First, each Landsat image was delineated into regions in an unsupervised classification. Second, each region was assigned a land cover type label in a supervised classification. Regions classified as conifer cover types were also assigned labels for tree size class and canopy cover. A total of 36 land cover type classes, 5 tree size classes, and 5 conifer canopy cover classes were labeled across the sixteen scene area. Accuracies were estimated for the land cover type and tree size classifications of each Landsat image. Third, the regions from all sixteen Landsat images were edgematched together into the MTSILC3 database. Additionally, land cover types were re-classified in four scenes (P40R28, P39R28, P39R29, and part of P40R29) to separate out sagebrush canopy cover classes. Below is a description of how the original Landsat images were delineated into ground feature regions, how the regions were labeled to land cover type, tree size, and tree canopy, how the sixteen Landsat images were edgematched into one database and how the four Landsat imagers were re-classified for sagebrush.
Image Landsat Image-Date Project Covertype-Acc Treesize-Acc ------------------------------------------------------------------------------- P40R27 7 7/27/99 SILC3 69.8% 64.0% P40R28 5 7/26/96 SILC3 69.0% 57.1% P39R27 5 7/01/95 SILC3 73.5% 61.8% P39R28 5 6/28/94 SILC3 74.7% 69.6% P39R29 5 6/28/94 SILC3 75.7% 54.7% P38R27 5 7/12/96 SILC3 75.9% 55.9% P38R28 5 7/12/96 SILC3 74.6% 64.5% P38R29 5 7/12/96 SILC3 66.0% 57.9% P37R29 5 7/24/00 SILC3 64.9% 66.9% P35R28 7 8/25/99 SILC3 82.0% 45.9% P34R28 7 8/18/99 SILC3 82.5% 53.7%P40R29 5 7/31/92 SILC2 63.7% 57.8 P37R28 5 8/09/91 SILC2 57.8% 60.3 P36R28 5 6/15/91 SILC2 58.6% 67.5 P36R29 5 6/15/91 SILC2 56.7% 68.5 P34R29 5 6/17/91 SILC2 64.6% NOT CLASSIFIED
Each image was run through an unsupervised classification to classify the approximately 56 million pixels into 130-150 spectral classes. A potential natural vegetation (PVT) classification provided by Region One of the USDA Forest Service was included as a seed source in the SILC3 unsupervised classifications but was not used in SILC2. Using an iterative classification process with spectral signature files, each pixel was assigned to a spectral class. The pixels were then merged into regions (raster polygons) through a multi-stage merge algorithm using a variable minimum map unit based on heterogeneity of the surrounding pixels. In the SILC3 unsupervised classification, regions larger than 202.4 hectares were divided until all regions in the grid were less than 202.4 hectares (500 acres). The final unsupervised classification resulted in the creation of SILC3 regions ranging in size from 0.1 to 202.2 hectares and SILC2 regions from 0.4 to 2000 hectares. Each region was assigned a set of attributes for TM channels 1-5, and 7 (Landsat 7 images also have TM6 and Panchromatic band), along with elevation, aspect, and slope from 30 meter digital elevation model (DEM); these attribute values were calculated based on the mean values of the 30 meter pixels within each region.
Vegetation overstory (land cover type) was labeled using a supervised classification. The land cover type supervised classification was performed using a combination of manual and training data classifications. The following classes were manually labeled: urban, irrigated and non-irrigated agriculture, recently burned areas, water, mines, snow, and clouds. The other land cover types were labeled using training data and spatial classifiers. The training data were screened for data attribute accuracy, positional accuracy, and agreement with the imagery. Grassland training data was split into generalized cover classes based on MNDVI splits and then used in the classification. The land cover type labels were filled into the COVERTYPE field of each scenes region grid. NOTE: some of the SILC2 covertypes were grouped into more generalized SILC3 classes. Additionally, SILC3 did not have riparian classes separated from upland classes, the SILC2 riparian classes were recoded to the corresponding SILC3 classes. The original SILC2 codes are preserved in the database.
