Caucasus Corona Land Cover and Change Mapping

Interactive land cover reconstruction and change analysis for 1960-2015.

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GEE

• App for full interactive visualization
• Full GEE repository

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Scripts

• scripts/01_visualization_overview.js
  Quick visualization of 1965, 1987, and 2015 land cover maps.

• scripts/02_prepare_landcover_maps.js
  Pulls 1960s Corona land cover and prepares 1987 and 2015 reference maps.

• scripts/03_change_maps.js
  Generates change maps for 1965-1987, 1965-2015, and 1987-2015.

• scripts/04_area_summary.js
  Calculates class areas and exports summary tables.

• scripts/05_validation_sampling.js
  Generates stratified validation samples and exports them.

• app/visualize_all_in_one_app.js
  Interactive visualization app combining all layers.

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Class labels

Corona map land cover labels

• 1 = forest
• 4 = barren
• 5 = grassland
• 6 = cropland
• 7 = urban
• 8 = wetland
• 9 = water
• 10 = snow
• 11 = river (later merged into water)
• 13 = cloud (masked out for change detection)
• 15 = cloud shadow (masked out for change detection)

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Change labels used in final change maps

• 11 = stable forest
• 15 = forest loss
• 16 = forest to cropland
• 22 = others
• 44 = stable barren
• 51 = forest growth
• 54 = grassland degradation
• 55 = stable grassland
• 56 = agricultural expansion
• 61 = forest growth
• 65 = crop abandonment
• 66 = stable crop
• 68 = crop abandonment
• 75 = agricultural expansion
• 77 = stable urban
• 88 = stable wetland
• 99 = stable water

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Workflow order

1. run 02_prepare_landcover_maps.js
2. run 03_change_maps.js
3. run 04_area_summary.js
4. run 05_validation_sampling.js
5. run 01_visualization_overview.js (optional for visualization)
6. run app/visualize_all_in_one_app.js (for full interactive app)