CoverType
For detailed information on how to query this data set and how layer file user views were derived go to Resource Details section in metadata for this file.CoverType is a photo-interpreted delineation of the Tongass National Forest by land type and timber cover type. Classification of lands was done sequentially: 1) land and water identified; 2) forested and non-forested areas were identified; 3) forested areas were classified by forest type and forest productivity; and 4) productive forest lands were further characterized by volume class, tree size, species composition. The original classifications were based on photo-interpretation of 1:15840 aerial photographs in 1978. The minimum map unit size is approximately 10 acres, though the average area for forested polygons is 60 acres. Additionally, CoverType is updated for new stands created through natural events or management activity. The data has also been corrected for errors, as found, that occurred during the attributing and digitizing of the original classification data.Data has been compiled for some lands in southeast Alaska outside National Forest System Ownership. Data collected outside NFS boundaries has been inconsistently collected and compiled and should not be used for data analysis..
[{'name': 'OBJECTID', 'type': 'esriFieldTypeOID', 'alias': 'OBJECTID', 'sqlType': 'sqlTypeOther', 'nullable': False, 'editable': False, 'domain': None, 'defaultValue': None}, {'name': 'TM_COMPARTMENT', 'type': 'esriFieldTypeInteger', 'alias': 'TM_COMP', 'sqlType': 'sqlTypeOther', 'nullable': True, 'editable': True, 'domain': {'type': 'range', 'name': 'TM_COMPARTMENT', 'mergePolicy': 'esriMPTDefaultValue', 'splitPolicy': 'esriSPTDuplicate', 'description': 'TM_COMP for Cover Type', 'range': [100, 86409]}, 'defaultValue': None}, {'name': 'STAND', 'type': 'esriFieldTypeInteger', 'alias': 'STAND', 'sqlType': 'sqlTypeOther', 'nullable': True, 'editable': True, 'domain': {'type': 'range', 'name': 'STAND', 'mergePolicy': 'esriMPTDefaultValue', 'splitPolicy': 'esriSPTDuplicate', 'description': 'STAND for Cover Type', 'range': [1, 99999]}, 'defaultValue': None}, {'name': 'FCT', 'type': 'esriFieldTypeString', 'alias': 'FCT', 'sqlType': 'sqlTypeOther', 'length': 1, 'nullable': True, 'editable': True, 'domain': {'type': 'codedValue', 'name': 'FCT', 'mergePolicy': 'esriMPTDefaultValue', 'splitPolicy': 'esriSPTDuplicate', 'description': 'Forest Cover Type for Cover Type', 'codedValues': [{'name': 'Forested', 'code': 'F'}, {'name': 'Non-forested', 'code': 'N'}]}, 'defaultValue': None}, {'name': 'NFCON', 'type': 'esriFieldTypeString', 'alias': 'NFCON', 'sqlType': 'sqlTypeOther', 'length': 1, 'nullable': True, 'editable': True, 'domain': {'type': 'codedValue', 'name': 'NFCON', 'mergePolicy': 'esriMPTDefaultValue', 'splitPolicy': 'esriSPTDefaultValue', 'description': 'Non-forest Condition Class for Cover Type', 'codedValues': [{'name': 'A-Alder brush', 'code': 'A'}, {'name': 'B-Brush', 'code': 'B'}, {'name': 'C-Freshwater - census', 'code': 'C'}, {'name': 