COVERTYPE ACRES DESCRIPTION ------------------------------------------------ 1100 170492.0 Urban or Developed Lands 2010 3841949.2 Agricultural - Dry 2020 5611054.5 Agricultural - Irrigated 3111 206033.2 Created Wheat Grass 3130 12974968.0 Very Low Cover Grasslands 3150 19489440.0 Low / Moderate Cover Grasslands 3170 2352818.0 Moderate / High Cover Grasslands 3610 3037673.5 Mesic Shrublands 3625 13376654.0 Sagebrush / Xeric Shrublands 3640 6487.6 Horizontal Juniper 3650 375041.4 Salt-Desert Shrub 4101 829757.8 Aspen 4150 1834481.8 Mixed Broadleaf / Cottonwood Forest 4203 4699825.0 Lodgepole Pine 4204 787828.6 Whitebark Pine 4205 484730.6 Limber Pine 4206 3078827.0 Ponderosa Pine 4212 4073484.2 Douglas-fir 4214 97077.5 Rocky Moutain Juniper 4215 65438.5 Western Larch 4216 95904.4 Utah Juniper 4223 1034961.7 Douglas-fir/Lodgepole Pine 4230 278958.9 Douglas-fir/Ponderosa Pine 4237 1451617.6 Subalpine Fir/Spruce 4241 557181.2 Mixed Upper Subalpine Conifer Forest 4242 1446327.1 Mixed Lower Subalpine Conifer Forest 4244 1714195.9 Mixed Xeric Conifer Forest 4400 1849794.0 Burns 5000 690445.8 Water 7300 2438629.5 Rock 7500 57622.6 Mines/Quarries 7601 879191.5 Grass Dominated Badlands 7602 805648.0 Shrub Dominated Badlands 9100 705801.1 Snow 9800 196698.2 Cloud 9900 185515.3 Cloud ShadowGrass MNDVI SPLITS: Scene 3130 3150 3170 ---------------------------------------------- P40R27 < 20 20-99 >= 100 * p40R28 < 10 10-84 >= 85 P39R27 < 35 35-134 >= 135 P39R28 < 27 27-124 >= 125 P39R29 < 26 26-118 >= 119 P38R27 < 18 18-102 >= 103 P38R28 < 18 18-102 >= 103 P38R29 < 18 18-102 >= 103 P37R29 < -20 -20-34 >= 35 * P35R28 < 4 4-22 >= 22 * P34R28 < 11 12-47 >= 48 *
P40R29 < 18 18-84 >= 85 P37R28 < 35 35-89 >= 90 P36R28 < 38 38-99 >= 100 P36R29 < 35 35-89 >= 90 P34R29 < 55 55-90 >= 90 * Indicates Landsat 7 image which tend to have lower MNDVI values
Conifer tree size and canopy cover labels were assigned using a training data classification. The training data were screened for data attribute accuracy, positional accuracy, and agreement with the imagery. In most of the canopy/size classifications there was a high level of disagreement between the training data tree canopy call (see accuracy assessment), and the imagery. In these scenes the tree canopy data was recoded based on MNDVI splits. The tree size labels were filled into the TREESIZE field and the tree canopy cover labels were filled into the TREECANOPY field of each scenes region grid.
TREESIZE DESCRIPTION ------------------------------------- 1 Sapling 1.0-4.9" DBH 2 Pole 5.0-8.9" DBH 3 Medium 9.0-14.9" DBH 4 Large 15.0-20.9" DBH 5 Very Large 21.0-99.0" DBHTREECANOPY DESCRIPTION ------------------------------------- 1 1-9% Cover 2 10-24% Cover 3 25-44% Cover 4 45-64% Cover 5 65-100% Cover
Tree Canopy Cover MNDVI Splits: Scene 1(1-9%) 2(10-24%) 3(25-44%) 4(45-64%) 5(>= 64%) ---------------------------------------------------------------- P40R27 MNDVI SPLITS NOT USED IN THIS SCENE * P40R28 < 110 110-199 200-264 265-324 >= 325 P39R27 < 125 125-179 180-224 225-274 >= 275 P39R28 < 125 125-184 185-234 235-309 >= 310 P39R29 < 115 115-179 180-234 235-279 >= 280 P38R27 < 115 115-179 180-234 235-284 >= 285 P38R28 < 115 115-179 180-234 235-284 >= 285 P38R29 < 115 115-179 180-234 235-284 >= 285 P37R29 < 10 10-49 50-84 85-124 >= 125 * P35R28 MNDVI SPLITS NOT USED IN THIS SCENE * P34R28 MNDVI SPLITS NOT USED IN THIS SCENE *
P40R29 < 80 80-119 120-179 180-234 >= 234 P37R28 < 115 115-179 180-234 235-324 >= 325 P36R28 < 115 115-179 180-234 235-279 >= 280 P36R29 < 115 115-179 180-235 235-300 >= 300 P34R29 NOT CLASSIFIED * Indicates Landsat 7 image which tend to have lower MNDVI values
A cross validation (leave-one-out), accuracy assessment for land cover type and tree size of each scene was performed using the entire training data set. No estimate of accuracy was performed on the manually classified land cover types.
Edgematching was done by selecting regions from only one of the scenes in overlap areas. First, the imagery was visually analyzed to select cloud free or snow free areas in overlap zones. Next, the images were ranked based on overall image quality. Finally, after the land cover type classification, regions were selected that created a consistant covertype pattern across the transition zone from one scene to another. The end result was a region grid with 8,615,947 regions.
