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Land cover change analysis
This document summarizes land cover change analysis tools and data developed by NOAA to improve conservation and restoration efforts in the Great Lakes region. It describes the Coastal Change Analysis Program, which maps land cover every 5 years. Analysis of C-CAP data from 1985 to 2010 found increases in developed and scrubland areas and decreases in agriculture, forest, and grasslands. The document also outlines a land cover atlas, wetland modeling tool, planned water quality tool, and an open-source nonpoint source pollution model.
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Land cover change analysis
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- 3. Office of Ocean and Coastal Resource Management | Coastal Services Center Overview • Coastal Change Analysis Program (C‐CAP) • C‐CAP Trends in the Great Lakes •Land Cover Atlas • Wetland Potential Data Model • Water Quality Assessment Tool (In Development) • Open‐source Nonpoint Source Pollution and Erosion Comparison Tool (OpenNSPECT)
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- 5. Office of Ocean and Coastal Resource Management | Coastal Services Center Coastal Change Analysis Program (C‐CAP) • NOAA maps 25% of the contiguous U.S. • Coastal Expression of the NLCD (National Land Cover Database) NLCD is 95% C‐CAP in coastal areas •Added focus on wetlands detail • Updated every 5 years • Produced through change detection and update mapping process • High Resolution Available*
- 6. Office of Ocean and Coastal Resource Management | Coastal Services Center C‐CAP Development: 2010/2011 as of April 2014 Available Now (with improvements) Available Now (without improvements) This imagecannot currently be displayed.This image cannot currently be displayed.
- 7. Office of Ocean and Coastal Resource Management | Coastal Services Center C‐CAP Development: Great Lakes 1975 1985 19962001 2006 2010 2015 Illinois FY15 Indiana FY15 Michigan FY15 Pending Minnesota FY15 New York FY15 Pending Ohio FY15 Pending Pennsylvania FY15 Pending Wisconsin FY15
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- 13. Office of Ocean and Coastal Resource Management | Coastal Services Center C‐CAP Trends in the Great Lakes Percent Change 96 ‐ 01 01 ‐ 0606 ‐ 10 96 ‐ 10 Developed 0.31% 0.12% 0.23% 0.66% Agriculture ‐0.12% ‐0.08% ‐0.13% ‐0.33% Grassland ‐0.27% 0.12% 0.04% ‐0.11% Forest ‐0.13% ‐0.24% ‐0.26% ‐0.64% Scrub 0.17% 0.07% 0.13% 0.37% Wetland 0.05% 0.00% ‐0.01% 0.04% Barren 0.05% 0.02% 0.00% 0.06% Open Water ‐0.05% ‐0.01% 0.00% ‐0.06%
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- 17. Office of Ocean and Coastal Resource Management | Coastal Services Center C‐CAP Land Cover Atlas • Online Data Viewer (no desktop software required) • User Friendly Access •Summarizes general land change trends • Customizable Analysis • Now Available: – 2010 Data – Watershed Selection
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- 23. Office of Ocean and Coastal Resource Management | Coastal Services Center C‐CAP Data Application: Potential Wetland Modeling Background: • Improve wetland mapping accuracies • Use data and methods extendable nationally •Align with Federal Geographic Data Committee (FGDC) wetland mapping standard • Provide flexibility for multiple wetland definitions • Integrate RS and ancillary data Challenges: •Wetlands are not always wet •Canopy is not easy to see through •Landsat is often not the best scale for wetlands •Ancillary data has not been available historically •Best available data all have “warts” of their own
- 24. Office of Ocean and Coastal Resource Management | Coastal Services Center Input Data Included: • National Wetlands Inventory (NWI) • Gridded Soil Survey Geographic (gSSURGO) Database •National Hydrography Dataset (NHD) • National Elevation Data (NED) • Landsat Imagery • Existing C‐CAP Land Cover C‐CAP Data Application: Potential Wetland Modeling
- 25. Office of Ocean and Coastal Resource Management | Coastal Services Center C‐CAP Data Application: Potential Wetland Modeling • Step 1: Create a wetland potential surface from nationally available / standard data sets. –Use the strengths of each to overcome the weaknesses of others. • Step 2: Use this layer to flag and correct the mapping of wetlands land cover categories. – Flag uplands that could be wet and wetlands that might not be.
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- 29. Office of Ocean and Coastal Resource Management | Coastal Services Center Open‐source Nonpoint Source Pollution and Erosion Comparison Tool (OpenNSPECT) • Open‐source software – Map Window 4.x (Windows) •Data Inputs: – Land Cover / Use – Elevation – Soil – Rainfall Factor (R‐Factor) – Precipitation
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- 31. Office of Ocean and Coastal Resource Management | Coastal Services Center Thank You! NOAA Coastal Services Center Contacts: • Brandon Krumwiede – Great Lakes Geospatial Coordinator [email protected] •Nate Herold – Physical Scientist, C‐CAP Manager [email protected] • Dave Eslinger – Physical Scientist, OpenNSPECT Project Lead [email protected]