LANDFIRE (LF), Landscape Fire and Resource Management Planning Tools, ABD Tarım Bakanlığı Orman Hizmetleri, ABD İçişleri Bakanlığı Jeolojik Araştırma Kurumu ve The Nature Conservancy'nin ortak bir programıdır.
LANDFIRE (LF) katmanları, sınıflandırma ve regresyon ağaçları kullanılarak kapsamlı saha referanslı verilere, uydu görüntülerine ve biyofiziksel gradyan katmanlarına dayalı tahmini arazi modelleri kullanılarak oluşturulur.
Mevcut bitki örtüsü yüksekliği (EVH), 30 metrelik bir hücredeki baskın bitki örtüsünün ortalama yüksekliğini ifade eder.
Eğitim verileri ve diğer coğrafi katmanlar kullanılarak ağaç, çalı ve otsu yaşam formları için ayrı ayrı kanopi yüksekliği oluşturulur. EVH, tür örtüsüne göre ağırlıklandırılmış ortalama yüksekliğe ve Mevcut Bitki Türü (EVT) yaşam biçimine göre belirlenir.
Alan referans verileri, lidar, Landsat ve yardımcı veriler kullanan karar ağacı modelleri, her yaşam formu için ayrı ayrı geliştirilir. Karar ağacı ilişkileri, yaşam formu türüne özgü yükseklik sınıfı katmanları oluşturmak için kullanılır. Bu katmanlar tek bir birleşik EVH katmanında birleştirilir.
LFRDB grafiği filtreleme için LF Remap ürünleri geliştirmek ve 2015 ile 2016'daki, kaynak görüntülerde görünmeyen bozulmaların dahil edilmesini sağlamak için bozulma verileri kullanılmıştır.
EVC ürünü daha sonra, yaşam formunun hem mevcut bitki örtüsü hem de EVT ürünleriyle senkronize edilmesini sağlamak için kalite güvencesi/kalite kontrolü önlemleriyle mutabakat edilir.
LF, yakıt ürünlerinin geliştirilmesi de dahil olmak üzere sonraki birkaç katmanda EVH kullanır.
LANDIFRE Vegetation veri kümeleri şunları içerir:
Biyofiziksel Ayarlar (BPS)
Çevresel Alan Potansiyeli (ESP)
Mevcut Bitki Örtüsü Alanı (EVC)
Mevcut bitki yüksekliği (EVH).
Mevcut Bitki Örtüsü Türü (EVT)
Bu katmanlar, sınıflandırma ve regresyon ağaçları kullanılarak kapsamlı saha referanslı verilere, uydu görüntülerine ve biyofiziksel gradyan katmanlarına dayalı tahmini arazi modelleri kullanılarak oluşturulur.
Bantlar
Piksel Boyutu 30 metre
Bantlar
Ad
Piksel Boyutu
Açıklama
EVH
metre
Mevcut Bitki Yüksekliği
Resim Özellikleri
Resim Özellikleri
Ad
Tür
Açıklama
EVH_classes
ÇİFT
Mevcut bitki örtüsü yüksekliğinin sınıf değerleri.
EVH_names
Dize
Mevcut bitki örtüsü yüksekliğinin açıklayıcı adları.
Kullanım Şartları
Kullanım Şartları
LANDFIRE verileri, kullanım kısıtlaması olmayan kamu malı verilerdir. Ancak ürünlerde değişiklik veya türetilmiş ürünler oluşturulursa karışıklığı önlemek için lütfen veri kümesine açıklayıcı bir değiştirici ekleyin.
Alıntılar
Alıntılar:
LANDFIRE ürünlerini alıntılamanın önerilen yolu her ürüne özeldir.
Bu nedenle, alıntı modeli belirli bir ürün örneğiyle birlikte sağlanır.
Yapımcıdır. Yayınlandığı yıl. Ürün xxxxx:
Bireysel model adı.
BpS Models and Descriptions, Online. LANDFIRE. Washington, DC. ABD Tarım Bakanlığı, Orman Hizmetleri
U.S. Department of the Interior; U.S. Geological Survey; Arlington, VA
The Nature Conservancy (Yapımcılar). Kullanılabilir URL. Erişim tarihi.
Örnek Alıntı: LANDFIRE Biophysical Settings. 2018. Biyofiziksel ortam 14420:
Güney Teksas kum tabakası çayırı. In: LANDFIRE Biophysical Setting Model: Map zone 36,
[Online]. In: BpS Models and Descriptions. In: LANDFIRE. Washington, DC:
U.S. Department of Agriculture, Forest Service; U.S. Department of the Interior;
U.S. Geological Survey; Arlington, VA: The Nature Conservancy (Producers).
Şu adreste mevcuttur: https://www.landfire.gov/bps-models.php [27 Haziran 2018].
LANDFIRE ürünlerinin alıntılanmasıyla ilgili ek bilgiyi burada bulabilirsiniz.
LANDFIRE (LF), Landscape Fire and Resource Management Planning Tools, ABD Tarım Bakanlığı Orman Hizmetleri, ABD İçişleri Bakanlığı Jeolojik Araştırma Kurumu ve The Nature Conservancy'nin ortak bir programıdır. LANDFIRE (LF) katmanları, kapsamlı …
[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)"]]
