The TREES-3 project of the Joint Research Centre of the European Commission aimed at assessing change of the world’s tropical forest cover, for the periods 1990–2000 and 2000–2010. Based on a systematic sampling approach, multi-temporal satellite imagery were analysed for a large number of sample sites in the tropics (4016 sample units of 10x10 km2 size).
Processing: Imagery of Landsat satellites (TM and ETM+ sensors) at spatial resolution of 30m was pre-processed as input to automated procedures of image segmentation (eCognition software), digital classification and change detection. Visual assessments and quality control/validation were performed using dedicated image analysis tools and involving forestry experts from tropical countries. Changes in forest area were mapped and change statistics and matrices established. The results also served as input to the Remote Sensing Survey of the FAO Global Forest Resources Assessment programme (FRA).
References for Tropical dataset
Determination of tropical deforestation rates and related carbon losses from 1990 to 2010
Global Change Biology (2014) 20, 2540–2554
References for Continental or Regional datasets
Land cover changes in the Brazilian Cerrado and Caatinga biomes from 1990 to 2010 based on a systematic remote sensing sampling approach
Applied Geography 58 (2015) 116-127
Changes in tropical forest cover of Southeast Asia from 1990 to 2010
Biogeosciences. 11, 247-258 (2014)
State and evolution of the African rainforests between 1990 and 2010
Phil. Trans. R. Soc. B 368: 20120300
Continental estimates of forest cover and forest cover changes in the dry ecosystems of Africa for the period 1990 - 2000
Journal of Biogeography (J. Biogeogr.) (2013) 40, 1036–1047
Forest cover changes in tropical South and Central America from 1990 to 2005 and related carbon emissions and removals
Remote Sens. 2012, 4, 1369-1391