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Managing Western Managing Western Rangelands with GIS and Rangelands with GIS and Remote Sensing Remote Sensing Keith T. Weber GIS Director Idaho State University
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Managing Western Rangelands with GIS and Remote Sensing Keith T. Weber GIS Director Idaho State University.

Dec 30, 2015

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Page 1: Managing Western Rangelands with GIS and Remote Sensing Keith T. Weber GIS Director Idaho State University.

Managing Western Managing Western Rangelands with GIS and Rangelands with GIS and

Remote SensingRemote Sensing

Managing Western Managing Western Rangelands with GIS and Rangelands with GIS and

Remote SensingRemote SensingKeith T. WeberGIS Director

Idaho State University

Page 2: Managing Western Rangelands with GIS and Remote Sensing Keith T. Weber GIS Director Idaho State University.

Research TeamResearch TeamResearch TeamResearch Team

• Sudhanshu Panda, Nancy Glenn, Matthew Germino, Scott Hughes, and Richard Inouye (ISU)

• Steven Seefeldt and Bret Taylor (USSES)

• Numerous grad students

Page 3: Managing Western Rangelands with GIS and Remote Sensing Keith T. Weber GIS Director Idaho State University.

AcknowledgementsAcknowledgementsAcknowledgementsAcknowledgements

• NASA• USDA ARS- USSES• USDI BLM

Page 4: Managing Western Rangelands with GIS and Remote Sensing Keith T. Weber GIS Director Idaho State University.

What are Rangelands?What are Rangelands?What are Rangelands?What are Rangelands?

• Typically semi-arid (brittle)

• Grass and shrub dominated

• Not cultivated, irrigated, or fertilized

• Occupies 44% of Idaho

Page 5: Managing Western Rangelands with GIS and Remote Sensing Keith T. Weber GIS Director Idaho State University.

Our Study AreaOur Study AreaOur Study AreaOur Study Area

Page 6: Managing Western Rangelands with GIS and Remote Sensing Keith T. Weber GIS Director Idaho State University.

A Brief History…A Brief History…A Brief History…A Brief History…

• Land cover change study• Explore the primary agents of

change– Weeds– Fire– Urbanization

Page 7: Managing Western Rangelands with GIS and Remote Sensing Keith T. Weber GIS Director Idaho State University.

IssuesIssuesIssuesIssues

• Invasive weeds• Wildfires• Desertification

Page 8: Managing Western Rangelands with GIS and Remote Sensing Keith T. Weber GIS Director Idaho State University.

Our Role to ManagersOur Role to ManagersOur Role to ManagersOur Role to Managers

• Decision support tools– Predictive models

• Public outreach to decision makers– Increase understanding

Page 9: Managing Western Rangelands with GIS and Remote Sensing Keith T. Weber GIS Director Idaho State University.

Issue #1- Target Weed Issue #1- Target Weed SpeciesSpecies

Issue #1- Target Weed Issue #1- Target Weed SpeciesSpecies

• Cheatgrass– Interesting species– Brief life history

• Leafy Spurge

Page 10: Managing Western Rangelands with GIS and Remote Sensing Keith T. Weber GIS Director Idaho State University.

Current resultsCurrent resultsCurrent resultsCurrent results

• Cheatgrass is difficult to detect reliably– Detection threshold– Patchy target– Similar to non-target features

• We have used Landsat, SPOT, and Quickbird imagery.

Page 11: Managing Western Rangelands with GIS and Remote Sensing Keith T. Weber GIS Director Idaho State University.

Patchy TargetPatchy TargetPatchy TargetPatchy Target

Page 12: Managing Western Rangelands with GIS and Remote Sensing Keith T. Weber GIS Director Idaho State University.

Spectral SimilaritySpectral SimilaritySpectral SimilaritySpectral Similarity

Page 13: Managing Western Rangelands with GIS and Remote Sensing Keith T. Weber GIS Director Idaho State University.

Issue #2, WildfireIssue #2, WildfireIssue #2, WildfireIssue #2, Wildfire

• Reliable fuel load modeling• Current rangeland fire severity

modeling

Page 14: Managing Western Rangelands with GIS and Remote Sensing Keith T. Weber GIS Director Idaho State University.

Issue #3, Issue #3, DesertificationDesertification

Issue #3, Issue #3, DesertificationDesertification

• For land managers and land stewards…– Bio-diversity issue– Why is this weed here?– What are we to do about high fuel

loads?– What can we do about the exposed

soils?

Page 15: Managing Western Rangelands with GIS and Remote Sensing Keith T. Weber GIS Director Idaho State University.

Holistic IntegrationHolistic IntegrationHolistic IntegrationHolistic Integration

• Symptoms of degraded rangeland health– Loss of bio-diversity– Weeds– Bare ground– Ineffective water cycles with

exacerbated drought effects• We have studied the symptoms…

now let’s move to the cause.

Page 16: Managing Western Rangelands with GIS and Remote Sensing Keith T. Weber GIS Director Idaho State University.

Why are the Rangelands Why are the Rangelands Degraded?Degraded?

Why are the Rangelands Why are the Rangelands Degraded?Degraded?

• It appears to be…– Years of over-rest– Following years of over-grazing of plants

• Why?– Grasses evolved with grazing

• Grazed once in a season….not numerous times

– Animal impact is important• Hoof action

– Look at corral areas in the study area

Page 17: Managing Western Rangelands with GIS and Remote Sensing Keith T. Weber GIS Director Idaho State University.

Quantifying Rangeland Quantifying Rangeland Health: ModelingHealth: Modeling

Quantifying Rangeland Quantifying Rangeland Health: ModelingHealth: Modeling

Page 18: Managing Western Rangelands with GIS and Remote Sensing Keith T. Weber GIS Director Idaho State University.

Importance of Rangeland Importance of Rangeland Health Modeling and Health Modeling and

ForecastingForecasting

Importance of Rangeland Importance of Rangeland Health Modeling and Health Modeling and

ForecastingForecasting• Big picture• Addresses end-user core concerns • Reliable models possible

Page 19: Managing Western Rangelands with GIS and Remote Sensing Keith T. Weber GIS Director Idaho State University.

Thank YouThank YouThank YouThank You

• For more information visit our Internet Map Server at:– http://giscenter-ims.isu.edu/

website/rangelands/viewer.htm– Or visit our home page

http://giscenter.isu.edu