Project impact assessment on deforestation and forest degradation: Forest Disturbance Dataset
Reboredo Segovia, Ana
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Citation (published version)Segovia, A. R., Bullock, E. L., Corral, L., & Nolte, C. (2018). Project Impact Assessment on Deforestation and Forest Degradation (pp. 1-44, Rep. No. 2149/BL-GU).
Guatemala has 259 designated protected areas covering approximately 32% of its land (or around 35,000 km2). From 2012-2017, the Inter-American Development Bank (IDB) and Guatemala invested in the mapping and demarcation of land boundaries related to the nation’s protected areas. The goal of our project was to investigate the effectiveness of the program in reducing forest disturbances within the protected areas. Deforestation and degradation were mapped at 30m resolution using Landsat data and the Continuous Degradation Detected (CODED) algorithm on the Google Earth Engine. The study time period was January 1, 1999 through December 31, 2017. The results are a mapped dataset with information on dates of deforestation and degradation events for the Republic of Guatemala. The file can be opened in any software intended for geospatial analysis such as QGIS, ArcGIS, or ENVI.
AUTHORS: Eric Bullock, Ana Reboredo Segovia, and Christoph Nolte COLLABORATING INSTITUTIONS: Inter-American Development Bank (IDB), Boston University, Registro de Información Catastral, and Consejo Nacional de Areas Protegidas (CONAP) CONTACT: email@example.com START DATE: 1999-01-01 END DATE: 2017-12-31 SPATIAL RESOLUTION: 30m DATASOURCE: Landsat 4, 5, 7, and 8 ALGORITHM: Continuous Degradation Detection (CODED), see: github.com/bullocke/coded FORMAT: GeoTIFF DIMENSIONS: 14968, 15127 COMPRESSION: LZW INTERLEAVE: Band PROJECTION: EPSG:4326 WGS 84 ** BAND INFORMATION AND PIXEL VALUES BAND 1: Map Strata 1. Stable forest 2. Not stable forest 7. Degradation 8. Deforestation BAND 2: First deforestation date 1999-2017: Disturbance date BAND 3: First degradation date 1999-2017: Disturbance date ** VALIDATION AND ESTIMATION SAMPLING PROCEDURE: Stratified Random Samples SAMPLING AND ANALYSIS TOOLS: github.com/bullocke/gee-assessment-toolbox REFERENCE DATA: Google Earth imagery and Landsat historical data STRATA AND SAMPLES 1. Forest 400 2. Non Forest 300 3. Degradation 150 4. Deforestation 150 5. Buffer 100 AREA ESTIMATES AND STANDARD ERRORS (HECTARES) 1. Forest 4860711.641 (104561.4505) 2. Non Forest 4702034.137 (90917.05746) 3. Deforestation 859800.9247 (39926.73148) 4. Degradation 958812.9767 (68792.98674) ACCURACIES Overall Accuracy: 87.6% Producers: Forest: 95.8% Non-Forest: 86.7% Deforestation: 85.6% Degradation: 52.9% Users: Forest: 82.3% Non-Forest: 95.6% Deforestation: 85.7% Degradation: 83.9%
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