LANDFIRE (LF), Alat Perencanaan Pengelolaan Sumber Daya dan Kebakaran Lanskap, adalah program bersama antara program pengelolaan kebakaran hutan dari Forest Service, Departemen Pertanian Amerika Serikat, Geological Survey, Departemen Dalam Negeri Amerika Serikat, dan The Nature Conservancy.
Rezim kebakaran historis, interval, dan kondisi vegetasi Landfire (LF) dipetakan menggunakan Alat Pengembangan Dinamika Vegetasi (VDDT).
Data ini mendukung tujuan perencanaan pengelolaan kebakaran hutan dan lahan dalam National Cohesive Wildland Fire Management Strategy, Federal Wildland Fire Management Policy, dan Healthy Forests Restoration Act.
Lapisan Persentase Kebakaran dengan tingkat keparahan Penggantian (PRS) mengukur jumlah kebakaran dengan tingkat keparahan penggantian relatif terhadap kebakaran dengan tingkat keparahan rendah dan campuran dalam rezim kebakaran historis yang diasumsikan.
Tingkat keparahan penggantian ditentukan sebagai lebih dari 75 persen rata-rata pembakaran atas dalam perimeter kebakaran umum untuk jenis vegetasi tertentu.
PRS berasal dari model dinamika vegetasi dan gangguan VDDT (Vegetation Dynamics Development Tool) (LF 1.0.0 CONUS hanya menggunakan model dinamika vegetasi dan gangguan LANDSUM).
Lapisan ini dimaksudkan untuk menjelaskan satu komponen karakteristik rezim kebakaran historis dalam konteks periode waktu historis yang lebih luas yang diwakili oleh lapisan Setelan Biofisik(BPS) LANDFIRE (LF) dan dokumentasi Model BPS.
Lapisan ini dibuat dengan menautkan atribut Grup BPS di lapisan BPS dengan data Pelacak Model Refresh (RMT) dan menetapkan atribut PRS.
Produk geospasial ini harus menampilkan perkiraan PRS yang wajar, seperti yang didokumentasikan dalam RMT.
PRS digunakan dalam penilaian lanskap.
Set data Kebakaran LANDIFRE mencakup:
Grup Rezim Kebakaran (FRG) dimaksudkan untuk mengkarakterisasi rezim kebakaran historis yang diasumsikan dalam lanskap berdasarkan interaksi antara dinamika vegetasi, penyebaran kebakaran, efek kebakaran, dan konteks spasial
Mean Fire Return Interval (MFRI) mengukur rata-rata periode antara kebakaran di bawah rezim kebakaran historis yang diasumsikan
Gambar Persen Kebakaran Ringan (PLS) mengukur jumlah kebakaran ringan dibandingkan dengan kebakaran dengan tingkat keparahan campuran dan penggantian di bawah rezim kebakaran historis yang diasumsikan dan didefinisikan sebagai rata-rata kurang dari 25 persen pembunuhan bagian atas dalam perimeter kebakaran umum untuk jenis vegetasi tertentu
Lapisan Persentase Kebakaran dengan Tingkat Keparahan Campuran (PMS) mengukur jumlah kebakaran dengan tingkat keparahan campuran relatif terhadap kebakaran dengan tingkat keparahan rendah dan penggantian di bawah rezim kebakaran historis yang diasumsikan, dan didefinisikan sebagai antara 25 dan 75 persen rata-rata kematian bagian atas dalam perimeter kebakaran umum untuk jenis vegetasi tertentu
Lapisan Persentase Kebakaran dengan Tingkat Keparahan Penggantian (PRS) mengukur jumlah kebakaran dengan tingkat keparahan penggantian relatif terhadap kebakaran dengan tingkat keparahan rendah dan campuran dalam rezim kebakaran historis yang diasumsikan, dan didefinisikan sebagai lebih besar dari 75 persen rata-rata kematian total dalam perimeter kebakaran umum untuk jenis vegetasi tertentu
Lapisan Kelas Suksesi (SClass) mengkarakterisasi kondisi vegetasi saat ini sehubungan dengan komposisi spesies vegetasi, penutupan, dan rentang ketinggian kondisi suksesi yang terjadi dalam setiap pengaturan biofisik
Kelas Kondisi Vegetasi (VCC) merepresentasikan kategorisasi sederhana dari
lapisan Perbedaan Vegetasi (VDEP) terkait dan menunjukkan tingkat umum
perbedaan vegetasi saat ini dengan kondisi referensi vegetasi historis yang disimulasikan
Perbedaan Vegetasi (VDep) menunjukkan seberapa berbeda vegetasi saat ini di lanskap dengan perkiraan kondisi historis. VDep didasarkan pada perubahan komposisi spesies, tahap struktural, dan penutupan kanopi.
