consists of two chapters. The first is an update of the Desert Project soil survey, along with many illustrations of its features. Because of the high significance of carbon in studies of global change, particular attention is paid to composition of the map units with respect to both organic and carbonate carbon. This information has been used in the second chapter on areal evaluation of organic and carbonate carbon. Recent advances in color technology and computer-generated maps have been used in sections involving both general and detailed soil maps, maps of morphological and physiographic features, and maps illustrating soil-geomorphic reconstruction. In addition, color photography has been used to illustrate the effects of increasing precipitation from the arid to the semiarid zone; the effects of moisture differences resulting from surface and subsurface concentrations of moisture; sites dated by radiocarbon ages of buried charcoal; other features of the semiarid zone; and soils of Holocene scarps in high-carbonate parent materials. Land survey notes, grazing records, aerial photographs, and present conditions indicate extensive dune formation and dramatic changes in vegetation from about 1885 to 1936. Repeat photography documents major vegetation changes in the last 20 to 80 years.