Soil Biology Primer
Author :
Publisher :
Page : 56 pages
File Size : 15,51 MB
Release : 1999
Category : Soil animals
ISBN :
Author :
Publisher :
Page : 56 pages
File Size : 15,51 MB
Release : 1999
Category : Soil animals
ISBN :
Author : United States. Soil Conservation Service
Publisher :
Page : 16 pages
File Size : 27,2 MB
Release : 1975
Category : Soil surveys
ISBN :
Author :
Publisher :
Page : 748 pages
File Size : 18,88 MB
Release : 1917
Category : Agricultural experiment stations
ISBN :
Author : Douglas Helms
Publisher : John Wiley & Sons
Page : 331 pages
File Size : 26,65 MB
Release : 2008-04-15
Category : Technology & Engineering
ISBN : 0470376732
Profiles in the History of the U.S. Soil Survey offers a broad-ranging collection of essays chronicling the development of the U.S. Soil Survey and its influence on the history of soil survey as a scientific discipline that focuses on mapping, analysis, and description of soils. Appraises the influences of key individuals and institutions on the establishment of federal support for and coordination of U.S. soil surveys. Provides an account of life in the field, detailing experience shared by many soil scientists and survey processionals. Reviews the opening of careers in soil survey to women and African-Americans. Relates aspects of the utility of the soil survey to other federal services, to other fields of research, and to land-use planning. Discusses the future of the U.S. Soil Survey and the new directions both the survey and its uses will take. Soil scientists and other soil survey professionals will find this collection valuable both for the new research it provides and for the memories it preserves of life and work in the field and laboratory. Historians will increasingly turn their attention to this crucial earth science as the intriguing connections between soils, the environment, and human history become more apparent. Teachers, students, and agriculturalists will also appreciate this detailed account of the Soil Survey.
Author : Leroy E. Werchan
Publisher :
Page : 236 pages
File Size : 46,58 MB
Release : 1974
Category : Soil surveys
ISBN :
Author : Food and Agriculture Organization of the United Nations
Publisher : Food & Agriculture Org.
Page : 116 pages
File Size : 11,29 MB
Release : 2006
Category : Technology & Engineering
ISBN : 9789251055212
Soils are affected by human activities, such as industrial, municipal and agriculture, that often result in soil degradation and loss. In order to prevent soil degradation and to rehabilitate the potentials of degraded soils, reliable soil data are the most important prerequisites for the design of appropriate land-use systems and soil management practices as well as for a better understanding of the environment. The availability of reliable information on soil morphology and other characteristics obtained through examination and description of the soil in the field is essential, and the use of a common language is of prime importance. These guidelines, based on the latest internationally accepted systems and classifications, provide a complete procedure for soil description and for collecting field data. To help beginners, some explanatory notes are included as well as keys based on simple test and observations.--Publisher's description.
Author : Gordon Leland Huntington
Publisher :
Page : 468 pages
File Size : 26,88 MB
Release : 1971
Category : Geology
ISBN :
Author : Usda
Publisher :
Page : 0 pages
File Size : 44,83 MB
Release : 2009
Category : Soil survey manual
ISBN : 9788172336004
This book, specially prepared for soil scientistsand engineers, offers comprehensivecoverage of basic soil concepts, systematics,mapping and examination procedures forsoils. The Manual is universally useful andis the primary reference on principles andtechnical detail for local, State and Federalcontributions to authorized soil surveys.Soil scientists concerned with soil surveysin other countries have used it as well.Teachers have used it both as a text and as areference for students.
Author : Iowa Agriculture and Home Economics Experiment Station
Publisher :
Page : 1106 pages
File Size : 32,87 MB
Release : 1921
Category : Soils
ISBN :
Author : Alfred E. Hartemink
Publisher : Springer Science & Business Media
Page : 448 pages
File Size : 29,49 MB
Release : 2008-07-11
Category : Nature
ISBN : 1402085923
Signi?cant technological advances have been few and far between in the past approximately one hundred years of soil survey activities. Perhaps one of the most innovative techniques in the history of soil survey was the introduction of aerial photographs as base maps for ?eld mapping, which replaced the conventional base map laboriously prepared by planetable and alidade. Such a relatively simple idea by today’s standards revolutionized soil surveys by vastly increasing the accuracy and ef?ciently. Yet, even this innovative approach did not gain universal acceptance immediately and was hampered by a lack of aerial coverage of the world, funds to cover the costs, and in some cases a reluctance by some soil mappers and cartog- phers to change. Digital Soil Mapping (DSM), which is already being used and tested by groups of dedicated and innovative pedologists, is perhaps the next great advancement in delivering soil survey information. However, like many new technologies, it too has yet to gain universal acceptance and is hampered by ignorance on the part of some pedologists and other scientists. DSM is a spatial soil information system created by numerical models that - count for the spatial and temporal variations of soil properties based on soil - formation and related environmental variables (Lagacheric and McBratney, 2007).