'D-Sand dunes', 'code': 'D'}, {'name': 'F-River fill', 'code': 'F'}, {'name': 'G-Natural grassland', 'code': 'G'}, {'name': 'H-Alpine', 'code': 'H'}, {'name': 'I-Ice/snow field', 'code': 'I'}, {'name': 'L-Uplifted beach', 'code': 'L'}, {'name': 'M-Muskeg-meadow', 'code': 'M'}, {'name': 'N-Freshwater - noncensus', 'code': 'N'}, {'name': 'O-Other', 'code': 'O'}, {'name': 'P-Borrow pit', 'code': 'P'}, {'name': 'R-Rock', 'code': 'R'}, {'name': 'S-Recurrent slide', 'code': 'S'}, {'name': 'T-Willow', 'code': 'T'}, {'name': 'U-Urban/agricultural', 'code': 'U'}, {'name': 'W-Mass wasting', 'code': 'W'}]}, 'defaultValue': None}, {'name': 'FPROD', 'type': 'esriFieldTypeString', 'alias': 'FPROD', 'sqlType': 'sqlTypeOther', 'length': 1, 'nullable': True, 'editable': True, 'domain': {'type': 'codedValue', 'name': 'FPROD', 'mergePolicy': 'esriMPTDefaultValue', 'splitPolicy': 'esriSPTDefaultValue', 'description': 'Forest Productivity Class for Cover Type', 'codedValues': [{'name': '2-Productivity greater than 20 Cu. Ft./Acre', 'code': '2'}, {'name': 'A-Low productivity - Alder', 'code': 'A'}, {'name': 'G-Low productivity - Glacier', 'code': 'G'}, {'name': 'H-Low productivity - High elevation', 'code': 'H'}, {'name': 'L-Low productivity - Low site index', 'code': 'L'}, {'name': 'M-Low productivity - Muskeg', 'code': 'M'}, {'name': 'R-Low productivity - Rock cover', 'code': 'R'}, {'name': 'S-Low productivity - Recurrent slide zone', 'code': 'S'}, {'name': 'T-Low productivity - Willow', 'code': 'T'}, {'name': '9-Non-forest condition (use with FCT=N)', 'code': '9'}, {'name': 'Unknown productivity or private land', 'code': 'U'}]}, 'defaultValue': None}, {'name': 'FTYPE', 'type': 'esriFieldTypeString', 'alias': 'FTYPE', 'sqlType': 'sqlTypeOther', 'length': 1, 'nullable': True, 'editable': True, 'domain': {'type': 'codedValue', 'name': 'FTYPE', 'mergePolicy': 'esriMPTDefaultValue', 'splitPolicy': 'esriSPTDefaultValue', 'description': 'Forest Type (species canopy comp > 50%) for Cover Type', 'codedValues': [{'name': 'A-Red Alder', 'code': 'A'}, {'name': 'B-Birch', 'code': 'B'}, {'name': 'C-Cedar', 'code': 'C'}, {'name': 'H-Hemlock', 'code': 'H'}, {'name': 'L-Lodgepole pine', 'code': 'L'}, {'name': 'M-Black spruce', 'code': 'M'}, {'name': 'O-Other species', 'code': 'O'}, {'name': 'P-Black cottonwood (poplar)', 'code': 'P'}, {'name': 'Q-Aspen', 'code': 'Q'}, {'name': 'S-Spruce', 'code': 'S'}, {'name': 'W-White spruce', 'code': 'W'}, {'name': 'X-Hemlock-Spruce (SS between 30-49% canopy comp)', 'code': 'X'}, {'name': 'Z-Cottonwood w/Sitka spruce understory', 'code': 'Z'}]}, 'defaultValue': None}, {'name': 'CSC', 'type': 'esriFieldTypeString', 'alias': 'CSC', 'sqlType': 'sqlTypeOther', 'length': 1, 'nullable': True, 'editable': True, 'domain': {'type': 'codedValue', 'name': 'CSC', 'mergePolicy': 'esriMPTDefaultValue', 'splitPolicy': 'esriSPTDefaultValue', 'description': 'Current stocked condition for Cover Type', 'codedValues': [{'name': 'A-Non-stocked due to alder', 'code': 'A'}, {'name': 'B-Non-stocked due to