Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Flexible Soil Model Maps Remote Areas

24.08.2009
Soil scientists often face the dilemma of wishing to study soil in remote areas because they are ideal places to study soil formation and distribution under natural conditions, but mapping them requires a huge investment of time and resources. Computer-based models offer an efficient alternative. Researchers used ArcGIS geodatabase software to develop the Remote Area Soil Proxy (RASP) modeling technique to predict natural occurrence of soils in remote areas.

Bruce Frazier and Richard Rupp of Washington State University and Toby Rodgers and Crystal Briggs of Soil Survey conducted this work in the Pasayten River watershed in north-central Washington. Their results are reported in the summer issue of Soil Survey Horizons. Data were collected from dominant landscape facets accessible by or near trails, and soil formation was modeled using surrogates for the soil forming factors.

This technique requires an understanding of the soil forming processes occurring that the model must predict. In this case, four processes where identified as most important: podzolization (the process by which soils are depleted of bases and become acidic), andisolization (the rapid weathering of volcanic glass with formation of allophane, ferrihydrite, and imogolite), the prevention of the first two processes by erosion and unstable slopes, and continual wetness. Additional data related to vegetation, terrain attributes, hydrology, and parent materials were added to the model.

Twenty-two soil map unit complexes representing the diversity of the area were identified and found to match well with adjoining surveys using National Cooperative Soil Survey correlation procedures, reaching 75% accuracy at sampled pedon description sites within the watershed. The procedures developed in this modeling effort are new to soil survey and will benefit efforts in remote areas. Additionally, the model can be updated as new theories of soil formation are formulated, or as new data become available.

This featured article of SSH is available for free access at https://www.soils.org/publications/soil-survey-horizons/ until the next quarterly issue.

Soil Survey Horizons, https://www.soils.org/publications/soil-survey-horizons/, is a medium for expressing ideas, problems, and philosophies concerning the study of soils in the field. Articles include research updates, soil news, history of soil survey, and personal essays from the lives of soil scientists. Soil Survey Horizons is published by the Soil Science Society of America.

The Soil Science Society of America (SSSA) is a progressive, international scientific society that fosters the transfer of knowledge and practices to sustain global soils. Based in Madison, WI, and founded in 1936, SSSA is the professional home for 6,000+ members dedicated to advancing the field of soil science. It provides information about soils in relation to crop production, environmental quality, ecosystem sustainability, bioremediation, waste management, recycling, and wise land use.

SSSA supports its members by providing quality research-based publications, educational programs, certifications, and science policy initiatives via a Washington, DC, office. For more information, visit www.soils.org.

SSSA is the founding sponsor of an approximately 5,000-square foot exhibition, Dig It! The Secrets of Soil, which opened July 19, 2008 at the Smithsonian's National Museum of Natural History in Washington, DC.

Sara Uttech | Newswise Science News
Further information:
http://www.soils.org

More articles from Studies and Analyses:

nachricht Drone vs. truck deliveries: Which create less carbon pollution?
31.05.2017 | University of Washington

nachricht New study: How does Europe become a leading player for software and IT services?
03.04.2017 | Fraunhofer-Institut für System- und Innovationsforschung (ISI)

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Can we see monkeys from space? Emerging technologies to map biodiversity

An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.

Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...

Im Focus: Climate satellite: Tracking methane with robust laser technology

Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.

Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...

Im Focus: How protons move through a fuel cell

Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.

As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...

Im Focus: A unique data centre for cosmological simulations

Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.

With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...

Im Focus: Scientists develop molecular thermometer for contactless measurement using infrared light

Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine

Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Plants are networkers

19.06.2017 | Event News

Digital Survival Training for Executives

13.06.2017 | Event News

Global Learning Council Summit 2017

13.06.2017 | Event News

 
Latest News

Supersensitive through quantum entanglement

28.06.2017 | Physics and Astronomy

X-ray photoelectron spectroscopy under real ambient pressure conditions

28.06.2017 | Physics and Astronomy

Mice provide insight into genetics of autism spectrum disorders

28.06.2017 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>