LANDFIRE (LF), Landscape Fire and Resource Management Planning Tools, ist ein gemeinsames Programm der Wildland Fire Management-Programme des Forest Service des US Department of Agriculture, des Geological Survey des US Department of the Interior und von The Nature Conservancy.
LANDFIRE-Ebenen (LF) werden mithilfe von prädiktiven Landschaftsmodellen erstellt, die auf umfangreichen feldbezogenen Daten, Satellitenbildern und biophysikalischen Gradientenebenen basieren und Klassifizierungs- und Regressionsbäume verwenden.
Die vorhandene Vegetationshöhe (Existing Vegetation Height, EVH) gibt die durchschnittliche Höhe der dominanten Vegetation für eine 30‑m-Zelle an.
Die Höhe des Kronendachs wird separat für Bäume, Sträucher und krautige Pflanzen mithilfe von Trainingsdaten und anderen Geodaten-Layern generiert. Die durchschnittliche Höhe wird anhand der durchschnittlichen Höhe bestimmt, die nach der Artenabdeckung gewichtet wird, und basiert auf der Lebensform des vorhandenen Vegetationstyps (Existing Vegetation Type, EVT).
Entscheidungsbaummodelle mit Feldreferenzdaten, Lidar, Landsat und Zusatzdaten werden separat für jede Lebensform entwickelt. Mithilfe von Entscheidungsbaumbeziehungen werden höhenklassenspezifische Ebenen für Lebensformen generiert, die in einer einzelnen zusammengesetzten EVH-Ebene zusammengeführt werden.
Störungsdaten wurden verwendet, um LF Remap-Produkte für die LFRDB-Diagrammfilterung zu entwickeln und dafür zu sorgen, dass Störungen von 2015 und 2016 berücksichtigt wurden, die auf den Quellbildern nicht sichtbar waren.
Das EVC-Produkt wird dann durch Maßnahmen zur Qualitätssicherung und ‑kontrolle abgeglichen, um sicherzustellen, dass die Lebensform mit den Produkten „Existing Vegetation Cover“ (Vorhandene Vegetationsdecke) und „EVT“ (Environmental Variables for Topography, Umgebungsfaktoren für die Topografie) synchronisiert ist.
LF verwendet EVH in mehreren nachfolgenden Schichten, einschließlich der Entwicklung der Kraftstoffprodukte.
Vorhandener Vegetationstyp (Existing Vegetation Type, EVT): Diese Ebenen werden mithilfe von Vorhersagemodellen für die Landschaft erstellt, die auf umfangreichen feldbezogenen Daten, Satellitenbildern und biophysikalischen Gradientenebenen basieren und Klassifikations- und Regressionsbäume verwenden.
Bänder
Pixelgröße 30 Meter
Bänder
Name
Pixelgröße
Beschreibung
EVH
Meter
Vorhandene Vegetationshöhe
Bildattribute
Bildattribute
Name
Typ
Beschreibung
EVH_classes
DOUBLE
Klassenwerte der vorhandenen Vegetationshöhe.
EVH_names
STRING
Beschreibende Namen für die Höhe der vorhandenen Vegetation.
Nutzungsbedingungen
Nutzungsbedingungen
LANDFIRE-Daten sind gemeinfreie Daten ohne Nutzungsbeschränkungen. Wenn jedoch Änderungen oder Ableitungen des Produkts bzw. der Produkte erstellt werden, fügen Sie dem Datensatz bitte einen beschreibenden Modifikator hinzu, um Verwirrung zu vermeiden.
Zitate
Quellenangaben:
Die empfohlene Art und Weise, LANDFIRE-Produkte zu zitieren, ist für jedes Produkt spezifisch. Daher wird das Modell für die Zitation mit einem Beispiel für ein bestimmtes Produkt bereitgestellt.
Produzent. Erscheinungsjahr. Produkt xxxxx:
Name des einzelnen Modells.
BpS Models and Descriptions, Online. LANDFIRE. Washington, D.C. U.S. Department of
Agriculture, Forest Service
U.S. Department of the Interior; U.S. Geological Survey; Arlington, VA
The Nature Conservancy (Produzenten). Verfügbare URL Zugriffsdatum.