brabazon', 'code': 'B'}, {'name': 'F-Non-stocked due to fire', 'code': 'F'}, {'name': 'G-Non-stocked due to water or glacier', 'code': 'G'}, {'name': 'I-Non-stocked due to insects', 'code': 'I'}, {'name': 'N-Non-stocked due to logging (> or = 5 years)', 'code': 'N'}, {'name': 'O-Non-stocked due to other causes', 'code': 'O'}, {'name': 'R-Non-stocked due to river fill', 'code': 'R'}, {'name': 'S-Non-stocked due to slides', 'code': 'S'}, {'name': 'T-Non-stocked due to willow', 'code': 'T'}, {'name': 'U-Non-stocked due to beach uplifting', 'code': 'U'}, {'name': 'W-Non-stocked due to wind throw', 'code': 'W'}, {'name': 'X-Non-stocked due to logging (< 5 years)', 'code': 'X'}, {'name': '1-Poorly stocked (1-39% crown closure)', 'code': '1'}, {'name': '2-Medium stocked (50-69% crown closure)', 'code': '2'}, {'name': '3-Well stocked (70-100% crown closure)', 'code': '3'}, {'name': '9-Non-forested', 'code': '9'}]}, 'defaultValue': None}, {'name': 'SSIZEC', 'type': 'esriFieldTypeString', 'alias': 'SSIZEC', 'sqlType': 'sqlTypeOther', 'length': 1, 'nullable': True, 'editable': True, 'domain': {'type': 'codedValue', 'name': 'SSIZEC', 'mergePolicy': 'esriMPTDefaultValue', 'splitPolicy': 'esriSPTDefaultValue', 'description': 'Stand size class for Cover Type', 'codedValues': [{'name': '1-Seedling or saplings (trees under 5" DBH)', 'code': '1'}, {'name': '2-Poletimber (trees w/DBH between 5" and 9")', 'code': '2'}, {'name': '3-Young-growth sawtimber (9"+ DBH, under 150 yrs old)', 'code': '3'}, {'name': '4-Old-growth with sawtimber (9"+ DBH, over 150 yrs old)', 'code': '4'}]}, 'defaultValue': None}, {'name': 'VOLC', 'type': 'esriFieldTypeString', 'alias': 'VOLC', 'sqlType': 'sqlTypeOther', 'length': 1, 'nullable': True, 'editable': True, 'domain': {'type': 'codedValue', 'name': 'VOLC', 'mergePolicy': 'esriMPTDefaultValue', 'splitPolicy': 'esriSPTDefaultValue', 'description': 'Volume class for Cover Type', 'codedValues': [{'name': '3- 0 to 8 MBF/acre', 'code': '3'}, {'name': '4- 9 to 20 MBF/acre', 'code': '4'}, {'name': '5- 20 to 30 MBF/acre', 'code': '5'}, {'name': '6- 30 to 50 MBF/acre', 'code': '6'}, {'name': '7- More than 50 MBF/acre', 'code': '7'}]}, 'defaultValue': None}, {'name': 'TTSOURCE', 'type': 'esriFieldTypeString', 'alias': 'TTSOURCE', 'sqlType': 'sqlTypeOther', 'length': 1, 'nullable': True, 'editable': True, 'domain': {'type': 'codedValue', 'name': 'TTSOURCE', 'mergePolicy': 'esriMPTDefaultValue', 'splitPolicy': 'esriSPTDefaultValue', 'description': 'Arc source on timtyp covers for Cover Type', 'codedValues': [{'name': 'Stand Exam Inventory', 'code': 'S'}, {'name': 'TM Inventory', 'code': 'T'}]}, 'defaultValue': None}, {'name': 'DATE_ORIGIN', 'type': 'esriFieldTypeInteger', 'alias': 'DATE_ORIGIN', 'sqlType': 'sqlTypeOther', 'nullable': True, 'editable': True, 'domain': {'type': 'range', 'name': 'DATE_ORIGIN', 'mergePolicy': 'esriMPTDefaultValue', 'splitPolicy': 'esriSPTDuplicate', 'description': 'Date in Oracle format YYYYMMDD', 'range': [17000101, 20991231]}, 'defaultValue': None}, {'name': 