Image Landsat Image-Date Priority No. Regions Used ------------------------------------------------------------- P40R27 7 7/27/99 1 754,813 P40R28 5 7/26/96 2 579,919 P39R27 5 7/01/95 3 290,811 P39R28 5 6/28/94 4 315,795 P39R29 5 6/28/94 5 354,682 P37R29 7 7/24/00 6 565,625 P38R27 5 7/12/96 7 678,683 P38R28 5 7/12/96 8 597,006 P38R29 5 7/12/96 9 409,363 P34R28 7 8/18/99 10 843,521 P35R28 7 8/25/99 11 699,600 P40R29 5 7/31/92 12 438,906 P37R28 5 8/09/91 13 274,857 P36R28 5 6/15/91 14 454,457 P36R29 5 6/15/91 15 542,208 P34R29 5 6/17/91 16 815,701 ------------------------------------------------------------- Total Regions in Database 8,615,947
Sagebrush canopy cover classes were added in a re-classification of land cover type for P40R28, P39R29, P39R28, and for only the portion of P40R29 occuring within the state of Montana. First the Sagebrush / Xeric Shrublands (3625) type was removed form the training data set. Then the following land covertype classes were added to the training data set:
COVERTYPE DESCRIPTION ------------------------------------------------ 3301 Mountain Mahogany 3380 Low Cover Sagebrush / Xeric Shrublands (15-24% shrubs) 3390 Moderate Cover Sagebrush / Xeric Shrublands (25-34% shrubs) 3395 High Cover Sagebrush / Xeric Shrublands (>= 35% shrubs) 3550 Very Low Cover Sagebrush / Xeric Shrublands (5-14% shrubs/10-24% grass) 3560 Very Low Cover Sagebrush / Xeric Shrublands (5-14% shrubs/>= 25% grass)
A new classification was run for each of the four scenes using the original SILC3 or SILC2 training data sets with additional training data added in each of the above Sagebrush types. The new sagebrush cover type classifications were filled into the BLMCOVERTYPE attribute in the database. An accuracy assessment was also performed for each scene (see accuracy assessment).
To help track similarities and differences in map legends between this classification and previous ones (SILC1 and MT-GAP) cover type names and codes numbers were not changed if the actual types were mapped using similar training data. Please see the individual scene report documents for further details.
SILC3 scene users accuracies of land cover types were: CODE P40R27 P39R27 P38R27 P40R28 P39R28 P38R28 P39R29 P38R29 P37R29 P35R28 P34R28 --------------------------------------------------------------------------------- 3111 NA NA NA NA NA NA NA NA NA 40.0 34.3 3130 80.4 71.4 71.0 62.9 90.4 66.7 77.2 59.0 74.4 79.1 80.5 3150 81.2 82.6 93.6 77.3 84.1 87.6 90.4 81.0 80.3 71.5 88.7 3170 65.4 68.3 49.1 79.3 82.1 76.9 92.4 71.0 79.0 74.6 66.8 3610 69.9 42.7 66.8 62.3 61.2 68.3 72.4 67.3 69.8 74.3 49.1 3625 54.4 86.0 80.7 75.5 57.4 69.3 80.7 74.8 50.5 63.3 33.3 3640 NA NA NA NA NA NA NA NA NA NA 32.5 3650 NA NA NA NA NA NA NA NA NA NA NA 4101 68.3 75.9 46.3 68.9 68.2 68.5 71.9 76.0 57.9 NA NA 4150 88.1 81.3 91.2 78.3 80.5 90.6 98.6 45.1 67.0 77.4 71.5 4203 67.6 80.6 67.7 70.3 65.9 70.1 67.6 72.5 46.8 NA NA 4204 54.5 43.8 61.8 74.0 90.5 59.6 75.0 52.2 60.8 NA NA 4205 88.9 46.7 66.7 NA 78.3 55.9 NA 85.7 63.6 NA NA 4206 58.0 43.2 93.0 59.6 52.0 74.4 NA 75.0 51.5 95.4 92.9 4212 77.9 75.6 69.7 71.7 83.9 79.3 79.3 63.4 70.8 NA NA 4214 NA NA NA NA 62.9 NA NA NA NA 90.1 86.7 4215 48.0 NA NA NA NA NA NA NA NA NA NA 4216 NA NA NA NA NA NA NA NA 45.2 NA NA 4223 48.0 74.8 43.4 48.8 67.3 44.7 