Beispiel für Quellenangabe: LANDFIRE Biophysical Settings. 2018. Biophysikalische Umgebung 14420:
Grasland auf Sandebene im Süden von Texas. In: LANDFIRE Biophysical Setting Model: Map zone 36, [Online]. In: BpS Models and Descriptions. In: LANDFIRE. Washington, D.C.: U.S. Department of Agriculture, Forest Service; U.S. Department of the Interior; U.S. Geological Survey; Arlington, VA: The Nature Conservancy (Produzenten).
Verfügbar unter: https://www.landfire.gov/bps-models.php [27. Juni 2018].
Weitere Informationen zum Zitieren von LANDFIRE-Produkten
LANDFIRE (LF), Landscape Fire and Resource Management Planning Tools, ist ein gemeinsames Programm der Wildland Fire Management-Programme des Forest Service des US-Landwirtschaftsministeriums, des Geological Survey des US-Innenministeriums und von The Nature Conservancy. LANDFIRE-Ebenen (LF) werden mithilfe von Vorhersagemodellen für Landschaften erstellt, die auf umfangreichen …
[null,null,[],[[["\u003cp\u003eThis dataset from LANDFIRE provides Existing Vegetation Height (EVH) data, representing the average height of dominant vegetation in 30-meter cells.\u003c/p\u003e\n"],["\u003cp\u003eThe EVH data is generated using predictive landscape models that incorporate field data, satellite imagery, and biophysical layers, created by collaborative efforts of the USDA, USFS, USGS, and The Nature Conservancy.\u003c/p\u003e\n"],["\u003cp\u003eThe LANDFIRE program, which produces this dataset, is a collaborative project that aids in wildland fire management and resource planning.\u003c/p\u003e\n"],["\u003cp\u003eThe EVH dataset, which is composed of bands in 30-meter pixel size, includes the height, classes, and descriptive names of the existing vegetation, and it is used to develop other layers including the fuel products.\u003c/p\u003e\n"],["\u003cp\u003eThis resource is publicly available, though it is recommended to cite LANDFIRE products, and to add a descriptive modifier to derivatives of the dataset to prevent confusion.\u003c/p\u003e\n"]]],["The LANDFIRE (LF) program, a collaboration between the USDA, USFS, USGS, and The Nature Conservancy, provides the Existing Vegetation Height (EVH) dataset. This dataset, available via Google Earth Engine, represents average vegetation height in 30-meter cells, derived from predictive models using field data, satellite imagery, and biophysical gradients. EVH is calculated by weighting the average height based on species cover and the Existing Vegetation Type. The data has no use restrictions. The dataset is from 2014-09-01.\n"],null,["# LANDFIRE EVH (Existing Vegetation Height) v1.4.0\n\nDataset Availability\n: 2014-09-01T00:00:00Z--2014-09-01T00:00:00Z\n\nDataset Provider\n:\n\n\n [U.S. Department of Agriculture's (USDA), U.S. Forest Service (USFS), U.S. Department of the Interior's Geological Survey (USGS), and The Nature Conservancy.](https://landfire.gov/)\n\nTags\n:\n[doi](/earth-engine/datasets/tags/doi) [fire](/earth-engine/datasets/tags/fire) [forest-biomass](/earth-engine/datasets/tags/forest-biomass) [landfire](/earth-engine/datasets/tags/landfire) [nature-conservancy](/earth-engine/datasets/tags/nature-conservancy) [usda](/earth-engine/datasets/tags/usda) [usgs](/earth-engine/datasets/tags/usgs) [vegetation](/earth-engine/datasets/tags/vegetation) [wildfire](/earth-engine/datasets/tags/wildfire) \n\n#### Description\n\nLANDFIRE (LF), Landscape Fire and Resource Management Planning Tools, is a\nshared program between the wildland fire management programs of the U.S.\nDepartment of Agriculture's Forest Service, U.S. Department of the Interior's\nGeological Survey, and The Nature Conservancy.\n\nLANDFIRE (LF) layers are created using predictive landscape models based on\nextensive field-referenced data, satellite imagery and biophysical gradient\nlayers using classification and regression trees.\n\nExisting Vegetation Height (EVH) represents the average height of the dominant vegetation for a 30-m cell.\nCanopy height is generated separately for tree, shrub, and herbaceous lifeforms using training data and other geospatial layers. EVH is determined by the average height weighted by species cover and based on the Existing Vegetation Type (EVT) lifeform.