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Status of the CEAP National Assessment. Robert Kellogg Jerry Lemunyon Natural Resources Conservation Service, USDA. The National Assessment. Purpose : Quantify environmental effects and benefits of conservation practices for national and regional reporting Cropland Wetlands Wildlife - PowerPoint PPT Presentation
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Status of the CEAP National Assessment
Robert KelloggJerry Lemunyon
Natural Resources Conservation Service, USDA
The National Assessment
Purpose: Quantify environmental effects andand benefits of conservation practices for national and regional reporting
1. Cropland2. Wetlands3. Wildlife4. Grazing Land
Goals
1. Estimate the benefits of conservation practices currently present on the landscape
2. Estimate the need for conservation practices and the benefits that could be realized under “full treatment”
3. Simulate alternative options for implementing conservation programs in the future
4. Incorporate estimates of practice benefits into the Agency’s annual Performance Reporting System
Cropland ComponentTwo Levels of Effects
Field-Level Effects (Onsite)– Productivity and sustainability Productivity and sustainability
enhancementenhancement
– Reduction of potential pollutants Reduction of potential pollutants leaving farm fieldsleaving farm fields
Off-Site Effects– Reduction in water quality impairmentReduction in water quality impairment– Reduction in air quality impairmentReduction in air quality impairment
Analytical Approach
Sampling and modeling approach – About 20,000 NRI cropland sample points and About 20,000 NRI cropland sample points and
about 12,000 NRI CRP sample points will be used about 12,000 NRI CRP sample points will be used to construct the modelto construct the model
Farmer Survey– National Agriculture Statistical Service (NASS) National Agriculture Statistical Service (NASS)
conducting voluntary farmer surveys at the 20,000 conducting voluntary farmer surveys at the 20,000 cropland sample points. cropland sample points.
Physical process model (APEX) Off-site water quality benefits
– obtained by incorporating field-level estimates into obtained by incorporating field-level estimates into a large-scale water quality model (HUMUS/SWAT).a large-scale water quality model (HUMUS/SWAT).
Modeling Strategy
1. Estimate a CEAP Baseline using farmer survey information
2. Construct an alternative scenario assuming “no practices”
Difference between these two scenarios represents the benefits of the accumulation of conservation practices currently in place.
Model Testing/Validation
Cropland Products
Preliminary reports based on first 2-years of sample data—Spring/Summer 2006
– Summary of NRI-CEAP Cropland Survey resultsSummary of NRI-CEAP Cropland Survey results– APEX model results for selected points—a micro analysisAPEX model results for selected points—a micro analysis– Onsite effects of conservation practices on cultivated croplandOnsite effects of conservation practices on cultivated cropland– Onsite effects of CRP enrollmentOnsite effects of CRP enrollment– Conservation treatment needsConservation treatment needs– APEX model testing, refinement, and validationAPEX model testing, refinement, and validation– Offsite water quality effects of conservation practicesOffsite water quality effects of conservation practices
Final reports--December, 2007– Final versions of all preliminary reportsFinal versions of all preliminary reports– Description of APEX model and history of applicationsDescription of APEX model and history of applications– Soil Quality and development of a soil quality degradation Soil Quality and development of a soil quality degradation
indicatorindicator– Synthesis with highlights from all reports and relevant findings Synthesis with highlights from all reports and relevant findings
from watershed studies from watershed studies
Wetlands Component
CEAP-WetlandsRegional Assessment Locations
Grazing Lands Component
Literature review on what is known and not known about the effects of grazing lands conservation practices
Currently establishing an interagency task force to define plan of work
Wildlife Component
Wildlife Component Approach
• Work collaboratively with others already engaged in relevant assessments
• Use existing data wherever possible
• Identify critical data gaps and take steps to fill them
• Based on regional priorities
WestWest
SoutheastSoutheast
MidwestMidwest NortheastNortheast
CEAP National Assessment Questions?
Numerous on-going and developing aspects…many more details…
www.nrcs.usda.gov/technical/nri/ceap
Robert L. Kellogg, USDA-NRCS (301) 504-2294