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Published byAngelina Hart Modified over 9 years ago
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GIS and evaluating ecosystem services Jim Quinn Information Center for the Environment UCDavis jfquinn@ucdavis.edu
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Economic Outputs of Sustainably Managed Ecosystems Marketed goods –Food and fiber –Recreational opportunities –Water –Coming – Carbon Sequestration
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Economic Outputs of Sustainably Managed Ecosystems Costs avoided –Health impacts of air and water pollution –Fire –Flooding Non-market values –Wildlife –Stewardship values, etc.
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Big money New York City –$4.5 billion in water treatment avoided Millennium Assessment –Hundreds of billions of savings to cities in water supply and water quality alone Just because large amounts of money are hard to measure doesn’t mean they should be ignored
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Charge to land use agencies, planners, and NGOs A land use plan that provides an effective portfolio of production and ecosystem values Institutional framework so beneficiaries reimburse providers
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What do we know pretty well? Land use and land cover Drinking water quality Watershed management projects
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Habitat Types Elkhorn Slough Watershed
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Drinking Water Sources for Public Water Systems* in California
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Statewide Assessment Results Groundwater Sources
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Watershed Protection Natural Resources Project Inventory
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Where do we need better information? Non-point-source threats –(e.g. nutrients and pathogens from septic systems) Groundwater recharge zones Water delivery and pricing
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What can we model? Future land use Watershed exports Economic performance of competing land use scenarios (as in the Blueprint process)?
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Future Land Use SJ Valley Growth Scenarios (UPlan) Many Different types: –Compact –Species Protection –Ag. Protection –Urban Cores –Economic Development
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Digital Elevation Model 10 meter resolution Riparian Corridor Delineation 200 meter radius from streams 1996 Aerial Photographs Hourly Solar Incidence for Critical Date: July 22 Vegetation Distribution Converted to Height by DBH Class & Percent Hardwood / Conifer Reach Averaged Values attributed to linear hydrographic network for Current Conditions & Potential Conditions Restoring Impaired Waterways Riparian-Topographic Shading Model
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RipTopo & Aquatic Conservation
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RipTopo Riparian Corridor
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Current Shading Conditions Potential Shading Conditions RipTopo Model Results
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