CANADA LAND INVENTORY LEVEL-II UTM DIGITAL DATA CLI LAND USE (circa 1966) 1. Coverage Specifications Original Map Scale: 1:250,000, except for British Columbia where the original scale was 1:125,000 Resolution : originally .00024412 of a degree which corresponds to approximately 25 meters Map Projection : Universal Transverse Mercator (UTM) Datum : NAD27 Spheroid : Clarke 1866 Units of Measure : meters 2. CLI Level II UTM Digital Data Enhancements CLI Level II UTM digital data have undergone the following transformation from their original Level I representation: a) The data are fully integrated with the corresponding CLI shoreline layer, i.e. the CLI polygons are no longer extended into the water. b) The data are projected to UTM. c) A secondary attribute Component Table (CMP.DBF) is included and compatible with the ArcView Component Table Extension developed by Agriculture Canada. Note(s): i) The CLI shoreline is based on older edition topographic base maps which may no longer be current. ii) Strict adherence to the 6-degree UTM zone convention has been made during the projection of the data to UTM, i.e.: Zone 22 - all maps East of 54 W. Longitude Zone 21 - all maps between 54 and 60 W. Longitude Zone 20 - all maps between 60 and 66 W. Longitude Zone 19 - all maps between 66 and 72 W. Longitude Zone 18 - all maps between 72 and 78 W. Longitude Zone 17 - all maps between 78 and 84 W. Longitude Zone 16 - all maps between 84 and 90 W. Longitude Zone 15 - all maps between 90 and 96 W. Longitude Zone 14 - all maps between 96 and 102 W. Longitude Zone 13 - all maps between 102 and 108 W. Longitude Zone 12 - all maps between 108 and 114 W. Longitude Zone 11 - all maps between 114 and 120 W. Longitude Zone 10 - all maps between 120 and 126 W. Longitude Zone 09 - all maps West of 126 W. Longitude DO NOT ATTEMPT TO PROCESS OR VIEW DATA ACROSS UTM ZONES. iii) In the process of integrating the CLI shoreline with these data, every attempt has been made to conserve the look and contents of the printed CLI maps. To this end, a restricted small area dissolve procedure has been applied to the overlay results. We apologize if any of these small areas persists, or if small areas have been eliminated as a result of this procedure. iv) To reduce file sizes and the time for download, a mild coordinate reduction has been applied to the original lat/lon data before projection to UTM. 3. Attribute Schema (Polygon Attribute Table - PAT.DBF) a) Standard ArcInfo Polygon Attribute Table (PAT) variables: AREA Num 13,6 Area, in square meters PERIMETER Num 13,6 Perimeter, in meters COVER_# Num 11,0 Standard ArcInfo Polygon Number COVER_ID Num 11,0 Standard ArcInfo User ID b) Component Table Extension Pointer CMP_Index Char 10 Unique polygon identification code for the secondary Component Table (CMP.DBF). c) Original Digital Data Classification: Use_A Char 1 The primary and/or dominant land use code Percent_A Char 1 The proportion (% base 10) of the polygon in Use_A (blank = 100%) Subclass_A Char 1 The subclass code for Use_A Use_B Char 1 The secondary land use code Percent_B Char 1 The proportion (% base 10) of the polygon in Use_B (blank = 0%) Subclass_B Char 1 The subclass code for Use_B Use_C Char 1 The tertiary land use code Percent_C Char 1 The proportion (% base 10) of the polygon in Use_C (blank = 0%) Subclass_C Char 1 The subclass code for Use_C 4. Component Table Attribute Schema (CMP.DBF) CMP_Index Char 10 Polygon identification code CMP Num 1,0 Component Number (1..3) Percent Num 3,0 Percentage (base 100) of the component Use Char 1 CLI Land Use Code Subclass Char 1 CLI Land Use Subclass Note(s): i) This table creates a "many-to-one" relationship with the Polygon Attribute Table (PAT.DBF) and should not be utilized in ArcView without the Component Table Extension provided by Agriculture and Agri-Food Canada. ii) The Component Table Extension for ArcView can be obtained via FTP from: ftp://res.agr.ca/CANSIS/TOOLS/ct_map_1.3.avx 5. Valid CLI Land Use Codes B - Urban built-up area E - Mines, quarries, sand and gravel pits O - Outdoor recreation H - Horticulture G - Orchards and vineyards A - Cropland P - Improved pasture and forage crops K - Unimproved pasture and range land T - Productive woodland U - Non-productive woodland M - Swamp, marsh or bog S - Unproductive land - sand L - Unproductive land - rock 8 - Unmapped areas, (see note below) 6. Valid CLI Land Use Subclasses In the original inventory, subclasses were valid only in conjunction with uses 'A' and 'P'. The acceptable combinations and their significance are: Use Subclass Interpretation === ======== ============== A Blank 95.0% - 100.0% Cropland A 1 75.0% - 94.9% Cropland A 2 50.0% - 74.9% Cropland P Blank 95.0% - 100.0% Improved pasture and forage crops P 1 75.0% - 94.9% Improved pasture and forage crops P 2 50.0% - 74.9% Improved pasture and forage crops As part of the automation process, the Subclass_A field was also utilized in conjunction with use '8'to indicate why the area was not classified. The valid subclass codes in conjunction with use '8' are as follows: Use Subclass Interpretation === ======== ============== 8 Blank Unmapped area outside Canada 8 Z Water Area 8 T Forest Reserves 