Band
Ukuran Piksel 30 meter
Band
Nama
Ukuran Piksel
Deskripsi
PRS
meter
Persen Kebakaran dengan Tingkat Keparahan Penggantian
Tabel Kelas PRS
Nilai
Warna
Deskripsi
1
#008200
0-5%
2
#138f00
6-10%
3
#229c00
11-15%
4
#34a600
16-20%
5
#47b300
21-25%
6
#66bf00
26-30%
7
#7ecc00
31-35%
8
#9bd900
36-40%
9
#b8e600
41-45%
10
#e2f200
46-50%
11
#fffb00
51-55%
12
#fadd00
56-60%
13
#f7c600
61-65%
14
#f5a300
66-70%
15
#f08c00
71-75%
16
#eb7100
76-80%
17
#e85d00
81-85%
18
#e63d00
86-90%
19
#e32a00
91-95%
20
#de1200
96-100%
111
#0000ff
Air
112
#c8ffff
Salju / Es
131
#4e4e4e
Tersia-Sia
132
#b2b2b2
Vegetasi Jarang
133
#e1e1e1
Rezim Kebakaran Tidak Tentu
Properti Gambar
Properti Gambar
Nama
Jenis
Deskripsi
PRS_classes
DOUBLE
Nilai class Kebakaran - tingkat keparahan Penggantian.
PRS_names
STRING
Nama deskriptif untuk Kebakaran dengan tingkat keparahan Penggantian.
Persyaratan Penggunaan
Persyaratan Penggunaan
Data LANDFIRE adalah data domain publik tanpa batasan penggunaan, meskipun jika modifikasi atau turunan produk dibuat, harap tambahkan beberapa pengubah deskriptif ke set data untuk menghindari kebingungan.
Kutipan
Kutipan:
Cara yang disarankan untuk mengutip produk LANDFIRE khusus untuk setiap produk,
sehingga model kutipan disediakan, dengan contoh untuk produk tertentu.
Produser. Tahun rilis. Produk xxxxx:
Nama model individu.
Model dan Deskripsi BpS, Online. LANDFIRE. Washington, DC. Departemen Pertanian Amerika Serikat, Dinas Kehutanan
U.S. Department of the Interior; U.S. Geological Survey; Arlington, VA
The Nature Conservancy (Produser). Tersedia - URL. Tanggal akses.
Contoh Kutipan: LANDFIRE Biophysical Settings. 2018. Lingkungan biofisik 14420:
Padang rumput hamparan pasir Texas Selatan. Dalam: LANDFIRE Biophysical Setting Model: Map zone 36,
[Online]. Dalam: Model dan Deskripsi BpS. Di: 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 (Produser).
Tersedia: https://www.landfire.gov/bps-models.php [2018, 27 Juni].
Panduan tambahan tentang kutipan produk LANDFIRE dapat ditemukan di sini.
LANDFIRE (LF), Landscape Fire and Resource Management Planning Tools, adalah program bersama antara program pengelolaan kebakaran hutan dari Forest Service, U.S. Department of Agriculture, Geological Survey, U.S. Department of the Interior, dan The Nature Conservancy. Rezim kebakaran historis, interval, dan kondisi vegetasi Landfire (LF) dipetakan menggunakan …
[null,null,[],[[["\u003cp\u003eThe LANDFIRE Fire PRS dataset quantifies the amount of replacement-severity fires (greater than 75% top-kill) relative to low- and mixed-severity fires under the presumed historical fire regime.\u003c/p\u003e\n"],["\u003cp\u003eIt is a product of the LANDFIRE program, a shared program between the USDA Forest Service, USGS, and The Nature Conservancy.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset covers the period from 2010-01-01 to 2010-12-31 and has a spatial resolution of 30 meters.\u003c/p\u003e\n"],["\u003cp\u003eThe PRS layer is derived using the Vegetation Dynamics Development Tool (VDDT) and is used in landscape assessments.\u003c/p\u003e\n"],["\u003cp\u003eThis dataset is public domain and can be accessed and analyzed using Google Earth Engine.\u003c/p\u003e\n"]]],[],null,["# LANDFIRE PRS (Percent of Replacement-severity Fire) v1.2.0\n\nDataset Availability\n: 2010-01-01T00:00:00Z--2010-12-31T00:00:00Z\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) [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) Historical fire regimes, intervals, and vegetation conditions\nare mapped using the Vegetation Dynamics Development Tool (VDDT).\nThese data support fire and landscape management planning goals in\nthe National Cohesive Wildland Fire Management Strategy, the Federal Wildland\nFire Management Policy, and the Healthy Forests Restoration Act.\n\nThe Percent of Replacement-severity Fire (PRS) layer quantifies the amount of replacement-severity fires relative to low- and mixed-severity fires under the presumed historical fire regime.\nReplacement severity is defined as greater than 75 percent average top-kill within a typical fire perimeter for a given vegetation type.\nPRS was derived from the vegetation and disturbance dynamics model VDDT (Vegetation Dynamics Development Tool) (LF 1.0.0 CONUS only used the vegetation and disturbance dynamics model LANDSUM).\nThis layer is intended to describe one component of historical fire regime characteristics in the context of the broader historical time period represented by the LANDFIRE(LF) Biophysical Settings (BPS) layer and BPS Model documentation.