'STAND_ORIGIN', 'type': 'esriFieldTypeString', 'alias': 'STAND_ORIGIN', 'sqlType': 'sqlTypeOther', 'length': 1, 'nullable': True, 'editable': True, 'domain': {'type': 'codedValue', 'name': 'STAND_ORIGIN', 'mergePolicy': 'esriMPTDefaultValue', 'splitPolicy': 'esriSPTDefaultValue', 'description': 'Origin of the stand for Cover Type', 'codedValues': [{'name': 'A-Alluvial outwash', 'code': 'A'}, {'name': 'F-Fire', 'code': 'F'}, {'name': 'G-Glacial retreat (recent)', 'code': 'G'}, {'name': 'H-Harvest', 'code': 'H'}, {'name': 'L-Landslide', 'code': 'L'}, {'name': 'S-Small gap (old growth stage)', 'code': 'S'}, {'name': 'U-Unknown origin', 'code': 'U'}, {'name': 'W-Wind throw', 'code': 'W'}, {'name': '9-Null (lakes, rockpits, non-forested, etc)', 'code': '9'}, {'name': 'P-Permanent Land Clearing (power line, etc.)', 'code': 'P'}]}, 'defaultValue': None}, {'name': 'RESERVE_AMOUNT', 'type': 'esriFieldTypeSmallInteger', 'alias': 'RESERVE_AMOUNT', 'sqlType': 'sqlTypeOther', 'nullable': True, 'editable': True, 'domain': {'type': 'range', 'name': 'RESERVE_AMOUNT', 'mergePolicy': 'esriMPTDefaultValue', 'splitPolicy': 'esriSPTDuplicate', 'description': 'Reserve Amount for Activity Polygons  (use 999 for reserves with unknown amount)', 'range': [0, 999]}, 'defaultValue': None}, {'name': 'RESERVE_UOM', 'type': 'esriFieldTypeString', 'alias': 'RESERVE_UOM', 'sqlType': 'sqlTypeOther', 'length': 1, 'nullable': True, 'editable': True, 'domain': {'type': 'codedValue', 'name': 'RESERVE_UOM', 'mergePolicy': 'esriMPTDefaultValue', 'splitPolicy': 'esriSPTDuplicate', 'description': 'Reserve Unit of Measure for Activity Polygons', 'codedValues': [{'name': 'Trees per Acre', 'code': 'T'}, {'name': 'Percent Basal Area', 'code': 'B'}]}, 'defaultValue': 'B'}, {'name': 'TIMTYP', 'type': 'esriFieldTypeString', 'alias': 'TIMTYP', 'sqlType': 'sqlTypeOther', 'length': 7, 'nullable': True, 'editable': True, 'domain': None, 'defaultValue': None}, {'name': 'REV_DATE', 'type': 'esriFieldTypeDate', 'alias': 'REV_DATE', 'sqlType': 'sqlTypeOther', 'length': 8, 'nullable': True, 'editable': True, 'domain': None, 'defaultValue': None, 'precision': 1}, {'name': 'CREATED_USER', 'type': 'esriFieldTypeString', 'alias': 'CREATED_USER', 'sqlType': 'sqlTypeOther', 'length': 255, 'nullable': True, 'editable': False, 'domain': None, 'defaultValue': None}, {'name': 'CREATED_DATE', 'type': 'esriFieldTypeDate', 'alias': 'CREATED_DATE', 'sqlType': 'sqlTypeOther', 'length': 8, 'nullable': True, 'editable': False, 'domain': None, 'defaultValue': None, 'precision': 1}, {'name': 'LAST_EDITED_USER', 'type': 'esriFieldTypeString', 'alias': 'LAST_EDITED_USER', 'sqlType': 'sqlTypeOther', 'length': 255, 'nullable': True, 'editable': False, 'domain': None, 'defaultValue': None}, {'name': 'LAST_EDITED_DATE', 'type': 'esriFieldTypeDate', 'alias': 'LAST_EDITED_DATE', 'sqlType': 'sqlTypeOther', 'length': 8, 'nullable': True, 'editable': False, 'domain': None, 'defaultValue': None, 'precision': 1}, {'name': 'EDITORNAME', 'type': 'esriFieldTypeString', 'alias': 