Landsat-derived forest age for Canada 2019

CANADA/NFIS/NTEMS/CA_FOREST_AGE
Dataset Availability
2019-01-01T01:00:00Z–2020-01-01T01:00:00Z
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("CANADA/NFIS/NTEMS/CA_FOREST_AGE")
Tags
canada forest

Description

Canadian primary forest dataset is a satellite-based forest age map for 2019 across Canada's forested ecozones at a 30-m spatial resolution. Remotely-sensed data from Landsat (disturbances, surface reflectance composites, forest structure) and MODIS (Gross Primary Production) are utilized to determine age.

Forest age can be determined where disturbance can be identified directly (disturbance approach) or inferred using spectral information (recovery approach) or using inverted allometric equations to model age where there is no evidence of disturbance (allometric approach). The disturbance approach is based upon satellite data and mapped changes and is the most accurate. The recovery approach also avails upon satellite data plus logic regarding forest succession, with an accuracy that is greater than pure modeling.

Given the lack of widespread recent disturbance over Canada's forests, the allometric approach is required over the greatest area (86.6%). Using information regarding realized heights and growth and yield modeling, ages are estimated where none are otherwise possible. Trees of all ages are mapped, with trees >150 years old combined in an "old tree" category.

Bands

Resolution
30 meters

Bands

Name Units Description
forest y

Forest age

Terms of Use

Terms of Use

The forest age map described herein for Canada's forested ecosystems is declared open source and supported by the Government of Canada. The dataset is licensed under the CC-BY 4.0 license.

Explore with Earth Engine

Code Editor (JavaScript)

var dataset = ee.ImageCollection('CANADA/NFIS/NTEMS/CA_FOREST_AGE');

Map.setCenter(-107.94, 58.18, 3);
Map.addLayer(
    dataset,
    {palette: ['006600', '002200', 'fff700', 'ab7634', 'c4d0ff', 'ffffff']},
    'Canada Primary Forest Data');
Open in Code Editor