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Land Cover and Soil Properties of the San Marcos Basin

Land Cover and Soil Properties of the San Marcos Basin. Cody McCann. Agenda. 1. Study Area. 2 . NDVI and SAVI . 3. Future Endeavors. The Good Ol ’ San Marcos Subbasin. Raw Landsat Data. Thermal Imagery DN: 8-bit, ranging from 0-255.

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Land Cover and Soil Properties of the San Marcos Basin

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  1. Land Cover and Soil Properties of the San Marcos Basin Cody McCann

  2. Agenda 1. Study Area 2. NDVI and SAVI 3. Future Endeavors

  3. The Good Ol’ San Marcos Subbasin

  4. Raw Landsat Data Thermal Imagery DN: 8-bit, ranging from 0-255 Normal Imagery: Red, Green, and Blue Composite Bands

  5. NDVI and SAVI Progress Diagram Radiance Reflectance Correction Conversion Calculate the Radiance from Landsat 7 Landsat 5 TM to Landsat 7 ETM+ Convert the Radiance into Reflectance Correct Reflectance Data

  6. NDVI

  7. Why SAVI? • Soil-Adjusted Vegetation Index • Best used when: • Low Vegetative Cover • Different Soil Types • Modification of NDVI

  8. SAVI of the Subbasin

  9. Direct Relation to Water

  10. Direct Relation to Water

  11. Relation to the Edwards Aquifer

  12. Relation to the Edwards Aquifer

  13. Future Endeavors • Soil Brightness • Soil and Land Cover • Soil and Stream Network

  14. Questions? Thanks! Dr. Maidment and Dr. Kilic

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