44.4 48.4 36.1 NA NA 4230 57.1 41.3 34.6 50.5 68.1 41.2 NA NA NA NA NA 4237 57.1 26.7 37.4 49.3 65.0 50.4 41.7 57.6 48.9 NA NA 4240 49.8 34.7 30.0 47.8 68.2 49.3 30.8 57.6 44.3 NA NA 7300 94.6 92.6 95.3 99.1 96.0 99.4 99.4 97.8 92.9 86.4 75.0 7601 NA NA NA NA NA NA NA NA NA 66.1 84.2 7602 NA NA NA NA NA NA NA NA NA 75.7 83.3 --------------------------------------------------------------------------------- Total 69.8 73.5 75.9 69.0 74.7 74.6 75.7 66.0 64.9 82.0 82.8SILC2 scene users accuracies of land cover types were: CODE P40R29 P37R28 P36R28 P36R29 P34R29 ---------------------------------------- 3111 NA NA NA NA NA 3130 NA 51.9 48.6 78.0 84.3 3150 40.7 72.9 67.0 75.6 64.4 3170 45.8 31.1 25.7 33.1 44.6 3610 51.8 35.8 59.3 68.0 41.8 3625 82.7 53.6 48.6 54.4 73.2 3640 NA NA NA NA NA 3650 NA NA NA NA 92.5 4101 14.9 16.0 NA NA 53.4 4150 47.7 51.3 31.1 43.3 84.8 4203 59.3 27.8 NA 27.7 NA 4204 NA NA NA NA NA 4205 51.6 35.1 NA NA NA 4206 81.7 24.9 93.1 86.2 92.8 4212 68.1 52.1 NA 58.9 NA 4214 NA NA NA NA NA 4215 NA NA NA NA NA 4216 NA NA NA 10.0 NA 4223 40.8 36.6 NA 25.2 NA 4230 NA NA NA NA NA 4237 NA 37.7 NA 17.9 NA 4240 47.9 40.3 46.9 47.8 64.0 7300 62.4 32.7 54.0 NA 65.9 7601 NA 62.1 67.6 27.7 56.1 7602 NA 45.6 82.7 27.7 66.3 ---------------------------------------- Total 63.7 57.8 58.6 56.7 64.6
SILC3 scene users accuracies of conifer tree size classes (1-5) were: CODE P40R27 P39R27 P38R27 P40R28 P39R28 P38R28 P39R29 P38R29 P37R29 P35R28 P34R28 --------------------------------------------------------------------------------- Sapl 64.7 61.4 55.5 46.3 17.9 57.0 47.1 57.9 58.0 0.0 82.7 Pole 50.4 60.2 58.4 60.6 82.3 65.2 54.2 59.8 68.4 42.0 55.9 Med 59.4 64.6 51.3 65.1 79.1 67.5 60.1 60.3 67.7 47.4 54.3 Large 70.2 40.7 72.7 51.1 25.7 42.1 23.5 41.9 0.0 46.4 34.5 Vlge 46.5 13.3 10.0 13.8 12.1 18.2 28.6 12.5 NA NA NA --------------------------------------------------------------------------------- Total 64.0 61.8 55.9 57.1 69.6 64.5 54.7 57.9 66.9 45.9 53.7
SILC2 scene users accuracies of conifer tree size classes (1-5) were: CODE P40R29 P37R28 P36R28 P36R29 P34R29 ---------------------------------------------------------------------- Sapl 0.0 44.8 NA 40.0 NOT CLASSIFIED Pole 57.8 60.9 54.4 62.8 NOT CLASSIFIED Med 62.6 64.4 70.1 75.0 NOT CLASSIFIED Large 53.1 22.2 63.8 27.3 NOT CLASSIFIED Vlge 55.7 NA NA NA NOT CLASSIFIED --------------------------------------------------------------------------------- Total 57.8 60.3 67.5 68.5
Sagebrush re-classification users accuracies: CODE P40R28 P39R28 P39R29 (P40R29 in Montana) ------------------------------------- 3130 81.9 83.2 82.0 61.1 3150 88.7 80.9 92.1 76.1 3170 78.6 81.0 82.7 66.3 3301 84.0 75.7 NA 44.8 3380 40.2 38.8 38.2 40.5 3390 28.7 71.6 38.9 18.4 3395 48.3 36.8 48.7 29.0 3550 48.3 44.1 48.7 38.5 3560 33.3 33.3 17.6 18.7 3610 75.2 80.7 63.0 61.7 4101 81.0 79.2 75.8 61.5 4150 80.0 86.0 97.3 99.9 4203 76.2 78.8 75.1 59.3 4204 73.6 92.5 87.5 NA 4205 NA 70.8 NA 51.6 4206 79.1 71.4 NA 81.7 4212 79.7 93.7 87.4 68.1 4214 NA 72.4 NA NA 4223 61.0 79.5 16.7 40.8 4230 63.6 79.2 NA NA 4237 58.9 61.9 55.9 NA 4240 55.8 77.6 53.3 47.9 7300 99.2 99.4 98.4 96.7 ------------------------------------- Total 72.2 80.7 72.1 58.9
MAKE_DEM: extracted a digital elevation model (DEM) from the WSAL database for use during labeling.
