- Dataset Availability
- 2000-01-01T00:00:00Z–2010-12-31T00:00:00Z
- Dataset Provider
- NASA LP DAAC at the USGS EROS Center
- Earth Engine Snippet
-
ee.ImageCollection("GLCF/GLS_TCC") - Tags
Description
The Landsat Vegetation Continuous Fields (VCF) tree cover layers contain estimates of the percentage of horizontal ground in each 30-m pixel covered by woody vegetation greater than 5 meters in height. The data represent three nominal epochs, 2000, 2005 and 2010, compiled from the NASA/USGS Global Land Survey (GLS) collection of Landsat data. The product is derived from all seven bands of Landsat-5 Thematic Mapper (TM) and/or Landsat-7 Enhanced Thematic Mapper Plus (ETM+), depending on the GLS image selection.
Tree cover, the proportional, vertically projected area of vegetation (including leaves, stems, branches, etc.) of woody plants above a given height, affects terrestrial energy and water exchanges, photosynthesis and transpiration, net primary production, and carbon and nutrient fluxes. Tree cover also affects habitat quality and movements of wildlife, residential property value for humans, and other ecosystem services. The continuous classification scheme of the VCF product enables better depiction of land cover gradients than traditional discrete classification schemes. Importantly for detection and monitoring of forest changes (e.g., deforestation and degradation), tree cover provides a measurable attribute upon which to define forest cover and its changes. Changes in tree cover over time can be used to monitor and retrieve site-specific histories of forest change.
The dataset has been produced for three year epochs: 2000, 2005, 2010, with an image in the collection for each available WRS2 path/row.
Bands
Resolution
30 meters
Bands
| Name | Units | Min | Max | Description |
|---|---|---|---|---|
tree_canopy_cover |
% | 0 | 100 | The percentage of pixel area covered by trees. |
uncertainty |
RMSE for tree-canopy_cover |
|||
source_index |
Identity of source image used for the particular pixel. This is an index into the per image metadata array 'sources'. |
Image Properties
Image Properties
| Name | Type | Description |
|---|---|---|
| path | DOUBLE | Path |
| pathrow | STRING | Path and row |
| row | DOUBLE | Row |
| sources | DOUBLE | Sources |
| tree_canopy_cover_class_palette | DOUBLE | Tree canopy cover class palette |
| tree_canopy_cover_class_values | DOUBLE | Tree canopy cover class values |
| year | DOUBLE | Year |
Terms of Use
Terms of Use
Intellectual property rights to this dataset belong to University of Maryland, Department of Geographical Sciences and NASA. Usage is free if acklowedgement is made.
Citations
Data citation: Tree Canopy Cover, {Year, ...}, Global Land Cover Facility.
Paper/Methods Citation: Sexton, J. O., Song, X.-P., Feng, M., Noojipady, P., Anand, A., Huang, C., Kim, D.-H., Collins, K.M., Channan, S., DiMiceli, C., Townshend, J.R.G. (2013). Global, 30-m resolution continuous fields of tree cover: Landsat-based rescaling of MODIS Vegetation Continuous Fields with lidar-based estimates of error. International Journal of Digital Earth, 130321031236007. doi:10.1080/17538947.2013.786146.
DOIs
Explore with Earth Engine
Code Editor (JavaScript)
var dataset = ee.ImageCollection('GLCF/GLS_TCC')
.filter(ee.Filter.date('2010-01-01', '2010-12-31'));
var treeCanopyCover = dataset.select('tree_canopy_cover');
var treeCanopyCoverVis = {
min: 0.0,
max: 100.0,
palette: ['ffffff', 'afce56', '5f9c00', '0e6a00', '003800'],
};
Map.setCenter(-88.6, 26.4, 3);
Map.addLayer(treeCanopyCover, treeCanopyCoverVis, 'Tree Canopy Cover');