MIT Licensehttps://opensource.org/licenses/MIT
License information was derived automatically
This web mapping application contains a vegetation type map (1:100,000) was prepared for the Tongass National Forest to provide up-to-date and more complete information about vegetative communities across the Ketchikan Misty Fjords Project Area. Approximately 4.6 million acres, 3.5 million acres of which are terrestrial lands including the area of inland waterbodies and rivers, were mapped through a partnership between the Geospatial Technology and Applications Center (GTAC), Tongass National Forest, and the Alaska Regional Office. The Tongass National Forest and their partners prepared the regional classification system, identified the desired map units (map classes) and provided general project management. GTAC provided project support and expertise in vegetation mapping. A combination of field and photo interpreted reference data was used to inform the models that output the final map products. Federal and GTAC personnel collected plot data on the ground.Vegetation type was assigned to modeling units (mapping polygons) using predictive classification models. The minimum map feature depicted on the map is 0.25 acres. All map products were designed according to the Forest Service mid-level vegetation mapping standards in order to be stored in the Forest GIS and National databases. This map product was generated using imagery primarily acquired in 2019 - 2022 and reference information was collected in the summers of 2019 - 2022. Therefore, the final map can be considered indicative of the existing vegetation conditions found within the project boundary in 2022.For more detailed information on mapping methodology please see the Ketchikan Misty Fjords Existing Vegetation Project Report.
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MIT Licensehttps://opensource.org/licenses/MIT
License information was derived automatically
This web mapping application contains a vegetation type map (1:100,000) was prepared for the Tongass National Forest to provide up-to-date and more complete information about vegetative communities across the Ketchikan Misty Fjords Project Area. Approximately 4.6 million acres, 3.5 million acres of which are terrestrial lands including the area of inland waterbodies and rivers, were mapped through a partnership between the Geospatial Technology and Applications Center (GTAC), Tongass National Forest, and the Alaska Regional Office. The Tongass National Forest and their partners prepared the regional classification system, identified the desired map units (map classes) and provided general project management. GTAC provided project support and expertise in vegetation mapping. A combination of field and photo interpreted reference data was used to inform the models that output the final map products. Federal and GTAC personnel collected plot data on the ground.Vegetation type was assigned to modeling units (mapping polygons) using predictive classification models. The minimum map feature depicted on the map is 0.25 acres. All map products were designed according to the Forest Service mid-level vegetation mapping standards in order to be stored in the Forest GIS and National databases. This map product was generated using imagery primarily acquired in 2019 - 2022 and reference information was collected in the summers of 2019 - 2022. Therefore, the final map can be considered indicative of the existing vegetation conditions found within the project boundary in 2022.For more detailed information on mapping methodology please see the Ketchikan Misty Fjords Existing Vegetation Project Report.