MAKE_HYDROGRAPHY: extracted a hydrography coverage from the WSAL hydrography database for use during labeling.
BUILD_VAT: built an ArcInfo value attribute table (VAT) to hold all items (fields) for which descriptive data could be developed for each region. Filled in VALUE, COUNT, LINK, HECTARES, PERIMETER, TM1, TM2, TM3, TM4, TM5, (TM6), TM7, MNDVI, ELE, SLP, ASP, and SLPASP fields. SILC3 scenes had additional attributes filled: TM1STD, TM2STD, TM3STD, TM4STD, TM5STD, (TM6STD), TM7STD, (PAN, and PANSTD).
The SILC3 Mixed Conifer type 4240 was recoded to 3 types using an aml based on the PVTCODE and ELEVATION for the region. The 3 types are:
4241 Mixed Upper Subalpine Conifer Forest 4242 Mixed Lower Subalpine Conifer Forest 4244 Mixed Xeric Conifer Forest
Some SILC2 Grassland types were recoded to the SILC3 Grassland types using MNDVI value splits:Scene 3130 3150 3170 ---------------------------------------------- P40R29 < 18 18-84 >= 85 P37R28 < 35 35-89 >= 90 P36R28 < 38 38-99 >= 100 P36R29 < 35 35-89 >= 90 P34R29 < 55 55-90 >= 90
Three SILC2 Land Cover Types could not be recoded, instead the COV_CODE_2 field recoded value was filled into the COVERTYPE field.
SILC2 Land Cover Type Recode Table to SILC3 Land Cover Types SILC2 Name SILC3 Name ------------------------------------------------------------ 3100 Upland Grasslands * see Grass MNDVI recode table 3110 Altered Herbaceous * see Grass MNDVI recode table 3140 Low/Moderate Cover Grasslands * see Grass MNDVI recode table 3160 Moderate/High Cover Grasslands * see Grass MNDVI recode table 3180 Montane Parks/Subalpine Meadows * see Grass MNDVI recode table 6210 Graminoid and Forb Riparian * see Grass MNDVI recode table 6212 Cattail Marshes * see Grass MNDVI recode table 3111 Created Wheat Grass 3111 Created Wheat Grass 3130 Very Low Cover Grasslands 3130 Very Low Cover Grasslands 3150 Low/Moderate Cover Grasslands 3150 Low/Moderate Cover Grasslands 3170 Moderate/High Cover Grasslands 3170 Moderate/High Cover Grasslands3210 Mixed Mesic Shrubs 3610 Mixed Mesic Shrubs 3510 Mesic Shrub-Grassland Assoc. 3610 Mixed Mesic Shrubs 6140 Mixed Broadleaf/Shrub Riparian 3610 Mixed Mesic Shrubs 6310 Shrub Riparian 3610 Mixed Mesic Shrubs 6313 Willow Dominated Riparian 3610 Mixed Mesic Shrubs
3300 Mixed Xeric Shrubs 3625 Sagebrush/Xeric Shrublands 3301 Mountain Mahogany 3625 Sagebrush/Xeric Shrublands 3309 Silver Sage 3625 Sagebrush/Xeric Shrublands 3310 Salt-Desert Shrub (P34R29 only) 3625 Sagebrush/Xeric Shrublands 3311 Bitterbrush 3625 Sagebrush/Xeric Shrublands 3318 Shadescale (P40R29 only) 3625 Sagebrush/Xeric Shrublands 3350 Sagebrush 3625 Sagebrush/Xeric Shrublands 3351 Mountain Big Sage 3625 Sagebrush/Xeric Shrublands 3352 Wyoming Big Sage 3625 Sagebrush/Xeric Shrublands 3353 Basin Big Sage 3625 Sagebrush/Xeric Shrublands 3354 Black Sagebrush (P40R29 only) 3625 Sagebrush/Xeric Shrublands 3355 Low Sagebrush (P40R29 only) 3625 Sagebrush/Xeric Shrublands 3356 Tri-tip Sagebrush (P40R29 only) 3625 Sagebrush/Xeric Shrublands 3360 Black Sagebrush/Low Sagebrush 3625 Sagebrush/Xeric Shrublands 3361 Black Sagebrush 3625 Sagebrush/Xeric Shrublands 3362 Low Sagebrush 3625 Sagebrush/Xeric Shrublands 3520 Xeric Shrub-Grassland Assoc 3625 Sagebrush/Xeric Shrublands
