Benchmark maps of 39 years of secondary forest age for Brazil

Benchmark maps of 39 years of secondary forest age for Brazil Overview Annual maps of secondary forest dynamics for Brazil (1986–2024), derived from MapBiomas Collection 10.1 land-use and land-cover data processed in Google Earth Engine. Only the Forest Formation class is included. This dataset is an update of the original benchmark maps published in Scientific Data (2020), now extended to 39 years of coverage (1986–2024) using MapBiomas Collection 10.1 as input data. Contact: Celso H. L. Silva Junior — [e-mail] Products Product Description Period Files Increment New secondary forest pixels in year t — pixels transitioning from anthropic use (year t−1) to forest (year t) 1986–2024 39 Extent Binary presence/absence of secondary forest — accumulated from prior year or re-established 1986–2024 39 Age Cumulative years of continuous secondary forest presence since the last disturbance 1986–2024 39 Loss Secondary forest pixels cleared in year t 1987–2024 38 Total: 155 files Technical Specifications Parameter Value Spatial resolution 30 m Coordinate reference system EPSG:4326 (Geographic, WGS84) File format Cloud-Optimised GeoTIFF (COG) Analysis period — Increment, Extent, Age 1986–2024 Analysis period — Loss 1987–2024 Input data MapBiomas Collection 10.1 Forest class Forest Formation only Version v8.1 File naming convention ybyra_secondary_forest_{product}_brazil_v8_1_{year}.tif Methodology Summary The mapping algorithm operates in four sequential steps applied annually to the MapBiomas land-cover time series: Step Description 1 Reclassify MapBiomas classes into forest / non-forest binary maps; apply Oil Palm and Water masks 2 Identify annual increment: pixels transitioning from anthropic use (year t−1) to forest (year t) 3 Accumulate extent and detect loss: presence maintained from prior year or cleared 4 Calculate age: cumulative years of continuous secondary forest presence Key masking layers Mask Source Oil Palm extent Descals et al. (2021) Water bodies MapBiomas Collection 10.1 (class 33) Forest cover MapBiomas Collection 10.1 (classes 3 and 6) Data Access Cloud-Optimised GeoTIFF — Source Cooperative (this repository) All annual COG files are available directly via HTTP/HTTPS for cloud-native access (GDAL, rasterio, QGIS, R terra, etc.): Base URL: https://data.source.coop/ybyra-br/secondary-forest/ Browse: https://source.coop/ybyra-br/secondary-forest Google Earth Engine (GEE) — multi-band assets The full dataset is also available as multi-band GEE assets (one band per year, named classification_YYYY): var age = ee.Image('users/ybyrabr/public/secondary_forest_age_collection10_1_v8_1'); var extent = ee.Image('users/ybyrabr/public/secondary_forest_extent_collection10_1_v8_1'); var increment = ee.Image('users/ybyrabr/public/secondary_forest_increment_collection10_1_v8_1'); var loss = ee.Image('users/ybyrabr/public/secondary_forest_loss_collection10_1_v8_1'); STAC Catalog A SpatioTemporal Asset Catalog (STAC) is available for programmatic discovery:https://celsohlsj.github.io/ybyrastac/ Complete File List Increment (1986–2024) — 39 files https://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_1986.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_1987.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_1988.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_1989.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_1990.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_1991.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_1992.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_1993.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_1994.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_1995.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_1996.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_1997.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_1998.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_1999.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2000.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2001.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2002.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2003.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2004.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2005.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2006.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2007.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2008.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2009.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2010.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2011.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2012.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2013.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2014.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2015.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2016.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2017.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2018.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2019.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2020.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2021.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2022.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2023.tifhttps://data.source.coop/ybyra-br/secondary-forest/increment/ybyra_secondary_forest_increment_brazil_v8_1_2024.tif Extent (1986–2024) — 39 files https://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_1986.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_1987.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_1988.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_1989.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_1990.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_1991.