W.G. Kepner, P. Comer, D. Osborne,
D. Semmens, and K. Gergely
US-IALE 2004, SW ReGAP Special Session
31 March 2004
The Southwest Regional Gap Analysis Project:
A Database Model for Regional Landscape Assessment, Resource Planning, and Vulnerability Analysis
Southwest Regional GAP Project
Arizona, Colorado, Nevada, New Mexico, and Utah
US-IALE 2004, Las Vegas, Nevada: Transdisciplinary Challenges in Landscape Ecology
BLM Ownership
Vegetation Treatments EIS
National Forest System Lands
• Regions
• Stations
• National
•District/Forest
Gap Land Cover use in Fire Management
Fire Regime
1 - 0-35 year frequency and low to mixed severity
2 - 0-35 year frequency and high severity
3 - 35-100 + year frequency and mixed severity4 - 35-100 + year frequency and high severity
5 - 200 + year frequency and high severity
Non Fuels
BLM Field Office Boundary
The National Park Service Inventory and Monitoring Program
Alternative Futures
• Planning for the future is a complicated and uncertain process.
• Futures assessment requires input from stakeholders knowledgeable about policies in a region.
• Possible to investigate several “futures” or points of view at one time.
Regional Conservation Scenarios Regional Conservation Scenarios Utah High Plateaus Utah High Plateaus
USE MULTIPLE ASSUMPTIONS for 1) ECOLOGICAL REPRESENATATION and2) SOCIO-ECONOMIC TRADEOFF
TO GENERATE ALTERNATIVE SCENARIOS
Ecoregion and watersheds
Grid of 750 he spatial analysis
units
Rare Species Occurrence
Derived from Gap Land
Cover
Freshwater Ecosystems
(headwater reaches)
Migratory Species Habitat Value
Land Use Compatibility
Spatial Spatial Optimization Optimization
AlgorithmAlgorithm
Expert Review
and Refinemen
t
Spatial Optimization
Meeting Multi-Criteria Objectives
Principle Effects of Land Cover on Watershed Response
Precipitation
Evapotranspiration
InfiltrationGroundwater
InterceptionRunoff VolumePeak FlowSediment YieldWater Quality
Land cover
Watershed Discretization (model elements)
++
LandCover
Soil
Rain
Results
Run model and import results
Intersect model elements with
Digital Elevation
Model (DEM)
Sediment yield (t/ha)Sediment discharge (kg/s)
Water yield (mm)Channel Scour (mm)
Transmission loss (mm)Peak flow (m3/s or mm/hr)
Surface runoff (mm)Sediment yield (kg)
Percolation (mm)Runoff (mm or m3)
ET (mm)Plane Infiltration (mm)
Precipitation (mm)Channel Infiltration (m3/km)
SWAT OutputsKINEROS Outputs
AGWA Inputs and Outputs
AGWA Inputs
Land Cover Soils DEM - Elevation
AGWA-SWAT Water Yield
(millimeters)
AGWA-SWAT Sediment Yield
(tons/hectare)
Future?
Other Regional GAP projects?