3530 Forest-Grassland Assoc. 4244 Mixed Xeric Conifer Forest 4010 Low Density Xeric Forest 4244 Mixed Xeric Conifer Forest 4020 Low Density Xeric Forest 4244 Mixed Xeric Conifer Forest
4101 Aspen 4101 Aspen 4106 Green Ash 4150 Mixed Broadleaf / Cottonwood Forest 4140 Mixed Broadleaf Forest 4150 Mixed Broadleaf / Cottonwood Forest 6120 Broadleaf Riparian 4150 Mixed Broadleaf / Cottonwood Forest 6130 Mixed Broadleaf/Conifer Riparian 4150 Mixed Broadleaf / Cottonwood Forest
4201 Spruce Forest 4237 Subalpine Fir/Spruce 4203 Lodgepole Pine 4203 Lodgepole Pine 4204 Whitebark Pine 4204 Whitebark Pine 4205 Limber Pine 4205 Limber Pine 4206 Ponderosa Pine 4206 Ponderosa Pine 4208 Subalpine Fir 4237 Subalpine Fir/Spruce 4212 Douglas-fir 4212 Douglas-fir 4214 Rocky Mountain Juniper 4214 Rocky Mountain Juniper 4215 Western Larch 4215 Western Larch 4216 Utah Juniper 4216 Utah Juniper 4223 Douglas-fir/Lodgepole Pine 4223 Douglas-fir/Lodgepole Pine 4260 Mixed Whitebark Pine Forest 4241 Mixed Upper Subalpine Conifer Forest 4270 Mixed Subalpine Forest 4242 Mixed Lower Subalpine Conifer Forest 4290 Mixed Xeric Forest 4244 Mixed Xeric Conifer Forest
7301 Rock 7300 Rock 7800 Barren 7300 Rock
7601 Grass Dominated Badlands 7601 Grass Dominated Badlands 7602 Shrub Dominated Badlands 7602 Shrub Dominated Badlands
4300 Mixed Broadleaf and Conifer * used COV_CODE_2 6110 Conifer Riparian * used COV_CODE_2 7600 Badlands * if COV_CODE_2 was Grass type then then 7601 else 7602
Scene 1(1-9%) 2(10-24%) 3(25-44%) 4(45-64%) 5(>= 65%) ---------------------------------------------------------------- P40R27 MNDVI SPLITS NOT USED IN THIS SCENE * P40R28 < 110 110-199 200-264 265-324 >= 325 P39R27 < 125 125-179 180-224 225-274 >= 275 P39R28 < 125 125-184 185-234 235-309 >= 310 P39R29 < 115 115-179 180-234 235-279 >= 280 P38R27 < 115 115-179 180-234 235-284 >= 285 P38R28 < 115 115-179 180-234 235-284 >= 285 P38R29 < 115 115-179 180-234 235-284 >= 285 P37R29 < 10 10-49 50-84 85-124 >= 125 * P35R28 MNDVI SPLITS NOT USED IN THIS SCENE * P34R28 MNDVI SPLITS NOT USED IN THIS SCENE *P40R29 < 80 80-119 120-179 180-234 >= 234 P37R28 < 115 115-179 180-234 235-324 >= 325 P36R28 < 115 115-179 180-234 235-279 >= 280 P36R29 < 115 115-179 180-235 235-300 >= 300 P34R29 NOT CLASSIFIED * Indicates Landsat 7 image which tend to have lower MNDVI values
CREATE CAN-SIZE CODE: A combined conifer canopy/sizeclass code was developed by multiplying the conifer canopy code by 100 and then adding the conifer sizeclass code. Thus for a plot with conifer canopy 2 (low cover - from above recode) and conifer sizeclass 3 (medium) the combined code would be:
(2 * 100) + 3 = 203
A total of 25 different conifer canopy/sizeclass codes were developed.