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_1992.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_1993.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_1994.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_1995.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_1996.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_1997.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_1998.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_1999.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2000.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2001.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2002.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2003.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2004.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2005.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2006.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2007.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2008.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2009.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2010.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2011.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2012.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2013.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2014.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2015.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2016.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2017.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2018.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2019.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2020.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2021.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2022.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2023.tifhttps://data.source.coop/ybyra-br/secondary-forest/extent/ybyra_secondary_forest_extent_brazil_v8_1_2024.tif Age (1986–2024) — 39 files https://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_1986.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_1987.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_1988.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_1989.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_1990.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_1991.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_1992.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_1993.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_1994.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_1995.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_1996.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_1997.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_1998.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_1999.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2000.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2001.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2002.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2003.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2004.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2005.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2006.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2007.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2008.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2009.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2010.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2011.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2012.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2013.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2014.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2015.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2016.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2017.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2018.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2019.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2020.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2021.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2022.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2023.tifhttps://data.source.coop/ybyra-br/secondary-forest/age/ybyra_secondary_forest_age_brazil_v8_1_2024.tif Loss (1987–2024) — 38 files https://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_1987.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_1988.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_1989.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_1990.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_1991.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_1992.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_1993.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_1994.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_1995.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_1996.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_1997.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_1998.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_1999.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2000.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2001.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2002.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2003.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2004.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2005.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2006.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2007.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2008.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2009.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2010.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2011.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2012.