Service Path Attribution Networks (SPANs): Spatially Quantifying the Flow of Ecosystem Services from Landscapes to People

  • Gary W. Johnson
  • Kenneth J. Bagstad
  • Robert R. Snapp
  • Ferdinando Villa
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6016)

Abstract

Ecosystem services are the effects on human well-being of the flow of benefits from ecosystems to people over given extents of space and time. The Service Path Attribution Network (span) model provides a spatial framework for quantifying these flows, providing a new means of estimating these economic benefits. This approach discovers dependencies between provision and usage endpoints, spatial competition among users for scarce resources, and landscape effects on ecosystem service flows. Particularly novel is the model’s ability to identify the relative density of these flows throughout landscapes and to determine which areas are affected by upstream flow depletion. span descriptions have been developed for a number of services(aesthetic viewsheds, proximity to open space, carbon sequestration, flood mitigation, nutrient cycling, and avoided sedimentation/deposition), which vary in scale of effect, mechanism of provision and use, and type of flow. Results using real world data are shown for the US Puget Sound region.

Keywords

ecosystem services ecosystem service assessment span model service path attribution network environmental planning service flows flow modeling flow density flow criticality 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Gary W. Johnson
    • 1
    • 2
  • Kenneth J. Bagstad
    • 2
  • Robert R. Snapp
    • 1
  • Ferdinando Villa
    • 2
  1. 1.Department of Computer ScienceUniversity of VermontBurlingtonUSA
  2. 2.Ecoinformatics Collaboratory, Gund Institute for Ecological EconomicsUniversity of VermontBurlingtonUSA

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