'EDITORNAME', 'sqlType': 'sqlTypeOther', 'length': 25, 'nullable': True, 'editable': True, 'domain': None, 'defaultValue': None}, {'name': 'FACTSID', 'type': 'esriFieldTypeString', 'alias': 'FACTSID', 'sqlType': 'sqlTypeOther', 'length': 10, 'nullable': True, 'editable': True, 'domain': None, 'defaultValue': None}, {'name': 'GLOBALID', 'type': 'esriFieldTypeGlobalID', 'alias': 'GLOBALID', 'sqlType': 'sqlTypeOther', 'length': 38, 'nullable': False, 'editable': False, 'domain': None, 'defaultValue': None}, {'name': 'Shape__Area', 'type': 'esriFieldTypeDouble', 'alias': 'Shape__Area', 'sqlType': 'sqlTypeDouble', 'nullable': True, 'editable': False, 'domain': None, 'defaultValue': None}, {'name': 'Shape__Length', 'type': 'esriFieldTypeDouble', 'alias': 'Shape__Length', 'sqlType': 'sqlTypeDouble', 'nullable': True, 'editable': False, 'domain': None, 'defaultValue': None}]
[{'name': 'PK__TNFCOVER__5242E632B3D83BE6', 'fields': 'objectid', 'isAscending': True, 'isUnique': True, 'description': '', 'indexType': 'Attribute'}, {'name': 'user_4481.TNFCOVERTYPESYNCENABLED_COVER_TYPE_Shape_sidx', 'fields': 'shape', 'isAscending': True, 'isUnique': False, 'description': '', 'indexType': 'Spatial'}, {'name': 'FDO_globalid', 'fields': 'globalid', 'isAscending': True, 'isUnique': True, 'description': '', 'indexType': 'Attribute'}, {'name': 'Shape__Area_Index', 'fields': 'Shape__Area', 'isAscending': True, 'isUnique': False, 'description': '', 'indexType': 'Attribute'}, {'name': 'Shape__Length_Index', 'fields': 'Shape__Length', 'isAscending': True, 'isUnique': False, 'description': '', 'indexType': 'Attribute'}, {'name': 'created_dateIndex', 'fields': 'created_date', 'isAscending': True, 'isUnique': False, 'description': 'created_date Field index', 'indexType': 'Attribute'}, {'name': 'created_userIndex', 'fields': 'created_user', 'isAscending': False, 'isUnique': False, 'description': 'created_user Field index', 'indexType': 'Attribute'}, {'name': 'last_edited_dateIndex', 'fields': 'last_edited_date', 'isAscending': True, 'isUnique': False, 'description': 'last_edited_date Field index', 'indexType': 'Attribute'}, {'name': 'last_edited_userIndex', 'fields': 'last_edited_user', 'isAscending': False, 'isUnique': False, 'description': 'last_edited_user Field index', 'indexType': 'Attribute'}]
{'renderer': {'type': 'simple', 'symbol': {'type': 'esriSFS', 'style': 'esriSFSSolid', 'color': [207, 208, 250, 255], 'outline': {'type': 'esriSLS', 'style': 'esriSLSSolid', 'color': [110, 110, 110, 255], 'width': 0.4}}, 'label': '', 'description': ''}, 'transparency': 0, 'labelingInfo': None}
[]
[{'name': 'CoverType', 'description': '', 'drawingTool': 'esriFeatureEditToolPolygon', 'prototype': {'attributes': {'FACTSID': None, 'EDITORNAME': None, 'TM_COMPARTMENT': None, 'STAND': None, 'FCT': None, 'NFCON': None, 'FPROD': None, 'FTYPE': None, 'CSC': None, 'SSIZEC': None, 'VOLC': None, 'TTSOURCE': None, 'DATE_ORIGIN': None, 'STAND_ORIGIN': None, 'RESERVE_AMOUNT': None, 'RESERVE_UOM': 'B', 'TIMTYP': None, 'REV_DATE': None}}}]