COVERTYPE DESCRIPTION ------------------------------------------------ 1100 Urban or Developed Lands 2010 Agricultural - Dry 2020 Agricultural - Irrigated 3111 Created Wheat Grass 3130 Very Low Cover Grasslands 3150 Low / Moderate Cover Grasslands 3170 Moderate / High Cover Grasslands 3610 Mesic Shrublands 3625 Sagebrush / Xeric Shrublands 3640 Horizontal Juniper 3650 Salt-Desert Shrub 4101 Aspen 4150 Mixed Broadleaf / Cottonwood Forest 4203 Lodgepole Pine 4204 Whitebark Pine 4205 Limber Pine 4206 Ponderosa Pine 4212 Douglas-fir 4214 Rocky Moutain Juniper 4215 Western Larch 4216 Utah Juniper 4223 Douglas-fir/Lodgepole Pine 4230 Douglas-fir/Ponderosa Pine 4237 Subalpine Fir/Spruce 4241 Mixed Upper Subalpine Conifer Forest 4242 Mixed Lower Subalpine Conifer Forest 4244 Mixed Xeric Conifer Forest 4400 Burns 5000 Water 7300 Rock 7500 Mines/Quarries 7601 Mesic Shrub Dominated Badlands 7602 Xeric Shrub Dominated Badlands 9100 Snow 9800 Cloud 9900 Cloud Shadow
COVERTYPE DESCRIPTION ------------------------------------------------ -1 Region Not Re-classified 1100 Urban or Developed Lands 2010 Agricultural - Dry 2020 Agricultural - Irrigated 3111 Created Wheat Grass 3130 Very Low Cover Grasslands 3150 Low / Moderate Cover Grasslands 3170 Moderate / High Cover Grasslands 3380 Low Cover Sagebrush / Xeric Shrublands (15-24% shrubs) 3390 Moderate Cover Sagebrush / Xeric Shrublands (25-34% shrubs) 3395 High Cover Sagebrush / Xeric Shrublands (>= 35% shrubs) 3550 Very Low Cover Sagebrush / Xeric Shrublands (5-14% shrubs/10-24% grass) 3560 Very Low Cover Sagebrush / Xeric Shrublands (5-14% shrubs/>= 25% grass) 3610 Mesic Shrublands 4101 Aspen 4150 Mixed Broadleaf / Cottonwood Forest 4203 Lodgepole Pine 4204 Whitebark Pine 4205 Limber Pine 4206 Ponderosa Pine 4212 Douglas-fir 4214 Rocky Moutain Juniper 4215 Western Larch 4216 Utah Juniper 4223 Douglas-fir/Lodgepole Pine 4230 Douglas-fir/Ponderosa Pine 4237 Subalpine Fir/Spruce 4241 Mixed Upper Subalpine Conifer Forest 4242 Mixed Lower Subalpine Conifer Forest 4244 Mixed Xeric Conifer Forest 4400 Burns 5000 Water 7300 Rock 7500 Mines/Quarries 9100 Snow 9800 Cloud 9900 Cloud Shadow
TREESIZE DESCRIPTION ------------------------------------- -1 NOT CONIFER 1 Sapling 1.0-4.9" DBH 2 Pole 5.0-8.9" DBH 3 Medium 9.0-14.9" DBH 4 Large 15.0-20.9" DBH 5 Very Large 21.0-99.0" DBH
TREECANOPY DESCRIPTION ------------------------------------- -1 NOT CONIFER 1 1-9% Cover 2 10-24% Cover 3 25-44% Cover 4 45-64% Cover 5 65-100% Cover
ASP Description -------------------- 0 Flat 1 North 2 Northeast 3 East 4 Southeast 5 South 6 Southwest 7 West 8 Northwest
COV_CODE_1 SILC DESCRIPTION ------------------------------------------------ 3100 2 Upland Grasslands 3110 2 Altered Herbaceous 3111 3 Created Wheat Grass 3130 2 & 3 Very Low Cover Grasslands 3140 2 Low/Moderate Cover Grasslands 3150 2 & 3 Low/Moderate Cover Grasslands 3160 2 Moderate/High Cover Grasslands 3170 2 & 3 Moderate/High Cover Grasslands 3180 2 Montane Parks/Subalpine Meadows 3210 2 Mixed Mesic Shrubs 3300 2 Mixed Xeric Shrubs 3301 2 Mountain Mahogany 3309 2 Silver Sage 3310 2 Salt-Desert Shrub (P34R29 only) 3311 2 Bitterbrush 3318 2 Shadescale (P40R29 only) 3350 2 Sagebrush 3351 2 Mountain Big Sage 3352 2 Wyoming Big Sage 3353 2 Basin Big Sage 3354 2 Black Sagebrush (P40R29 only) 3355 2 Low Sagebrush (P40R29 only) 3356 2 Tri-tip Sagebrush (P40R29 only) 3360 2 Black Sagebrush/Low Sagebrush 3361 2 Black Sagebrush 3362 2 Low Sagebrush 3370 3 Low Cover Sagebrush 5-24% 3390 3 Mod/High Cover Sagebrush >= 25% 3510 2 Mesic Shrub-Grassland Assoc. 3520 2 Xeric Shrub-Grassland Assoc 3530 2 Forest-Grassland Assoc. 