\n\n- Decision tree models using field reference data, lidar, Landsat, and ancillary data are developed separately for each lifeform. Decision tree relationships are used to generate lifeform specific height class layers, which are merged into a single composite EVH layer.\n\n- Disturbance data were used to develop LF Remap products for LFRDB plot filtering and to ensure 2015 and 2016 disturbances were included that were not visible in the source imagery.\n\n- The EVC product is then reconciled through QA/QC measures to ensure life-form is synchronized with both Existing Vegetation Cover and EVT products.\n\nLF uses EVH in several subsequent layers, including the development of the fuel products.\n\nThe LANDIFRE Vegetation datasets include:\n\n- Biophysical Settings (BPS)\n- Environmental Site Potential (ESP)\n- Existing Vegetation Canopy Cover (EVC)\n- Existing Vegetation Height (EVH).\n- Existing Vegetation Type (EVT) These layers are created using predictive landscape models based on extensive field-referenced data, satellite imagery and biophysical gradient layers using classification and regression trees.\n\n### Bands\n\n\n**Pixel Size**\n\n30 meters\n\n**Bands**\n\n| Name | Pixel Size | Description |\n|-------|------------|----------------------------|\n| `EVH` | meters | Existing Vegetation Height |\n\n### Image Properties\n\n**Image Properties**\n\n| Name | Type | Description |\n|-------------|--------|------------------------------------------------------|\n| EVH_classes | DOUBLE | Class values of the Existing Vegetation Height. |\n| EVH_names | STRING | Descriptive names of the Existing Vegetation Height. |\n\n### Terms of Use\n\n**Terms of Use**\n\nLANDFIRE data are public domain data with no use restrictions, though if modifications\nor derivatives of the product(s) are created, then please add some descriptive modifier\nto the data set to avoid confusion.\n\n### Citations\n\nCitations:\n\n- The suggested way to cite LANDFIRE products is specific to each product,\n so the model for citation is provided, with an example for a particular product.\n Producer. Year released. Product xxxxx:\n - Individual model name.\n - BpS Models and Descriptions, Online. LANDFIRE. Washington, DC. U.S. Department of Agriculture, Forest Service\n - U.S. Department of the Interior; U.S. Geological Survey; Arlington, VA\n - The Nature Conservancy (Producers). Available- URL. Access date.\n\n Example Citation: LANDFIRE Biophysical Settings. 2018. Biophysical setting 14420:\n South Texas sand sheet grassland. In: LANDFIRE Biophysical Setting Model: Map zone 36,\n \\[Online\\]. In: BpS Models and Descriptions. In: LANDFIRE. Washington, DC:\n U.S. Department of Agriculture, Forest Service; U.S. Department of the Interior;\n U.S. Geological Survey; Arlington, VA: The Nature Conservancy (Producers).\n Available: \u003chttps://www.landfire.gov/bps-models.php\u003e \\[2018, June 27\\].\n Additional guidance on citation of LANDFIRE products can be found\n [here](https://landfire.gov/data/citation)\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('LANDFIRE/Vegetation/EVH/v1_4_0');\n\nvar visualization = {\n bands: ['EVH'],\n};\n\nMap.setCenter(-121.671, 40.699, 5);\n\nMap.addLayer(dataset, visualization, 'EVH');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/LANDFIRE/LANDFIRE_Vegetation_EVH_v1_4_0) \n[LANDFIRE EVH (Existing Vegetation Height) v1.4.0](/earth-engine/datasets/catalog/LANDFIRE_Vegetation_EVH_v1_4_0) \nLANDFIRE (LF), Landscape Fire and Resource Management Planning Tools, is a shared program between the wildland fire management programs of the U.S. Department of Agriculture's Forest Service, U.S. Department of the Interior's Geological Survey, and The Nature Conservancy. LANDFIRE (LF) layers are created using predictive landscape models based on extensive ... \nLANDFIRE/Vegetation/EVH/v1_4_0, doi,fire,forest-biomass,landfire,nature-conservancy,usda,usgs,vegetation,wildfire \n2014-09-01T00:00:00Z/2014-09-01T00:00:00Z \n17.52 -175.1 71.48 -63.66 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://landfire.gov/)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/LANDFIRE_Vegetation_EVH_v1_4_0)"]]