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2013.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2014.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2015.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2016.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2017.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2018.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2019.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2020.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2021.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2022.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2023.tifhttps://data.source.coop/ybyra-br/secondary-forest/loss/ybyra_secondary_forest_loss_brazil_v8_1_2024.tif How to Cite This dataset is free to use. If you use it in your research, please cite the original paper and the dataset repository. We also welcome users to contact us for collaboration opportunities. Paper Silva Junior, C.H.L., Heinrich, V.H.A., Freire, A.T.G., Broggio, I.S., Rosan, T.M., Doblas, J., Anderson, L.O., Rousseau, G.X., Shimabukuro, Y.E., Silva, C.A., House, J.I., Aragão, L.E.O.C. Benchmark maps of 33 years of secondary forest age for Brazil. Scientific Data (2020). https://doi.org/10.1038/s41597-020-00600-4 Dataset (Zenodo) Silva Junior, C.H.L. et al. Benchmark maps of 39 years of secondary forest age for Brazil. Zenodo (2026). https://doi.org/10.5281/zenodo.8190133 Code The GEE JavaScript code used to produce this dataset is available at:https://github.com/celsohlsj/gee_brazil_sv Funding This dataset was produced with support from: Funding agency Grant / Process CNPq — Conselho Nacional de Desenvolvimento Científico e Tecnológico Process 401741/2023-0 (YbYrá-BR Project) CNPq Process 304664/2024-3 (Research Productivity Fellowship) License This dataset is licensed under the Creative Commons Attribution 4.0 International (CC BY 4.0) license.https://creativecommons.org/licenses/by/4.0/ You are free to share and adapt the material for any purpose, provided appropriate credit is given, a link to the license is provided, and any changes made are indicated. Total: 155 files · 4 products · Cloud-Optimised GeoTIFF (COG) · 30 m · EPSG:4326 · v8.1# 巴西39年次生林林龄基准图谱 ## 概述 本数据集包含巴西1986–2024年次生林动态年度图谱，基于**MapBiomas Collection 10.1**土地利用与土地覆被（land-use and land-cover）数据，经谷歌地球引擎（Google Earth Engine，GEE）处理生成，仅包含森林植被类（Forest Formation）。 本数据集是2020年发表于《Scientific Data》的原始基准图谱的更新版本，现以MapBiomas Collection 10.1为输入数据，将覆盖年限扩展至39年（1986–2024）。 ## 联系方式 Celso H. L. Silva Junior — [e-mail] ## 产品 | 产品类型 | 产品描述 | 时间范围 | 文件数量 | | ---- | ---- | ---- | ---- | | 增量（Increment） | t年度新增次生林像元——即从t-1年度的人为利用类型转变为t年度森林类型的像元 | 1986–2024 | 39 | | 分布范围（Extent） | 次生林的二元存在/缺失数据——基于前一年度累积或重新恢复的结果 | 1986–2024 | 39 | | 林龄（Age） | 自上次扰动以来连续存在的次生林累计年数 | 1986–2024 | 39 | | 损失（Loss） | t年度被清除的次生林像元 | 1987–2024 | 38 | 总计：155个文件 ## 技术规格 | 参数 | 参数值 | | ---- | ---- | | 空间分辨率 | 30米 | | 坐标参考系统 | EPSG:4326（地理坐标系，WGS84） | | 文件格式 | 云优化GeoTIFF（Cloud-Optimised GeoTIFF，COG） | | 增量、分布范围、林龄产品分析时段 | 1986–2024 | | 损失产品分析时段 | 1987–2024 | | 输入数据 | MapBiomas Collection 10.1 | | 森林类别 | 仅森林植被类（Forest Formation） | | 版本 | v8.1 | | 文件命名规则 | `ybyra_secondary_forest_{product}_brazil_v8_1_{year}.tif` | ## 方法概述 本制图算法以年度为单位，对MapBiomas土地覆被时间序列依次执行以下4个步骤： 1. 将MapBiomas地物类别重分类为森林/非森林二元图谱，并添加油棕与水体掩膜 2. 识别年度增量：从t-1年度人为利用类型转变为t年度森林类型的像元 3. 累积分布范围并检测损失：保留自前一年度的像元或被清除的像元 4. 计算林龄：连续存在的次生林累计年数 ## 关键掩膜图层 | 掩膜类型 | 来源 | | ---- | ---- | | 油棕分布范围 | Descals et al. (2021) | | 水体 | MapBiomas Collection 10.1（类别33） | | 森林覆被 | MapBiomas Collection 10.1（类别3和6） | ## 数据获取 ### 云优化GeoTIFF 可通过Source Cooperative（本数据集仓库）直接获取所有年度云优化GeoTIFF文件，支持GDAL、rasterio、QGIS、R terra等云原生工具通过HTTP/HTTPS直接访问： - 基础访问地址：https://data.source.coop/ybyra-br/secondary-forest/ - 浏览页面：https://source.coop/ybyra-br/secondary-forest ### 谷歌地球引擎（GEE）多波段资产 完整数据集也可作为GEE多波段资产获取（每年对应一个波段，命名为`classification_YYYY`）： js var age = ee.Image('users/ybyrabr/public/secondary_forest_age_collection10_1_v8_1'); var extent = ee.Image('users/ybyrabr/public/secondary_forest_extent_collection10_1_v8_1'); var increment = ee.Image('users/ybyrabr/public/secondary_forest_increment_collection10_1_v8_1'); var loss = ee.Image('users/ybyrabr/public/secondary_forest_loss_collection10_1_v8_1'); ### 时空资产目录（STAC） 提供时空资产目录（SpatioTemporal Asset Catalog，STAC）以支持程序化检索：https://celsohlsj.github.io/ybyrastac/ ## 完整文件列表 各产品完整文件列表可通过对应仓库路径浏览获取： 1. **增量产品（1986–2024）**：https://data.source.coop/ybyra-br/secondary-forest/increment/ 2. **分布范围产品（1986–2024）**：https://data.source.coop/ybyra-br/secondary-forest/extent/ 3. **林龄产品（1986–2024）**：https://data.source.coop/ybyra-br/secondary-forest/age/ 4. **损失产品（1987–2024）**：https://data.source.coop/ybyra-br/secondary-forest/loss/ ## 引用方式 本数据集可免费使用。若您的研究中使用了本数据集，请引用原始论文与数据集仓库。我们也欢迎用户联系我们开展合作。 ### 论文引用 > Silva Junior, C.H.L., Heinrich, V.H.A., Freire, A.T.G., Broggio, I.S., Rosan, T.M., Doblas, J., Anderson, L.O., Rousseau, G.X., Shimabukuro, Y.E., Silva, C.A., House, J.I., Aragão, L.E.O.C. Benchmark maps of 33 years of secondary forest age for Brazil. *Scientific Data* (2020). https://doi.org/10.1038/s41597-020-00600-4 ### 数据集引用（Zenodo） > Silva Junior, C.H.L. et al. Benchmark maps of 39 years of secondary forest age for Brazil. Zenodo (2026). https://doi.org/10.5281/zenodo.8190133 ### 代码获取 用于生成本数据集的GEE JavaScript代码可在以下地址获取：https://github.com/celsohlsj/gee_brazil_sv ## 资助信息 本数据集的制作得到以下机构的支持： | 资助机构 | 资助项目/编号 | | ---- | ---- | | 巴西国家科学技术发展委员会（Conselho Nacional de Desenvolvimento Científico e Tecnológico, CNPq） | 项目编号Process 401741/2023-0（YbYrá-BR项目） | | 巴西国家科学技术发展委员会（CNPq） | 研究生产力奖学金，项目编号Process 304664/2024-3 | ## 许可协议 本数据集采用知识共享署名4.0国际许可（Creative Commons Attribution 4.0 International，CC BY 4.0）协议，详情可访问：https://creativecommons.org/licenses/by/4.0/ 您可自由共享并改编本材料用于任何用途，但需注明适当的来源、提供本许可协议的链接，并注明所做的修改。 ## 总览 总计：155个文件 · 4类产品 · 云优化GeoTIFF（COG）格式 · 30米空间分辨率 · EPSG:4326坐标系 · 版本v8.1