3610 3 Mixed Mesic Shrubs 3625 3 Sagebrush/Xeric Shrublands 3640 3 Horizontal Juniper 4010 2 Low Density Xeric Forest 4020 2 Low Density Xeric Forest 4101 2 & 3 Aspen 4106 2 Green Ash 4140 2 Mixed Broadleaf Forest 4150 3 Mixed Broadleaf / Cottonwood Forest 4201 2 Spruce Forest 4203 2 & 3 Lodgepole Pine 4204 2 & 3 Whitebark Pine 4205 2 & 3 Limber Pine 4206 2 & 3 Ponderosa Pine 4208 2 & 3 Subalpine Fir 4212 2 & 3 Douglas-fir 4214 2 & 3 Rocky Mountain Juniper 4215 2 & 3 Western Larch 4216 2 & 3 Utah Juniper 4223 2 & 3 Douglas-fir/Lodgepole Pine 4230 3 Douglas-fir//Ponderosa Pine 4237 3 Subalpine Fir/Spruce 4240 3 Mixed Conifer Forest 4260 2 Mixed Whitebark Pine Forest 4261 3 Low Cover Ponerosa Pine (P35R28 & P34R28) 4262 3 Mod Cover Ponerosa Pine (P35R28 & P34R28) 4263 3 High Cover Ponerosa Pine (P35R28 & P34R28) 4270 2 Mixed Subalpine Forest 4290 2 Mixed Xeric Forest 4300 2 Mixed Broadleaf and Conifer Forest 4400 2 Recent Burns 5000 2 Water 6110 2 Conifer Riparian 6120 2 Broadleaf Riparian 6130 2 Mixed Broadleaf and Conifer Riparian 6140 2 Mixed Broadleaf and Shrub Riparian 6210 2 Graminoid and Forb Riparian 6212 2 Cattail Marshes 6310 2 Shrub Riparian 6313 2 Willow Dominated Riparian 7300 2 & 3 Rock 7301 2 Rock 7600 2 Badlands 7601 2 & 3 Grass Dominated Badlands 7602 2 & 3 Shrub Dominated Badlands 7800 2 Barren
MANLABEL DESCRIPTION -------------------------------- 1100 Urban or Developed Lands 2010 Agricultural - Dry 2020 Agricultural - Irrigated 4400 Burns 5000 Water 7500 Mines/Quarries 9100 Snow 9800 Cloud 9900 Cloud Shadow
TREESIZE DESCRIPTION ------------------------------------- 1 Sapling 1.0-4.9" DBH 2 Pole 5.0-8.9" DBH 3 Medium 9.0-14.9" DBH 4 Large 15.0-20.9" DBH 5 Very Large 21.0-99.0" DBH
TREECANOPY DESCRIPTION ------------------------------------- 1 1-9% Cover 2 10-24% Cover 3 25-44% Cover 4 45-64% Cover 5 65-100% Cover
LIFEFORM DESCRIPTION --------------------- A Agriculture G Grass / Forb N Not applicable S Shrubland T Forest
PVTCODE DESCRIPTION ---------------------------------------------------------- 0 no pvt code assigned 1 abla1 (lower elevation subalpine fir type) 2 abla2 (high elevation subalpine fir type) 3 junipe 4 laly (alpine larch) 5 pial (whitebark pine type) 6 picea (spruce type) 7 pincon (lodgepole pine) 8 pifl (limber pine type) 9 pinpon (ponderosa pine) 10 poptre (cottonwood) 11 psemen (Douglas-fir type) 12 agric (agriculture type) 13 agrsmi 14 alpgrass (alpine grasslands type) 15 drygrass (xeric, valley bottom or foothills grassland type) 16 fesida (Idaho fescue type) 17 fessca (rough fescue type) 18 ripgrass (riparian grass type) 19 rock (rock dominated type) 20 bigsage (big sagebrush type) 21 dryshrub (non-sagebrush xeric shrub type) 22 messhrub 23 potfru (shrubby cinquefoil type) 24 rhusx 25 ripshrub (riparian shrub type) 27 urban 28 water 29 ripdecid (r1 westside broadleaf riparian) 33 pial/laly (r1 westside whitebark pine & alpine larch combined)
NOTE: by adding an item to the database called SCENEVALUE 4 10 b you could then calculate the actual scene value by subtracting the millionth number off of the SCENEPOLY_ID. Then you could use a LINK relate back to the original scene database which is much faster than an ordered relate based on the SCENEPOLY_ID field.
Example for P40R28: SCENEVALUE = SCENEPOLY_ID - 50000000 relate add z4028 p40r28z.vat info scenevalue value link ro
SCENE RANGE ------------------------------ P40R27 49000001 to < 50000000 P40R28 50000001 to < 51000000 P39R27 51000001 to < 52000000 P39R28 52000001 to < 53000000 P39R29 53000001 to < 54000000 P38R27 54000001 to < 55000000 P38R28 55000001 to < 56000000 P38R29 56000001 to < 57000000 P37R29 57000001 to < 58000000 P35R28 61000001 to < 63000000 P34R28 60000001 to < 61000000P40R29 9000001 to < 10000000 P37R28 29000001 to < 30000000 P36R28 34000001 to < 35000000 P36R29 35000001 to < 36000000 P34R29 42000001 to < 43000000
SCENENAME ---------- p40r28 p40r29 p40r29 p39r27 p39r28 p39r29 p38r27 p38r28 p38r29 p37r28 p37r29 p36r28 p36r29 p35r28 p34r28 p34r29