\nThis layer is created by linking the BPS Group attribute in the BPS layer with the Refresh Model Tracker (RMT) data and assigning the PRS attribute.\nThis geospatial product should display a reasonable approximation of PRS, as documented in the RMT.\nPRS is used in landscape assessments.\n\nThe LANDIFRE Fire datasets include:\n\n- Fire Regime Groups (FRG) is intended to characterize presumed historical fire regimes within landscapes based on interactions between vegetation dynamics, fire spread, fire effects, and spatial context\n- Mean Fire Return Interval (MFRI) quantifies the average period between fires under the presumed historical fire regime\n- Percent of Low-severity Fire (PLS) image quantifies the amount of low-severity fires relative to mixed- and replacement-severity fires under the presumed historical fire regime and is defined as less than 25 percent average top-kill within a typical fire perimeter for a given vegetation type\n- Percent of Mixed-severity Fire (PMS) layer quantifies the amount of mixed-severity fires relative to low- and replacement-severity fires under the presumed historical fire regime, and is defined as between 25 and 75 percent average top-kill within a typical fire perimeter for a given vegetation type\n- Percent of Replacement-severity Fire (PRS) layer quantifies the amount of replacement-severity fires relative to low- and mixed-severity fires under the presumed historical fire regime, and is defined as greater than 75 percent average top-kill within a typical fire perimeter for a given vegetation type\n- Succession Classes (SClass) layer characterizes current vegetation conditions with respect to the vegetation species composition, cover, and height ranges of successional states that occur within each biophysical setting\n- Vegetation Condition Class (VCC) represents a simple categorization of the associated Vegetation Departure (VDEP) layer and indicates the general level to which current vegetation is different from the simulated historical vegetation reference conditions\n- Vegetation Departure (VDep) indicates how different current vegetation on a landscape is from estimated historical conditions. VDep is based on changes to species composition, structural stage, and canopy closure.\n\n### Bands\n\n\n**Pixel Size**\n\n30 meters\n\n**Bands**\n\n| Name | Pixel Size | Description |\n|-------|------------|--------------------------------------|\n| `PRS` | meters | Percent of Replacement-severity Fire |\n\n**PRS Class Table**\n\n| Value | Color | Description |\n|-------|---------|---------------------------|\n| 1 | #008200 | 0-5% |\n| 2 | #138f00 | 6-10% |\n| 3 | #229c00 | 11-15% |\n| 4 | #34a600 | 16-20% |\n| 5 | #47b300 | 21-25% |\n| 6 | #66bf00 | 26-30% |\n| 7 | #7ecc00 | 31-35% |\n| 8 | #9bd900 | 36-40% |\n| 9 | #b8e600 | 41-45% |\n| 10 | #e2f200 | 46-50% |\n| 11 | #fffb00 | 51-55% |\n| 12 | #fadd00 | 56-60% |\n| 13 | #f7c600 | 61-65% |\n| 14 | #f5a300 | 66-70% |\n| 15 | #f08c00 | 71-75% |\n| 16 | #eb7100 | 76-80% |\n| 17 | #e85d00 | 81-85% |\n| 18 | #e63d00 | 86-90% |\n| 19 | #e32a00 | 91-95% |\n| 20 | #de1200 | 96-100% |\n| 111 | #0000ff | Water |\n| 112 | #c8ffff | Snow / Ice |\n| 131 | #4e4e4e | Barren |\n| 132 | #b2b2b2 | Sparsely Vegetated |\n| 133 | #e1e1e1 | Indeterminate Fire Regime |\n\n### Image Properties\n\n**Image Properties**\n\n| Name | Type | Description |\n|-------------|--------|------------------------------------------------------------|\n| PRS_classes | DOUBLE | Class values of the Percent of Replacement-severity Fire. |\n| PRS_names | STRING | Descriptive names of Percent of Replacement-severity Fire. |\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/Fire/PRS/v1_2_0');\n\nvar visualization = {\n bands: ['PRS'],\n};\n\nMap.setCenter(-121.671, 40.699, 5);\n\nMap.addLayer(dataset, visualization, 'PRS');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/LANDFIRE/LANDFIRE_Fire_PRS_v1_2_0) \n[LANDFIRE PRS (Percent of Replacement-severity Fire) v1.2.0](/earth-engine/datasets/catalog/LANDFIRE_Fire_PRS_v1_2_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) Historical fire regimes, intervals, and vegetation conditions are mapped using ... \nLANDFIRE/Fire/PRS/v1_2_0, doi,fire,landfire,nature-conservancy,usda,usgs,vegetation,wildfire \n2010-01-01T00:00:00Z/2010-12-31T00:00:00Z \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_Fire_PRS_v1_2_0)"]]
