This presentation showed the Microsoft Access soil database that supports the new SSURGO version 2 data structure. The MS Access soil database now contains all the classic manuscript reports that can be used for the soil reports of Section II of the FOTG. States that want to migrate from FOCS soil database before SSURGO is ready can deploy the NASIS export – imported into the MS Access soil database template can send the Access database to the FO for use as the major portion of Section II of the FOTG.
Soil Data Viewer version 3.0 is schedule for release with the Customer Service Toolkit 3.0 mid-summer 2001. SDV 3.0 is designed to work with the new SSURGO data structure. SDV 3.0 has the capability to process the MS-Access soil database both in a GIS capacity (with ArcView) and a non-GIS processing of tabular reports. The current Soil Data Viewer 2.0 only works with exports created from NASIS 4.1.1. The next release Soil Data Viewer 3.0 will only work with exports created from NASIS 5.0.
The new SSURGO data structure provides the capability to merge more than one SSURGO data set into a GIS without data conflicts. This will provide users that ability to create wide-area assessments or localized soil themes that cross the boundaries of the SSURGO soil survey.
Soil Data Viewer 3.0 has much more processing power, with the ability to process complex horizon soil physical and chemical properties. User can select a soil property and the depth to process that property based on dominant soil or weighted average.
The above screen the user has selected percent clay for the dominant soil from the surface to 25 inches (50 cm).
The user can also create a tabular report for selected map units that could be included with customer map products. User can select specific map units for reporting. In the non-GIS capacity the tabular report can be used for processing dominant soil, dominant condition, weighted average, most limiting and least limiting. The same processing methods used in the GIS capacity. This provides users at a local field office that ability to process their soil data well before the local survey is certified SSURGO.
Soil Data Viewer 3.0 will also provide the user the ability to access non-technical descriptions in the soil database. The non-technical descriptions as part of Section II of the FOTG can be reported for selected map units providing a custom report to meet the customer needs.
Geophysical Methods within USDA-NRCS: Applications and Interpretations
Jim Doolittle, NRCS, NSSC, email: jdoolittle@fs.fed.us
Geophysical Program Initiative:
Regional Soil Specialists for Geophysical Investigations
New field tools are needed for a new generation of soil scientists. In recent years, three noninvasive geophysical methods, ground-penetrating radar (GPR), electromagnetic induction (EMI), and towed array resistivity units have gained acceptance and have experienced a dramatic expansion of applications within NRCS. These geophysical methods have been used to support soil, agronomic, archaeological, engineering, and geologic site assessments.
Present Disposition
National Soil Survey Center (NSSC)
Complete arrays of EMI and GPR units are maintained by the NSSC in Newtown Square, Pennsylvania. Since its inception, the NSSC has provided ground-penetrating radar and electromagnetic induction field assistance and training to states. Assignments support ongoing programs and are mostly provided at no charge to the states.
Florida
In October 1999, Florida purchased two SIR2000 radar units to replace its aging units. In addition, two 200 MHz antennas were purchased. Units are located in Sebring and Gainesville, Florida
Massachusetts
In December 2000, Massachusetts purchased a SIR2000 radar unit, a 200 MHz antenna, and computer and software to process radar data. The SIR200 system replaced an aging SIR-3 system. The unit is located in West Wareham, Massachusetts.
New York
In August 1999, the NSSC transferred a SIR-8 radar system with a 300 MHz antenna to the Soil Staff in New York. In June 2000, three GPR units were transferred from the US Geological Survey to the Soil Staff in New York. In the fall of 2000, New York purchased a 400 MHz antenna to support ongoing soil and archaeological projects. The GPR units are maintained in Staten Island and Herkimer, New York.
Illinois
With the support of a national initiative, the soil staff in Illinois purchased the Veris Technologies 3100 Soil EC Mapping System. This mobile system integrates GPS, computer-graphics, and resistivity to assess and map apparent conductivity within the upper 36 inches of the soil profile. This system will be used to map the spatial variability of soils and soil properties and to support precision agriculture initiatives. The unit is shared between the Champaign and Carbondale offices.
Other States
Several additional states have purchased EM38 or EM31 to support soil, archaeological, engineering, and ground-water investigations.
Future Geophysical Initiatives: Development of Regional Soil Specialists (Geophysical Investigations)
It is impractical to have specialists in each state. A regional approach is recommend. This approach would enable individual states to have access to geophysical tools, associated technologies, and a specialist(s). It would be more cost effective for NRCS to equip several Major Land Resource Area Offices (MO) with appropriate geophysical tools. The MO would designate soil scientist(s) to operate these tools. A regional approach would decrease unnecessary expenditures by individual states, and would improve the expertise and technological edge of NRCS. A regional approach would also increase the availability of geophysical services to states.
This project would entail the National Soil Survey Division (NSSD) equipping selected MO with appropriate geophysical tools to conduct field investigations. In return for the equipment, the MO would agree to provide a soil scientist(s) for up to twelve weeks to perform geophysical investigations within the home and adjoining states. Specialist(s) would be responsible for geophysical investigations within a restricted geographic area (home state and adjoining states). If the pilot project provides satisfactory results, the project can be repeated in additional MOs.
Share with your friends: |