Project impact assessment on deforestation and forest degradation: forest disturbance dataset
Files
Date
2018-08-31
DOI
Authors
Bullock, Eric L.
Nolte, Christoph
Reboredo Segovia, Ana
Version
OA Version
Citation
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).
Abstract
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.
Description
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: bullocke@bu.edu
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%
License
CC0 1.0 Universal