2023-05-04T13:11:58.897143

2025-04-02T17:40:42.768830

30

30 × 30 meters

Global land (excluding Antarctica and Arctic islands)

global

Use the following credit when these data are displayed: Source: Hansen/UMD/Google/USGS/NASA, accessed through Global Forest Watch Use the following credit when these data are cited: Hansen, M. C., P. V. Potapov, R. Moore, M. Hancher, S. A. Turubanova, A. Tyukavina, D. Thau, S. V. Stehman, S. J. Goetz, T. R. Loveland, A. Kommareddy, A. Egorov, L. Chini, C. O. Justice, and J. R. G. Townshend. 2013. “High-Resolution Global Maps of 21st-Century Forest Cover Change.” Science 342 (15 November): 850–53. Data available on-line from:https://glad.umd.edu/dataset/global-2010-tree-cover-30-m. Accessed through Global Forest Watch on [date]. www.globalforestwatch.org

Tree cover

(2000/2010, Hansen/UMD/Google/USGS/NASA)

Hansen, M. C., P. V. Potapov, R. Moore, M. Hancher, S. A. Turubanova, A. Tyukavina, D. Thau, S. V. Stehman, S. J. Goetz, T. R. Loveland, A. Kommareddy, A. Egorov, L. Chini, C. O. Justice, and J. R. G. Townshend. 2013. “High-Resolution Global Maps of 21st-Century Forest Cover Change.” _Science_ 342 (15 November): 850–53. [doi: 10.1126/science.1244693](https://doi.org/10.1126/science.1244693). Data available from: [https://glad.earthengine.app/view/global-forest-change](https://glad.earthengine.app/view/global-forest-change).

[CC BY 4.0](http://creativecommons.org/licenses/by/4.0/)

English

This data set, a collaboration between the [GLAD](http://glad.geog.umd.edu/) (Global Land Analysis & Discovery) lab at the University of Maryland, Google, USGS, and NASA, displays tree cover over all global land (except for Antarctica and a number of Arctic islands) for the years 2000 and 2010 at 30 × 30 meter resolution. “Percent tree cover” is defined as the density of tree canopy coverage of the land surface and is color-coded by density bracket (see legend).<br><br>Data in this layer were generated using multispectral satellite imagery from the [Landsat 7](http://landsat.usgs.gov/) thematic mapper plus (ETM+) sensor. The clear surface observations from over 600,000 images were analyzed using Google Earth Engine, a cloud platform for earth observation and data analysis, to determine per pixel tree cover using a supervised learning algorithm.<br><br>The tree cover canopy density of the displayed data varies according to the selection - use the legend on the map to change the minimum tree cover canopy density threshold.

Identifies areas of tree cover

For the purpose of this study, “tree cover” was defined as all vegetation taller than 5 meters in height. “Tree cover” is the biophysical presence of trees and may take the form of natural forests or plantations existing over a range of canopy densities.

CC BY 4.0

Land Cover

Important baseline for the Hansen change layers

https://storage.googleapis.com/earthenginepartners-hansen/GFC-2023-v1.11/download.html

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