soils landscape ee program tom millard research geomorphologist coast forest region
TRANSCRIPT
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Soils Landscape EE Program
Tom MillardResearch Geomorphologist
Coast Forest Region
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Overview
• Evaluation questions
• Selection of evaluation areas
• Methods
• Indicators
• Progress to date
• Plans for next year
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Evaluation questions
• Do access structures have the least possible impact on productive soil loss and hydrologic function of the soil?
• Are harvest or road-related landslides occurring?• Are harvest or road-related slides likely to occur
as a result of recent forest practices?• Are harvest or road-related gully processes
occurring? • Are harvest or road-related snow avalanches
occurring?
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Evaluation areas
• Watersheds 5000 – 10,000 ha in size
• Need to decide on process for selecting watersheds
• Coastal areas and some Interior areas – driven by landslide issues
• Many Interior areas primarily soil disturbance/permanent access issues
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Evaluation methods
• Primarily remote sensing/GIS data collection and output
• Field-level sub-sampling to confirm remote sensing results
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Remote sensing
• Orthophotos or regular aerial photos• Satellite images
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Next Generation Satellites
• WorldView – launch 2006– 50 cm panchromatic resolution– 2.0-meter multispectral resolution
• Orbview-5 – launch early 2007– 41 cm panchromatic resolution– 1.64 m MSS (GeoEye – Orbimage/ Spaceimaging)
• US Reconnaissance Keyhole-13– Classified but analysts believe 4-10 cm resolution
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Indicators – Access Structures
• % of the productive forest area devoted to permanent access
• Classify roads by type and condition
• Compare to assumptions contained in TSR
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Indicators – occurrence of landslides
• Number of landslides occurring that are related to forest practices
• Effect on soil productivity
• Non-soil impacts (timber, fish habitat, community water supply, private property damage, injury/death of individuals)
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Indicators – landslide likelihood
• The likelihood of harvest or road-related slides occurring within approximately the next 15 years
• Need to evaluate the amount of Class IV and Class V terrain harvested/roaded, or
• Use Terrain Attribute Data to predict (approximately) the number of landslides expected to occur
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Indicators – Gully processes
• Inventory number and type of adverse gully processes
• Remote sensing – scale issues
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Indicators – snow avalanches
• Some avalanche tracks identifiable from remote sensing
• Needs work
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Progress to date
• One pilot in place – Hellroaring Creek near Cranbrook
• Data being collected/summarized now
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Plans for next year
• 2 – 3 pilots: Coast, NIR and/or SIR
• Need substantial GIS resources
• Need very recent aerial photography/orthophotos/satellite imagery