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Texas Ecological Systems Database Project

Texas Ecological Systems Database Project. Data access at: http://www.tpwd.state.tx.us/landwater/land/maps/gis/tescp/index.phtml. Project Goals. Increase resolution of landcover mapping for Texas Use field data to validate project

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Texas Ecological Systems Database Project

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  1. Texas Ecological Systems Database Project Data access at: http://www.tpwd.state.tx.us/landwater/land/maps/gis/tescp/index.phtml

  2. Project Goals • Increase resolution of landcover mapping for Texas • Use field data to validate project • Integrate High Plains mapping with Texas Ecological Mapping Systems Data

  3. Phase 6 September 2013 Texas Ecological Mapping Systems Database Project Phase 1 Available Now Phase LPC February 2012 Phase 2 Available Now Phase 5 September 2012 Phase 3 Available Now Phase 4 September 2011

  4. Floyd – Motley Area Bing Maps

  5. Floyd – Motley Area EMS

  6. Products/Enduring Value • Potential natural vegetation • Existing vegetation using an improved classification • Improved Ecological Systems interpretations for High Plains • Abiotic Site Type Data • Ground truth dataset (1,000+ Points in High Plains / 10,000+ Points Statewide) • User will build their own added value: • Context (local, regional, statewide) • Management options • Conservation opportunity areas • Ecological significance and risk (riverine/aquatics as well) • Species habitat modeling • Development of educational and interpretive materials • Change detection

  7. Field Data Collected includes: • Top 3 dominant species in Tree, Shrub, Herbaceous and Succulent Strata • Percent Woody and Herbaceous Cover • Includes % Live Oak, Shrub, Tree, other Evergreen • Landcover and Mapping System • Reference photo

  8. Current Extent of Texas Ecological Mapping System Data

  9. Environmental data (slope, aspect, elevation, solar insolation) Training data from air photos plus ground data 3-date TM Satellite Imagery (30m resolution) Land use data (NRCS Common Land Units) Classify Land Cover (e.g. cold deciduous forest) Draft Mapping Targets (NatureServe Ecological Systems) Assign Information using soils, ecoregions, geology, ecological site type, hydrology (“modeling”) Create Map with Named Mapping Units (e.g. West Gulf Coastal Plain Bottomland Seasonally Flooded Forest) Provide Interpretation of Mapping Units (booklet, summary statistics by ecoregion, etc.) Design and Execute Presentation

  10. Modeling Inputs • National Agricultural Imagery Program 2010 Ortho-imagery • TPWD Generated Image Objects • Multi-date Landsat TM5 Imagery • TPWD Developed Landcover Data (12 Classes) • 1:24k National Hydrologic Data • National Elevation Dataset 10m DEMs • Playa Lakes Joint Venture Probable Playa Layer • TPWD Updated Common Land Unit Data • TPWD Modified Natural Resource Conservation Service SSURGO Data

  11. Ecological Mapping Systems

  12. Object Generation Steps – Raw NAIP

  13. Object Generation Steps – PCA

  14. Object Generation Steps _ PCA 10m

  15. Object Generation Steps – PCA zoom

  16. Object Generation Steps – PCA 10m zoom

  17. Object Generation Steps – ERDAS Imagine Objective

  18. Object Generation Steps _ PCA 10m and Objects

  19. Object Generation Steps _ PCA 10m and Objects zoom

  20. SSURGO Soils: • Extensive clean-up of soils • Edge match ESD across county boundaries • Make sure ESD spatial distribution makes sense

  21. SSURGO Soils Ecological Site Descriptions • Before TPWD modification

  22. TPWD Modified ESDs

  23. Landcover Classes Barren Agriculture Deciduous Woodland and Forest Deciduous Shrub Coniferous Evergreen Shrub High Intensity Urban Low Intensity Urban Marsh Mixed Woodland and Forest Open Water Dense Deciduous Shrub Grassland

  24. Floyd – Motley Area Landsat

  25. Floyd – Motley Area Landcover

  26. Floyd – Motley Area Riparian

  27. Floyd – Motley Area Slope Zones

  28. Floyd – Motley Area TPWD Modified ESDs

  29. Floyd – Motley Area SSURGO Map Units

  30. Floyd – Motley Area PLJV Probable Playas

  31. Floyd – Motley Area EMS

  32. Ecological Modeling Interpretation

  33. Partial Legend of Mapped Types

  34. Modeling Existing Vegetation Type Using Ecological Site Types (Ecoclasses) and Landcover

  35. Evolving and Improving Implementation • Initially implemented in raster. Time consuming and prone to error introduction. • Moved to vector, working with attributed polygons. • Initial models used Excel. Moved to Access to reduce error introduction through transcription. • Initial vector models used Model Builder. Moved to python to make implementation more transparent and reproducible. • Improvements result in ability to rapidly iterate changes in model to visualization in map. Modeling issues can be quickly visualized and corrected.

  36. Texas Ecological Mapping Systems Database Status April 2011 Data access at: http://www.tpwd.state.tx.us/landwater/land/maps/gis/tescp/index.phtml

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