[null,null,[],[[["\u003cp\u003eThis dataset provides a satellite-based forest age map of Canada's forested ecozones for the year 2019, at a 30-meter spatial resolution.\u003c/p\u003e\n"],["\u003cp\u003eThe forest age is determined using remote sensing data from Landsat and MODIS, through disturbance, recovery, or allometric approaches.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset, covering trees of all ages including an "old tree" category for those over 150 years, is primarily generated through the allometric approach (86.6%).\u003c/p\u003e\n"],["\u003cp\u003eThis resource is openly available and licensed under CC-BY 4.0, supported by the Government of Canada, and provided by the National Forest Information System.\u003c/p\u003e\n"],["\u003cp\u003eUsers can explore the data within Google Earth Engine, utilizing a provided JavaScript snippet to visualize forest age.\u003c/p\u003e\n"]]],["The core content details a Canadian forest age map dataset for 2019, spanning Canada's forested ecozones at a 30-meter resolution. It uses Landsat and MODIS data to determine forest age. The dataset employs disturbance, recovery, and allometric approaches to determine age. The dataset is available from 2019-01-01T01:00:00Z to 2020-01-01T01:00:00Z, is open-source under a CC-BY 4.0 license, and can be accessed through Google Earth Engine. The dataset is provided by the National Forest Information System.\n"],null,["# Landsat-derived forest age for Canada 2019\n\nDataset Availability\n: 2019-01-01T01:00:00Z--2020-01-01T01:00:00Z\n\nDataset Provider\n:\n\n\n [National Forest Information System](https://opendata.nfis.org/mapserver/nfis-change_eng.html)\n\nTags\n:\n[canada](/earth-engine/datasets/tags/canada) [forest](/earth-engine/datasets/tags/forest) [forest-biomass](/earth-engine/datasets/tags/forest-biomass) \n\n#### Description\n\nCanadian primary forest dataset is a satellite-based forest age map for\n2019 across Canada's forested ecozones at a 30-m spatial resolution.\nRemotely-sensed data from Landsat (disturbances, surface\nreflectance composites, forest structure) and MODIS (Gross Primary\nProduction) are utilized to determine age.\n\nForest age can be determined where disturbance can be identified directly\n(disturbance approach) or inferred using spectral information (recovery\napproach) or using inverted allometric equations to model age where there\nis no evidence of disturbance (allometric approach). The disturbance\napproach is based upon satellite data and mapped changes and is the most\naccurate. The recovery approach also relies upon satellite data plus logic\nregarding forest succession, with an accuracy that is greater than pure\nmodeling.\n\nGiven the lack of widespread recent disturbance over Canada's forests, the\nallometric approach is required over the greatest area (86.6%). Using\ninformation regarding realized heights and growth and yield modeling, ages\nare estimated where none are otherwise possible. Trees of all ages are\nmapped, with trees \\\u003e150 years old combined in an \"old tree\" category.\n\n### Bands\n\n\n**Pixel Size**\n\n30 meters\n\n**Bands**\n\n| Name | Units | Pixel Size | Description |\n|----------|-------|------------|-------------|\n| `forest` | y | meters | Forest age |\n\n### Terms of Use\n\n**Terms of Use**\n\nThe forest age map described herein for Canada's forested ecosystems is\ndeclared open source and supported by the Government of Canada. The dataset\nis licensed under the [CC-BY 4.0 license](https://creativecommons.org/licenses/by/4.0/).\n\n### Explore with Earth Engine\n\n| **Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine)\n\n### Code Editor (JavaScript)\n\n```javascript\nvar dataset = ee.ImageCollection('CANADA/NFIS/NTEMS/CA_FOREST_AGE');\n\nMap.setCenter(-107.94, 58.18, 3);\nMap.addLayer(\n dataset,\n {palette: ['006600', '002200', 'fff700', 'ab7634', 'c4d0ff', 'ffffff']},\n 'Canada Primary Forest Data');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/CANADA/CANADA_NFIS_NTEMS_CA_FOREST_AGE) \n[Landsat-derived forest age for Canada 2019](/earth-engine/datasets/catalog/CANADA_NFIS_NTEMS_CA_FOREST_AGE) \nCanadian 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 ... \nCANADA/NFIS/NTEMS/CA_FOREST_AGE, canada,forest,forest-biomass \n2019-01-01T01:00:00Z/2020-01-01T01:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://opendata.nfis.org/mapserver/nfis-change_eng.html)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/CANADA_NFIS_NTEMS_CA_FOREST_AGE)"]]