8 O National Parks 8 B Urban Areas 8 W Provincial Parks 7. Narrative Description of CLI Land Use The Canada Land Inventory land use classification divided the land into 13 classes, based on air photo interpretation, field surveys, and census information. The land use information was originally compiled on maps at a scale of 1:50,000. This information was later generalized to a scale of 1:250,000 and land use classes were combined where necessary to facilitate the input of information to the computerized Geographic Information System. Only a handful of maps were selected for publication from that series of 1:250,000 maps. The land use information is valid only for the year in which the air photos were taken or the area was field checked. As evidenced on the few printed maps (Montreal, Truro,Woodstock,Winnipeg and Prince Edward Island), this date varies from 1950 to 1970. Moreover, the date for one map sheet can vary as it is made up of sixteen 1:50,000 sub-components which themselves could have had variable dates. The average date of the inventory as a whole may be considered as 1966 but there is as yet no supportive evidence to this assumption. It may also be considered as 1961 vintage based on the evidence that the 1961 census was utilized the separate cropland from improved pasture. Some of the stated limits of the classification include: . The mapping does not reveal the socioeconomic factors intimately related to use of the land, such as size of farm unit or type of land tenure. . The mapping does not reflect degrees of productivity within classes. . The mapping does not reveal land capability. . The last four categories (productive woodland, unproductive woodland, swamps-marsh-or-bog, and unproductive land) are not 'use' classes, but rather refer to vegetative cover. . The separation of cropland and improved pasture was very difficult on air photos, particularly where field sizes were small. In most cases the ratio of cropland to improved pasture was determined from the 1961 census. In areas where extensive field work was carried out, such as in Quebec, partial separation was done. In the Prairie Provinces these classes were mapped separately using air photos. . The information has gone through two stages of generalization. First, the information was generalized during air photo interpretation to fit the classification and the minimum size requirements of the 1:50,000 maps. This information at the 1:50,000 scale to fit the size requirements and the maximum of three land use classes per unit area for the 1:250,000 map. The stated potential uses for these maps included: a) as an information document for regional planning; for this, it is best used along with the land capability map series produced by the Canada Land Inventory. b) as a historical document presenting the use of the land at a particular point in time. c) as an educational tool in schools and universities. 8. Detailed CLI Land Use Classification 'B' Built-up area. Land occupied by cities, towns, and villages, or by isolated units away from settlements such as manufacturing plants, rail yards, and military camps. Parks and other open spaces within built-up areas are also included. 'E' Mines, quarries, sand and gravel pits, open excavations. Land used in the past or present for the extraction of earth materials. '0' Outdoor recreation - Land used for private or public outdoor recreational purposes. Some examples are: golf courses, parks, beaches, summer cottage areas, game preserves and historic sites. 'H' Horticulture, poultry and fur operations. Land used for intensive cultivation of vegetables and small fruits, includes market gardens, nurseries, flower and bulb farms and sod farms. Large scale commercial fur and poultry farms are also included because of their specialized agricultural nature. 'G' Orchards and vineyards. Land used for the production of tree fruits, hops and grapes. 'A' Cropland - Land used for annual field crops such as grain, oilseeds, sugar beets, tobacco, potatoes, field vegetables and canning crops. Associated fallow, and land being cleared for field crops are also included. 'P' Improved pasture and forage crops.- Land used for improved pasture or for the production of hay and other cultivated fodder crops, including land being cleared for these purposes. 'K' Rough grazing and range land. Areas of natural grasslands, sedges, herbaceous plants and abandoned farmland whether used for grazing or not. Bushes and trees may cover up to 25% of the area. Intermittently wet hay lands (sloughs or meadows) are included as long as the land is utilized. Within some grassy, open woodlands, bushes and trees may exceed 25% cover if the area is actively grazed and no other use dominates. 'T' Productive woodland.Wooded land with trees having over 25% canopy cover and being over 20 feet in height approximately. Artificially restocked areas, or plantations are included regardless of age. Much cut-over and burned-over land is included. 'U' Non-productive woodland. Land covered by scrub growth. 'M' Swamp, marsh, or bog. Open wetlands except those which frequently dry up or show evidence of grazing or hay cutting. 'S' Sand, sand bars, sand flats, dunes and beaches - Unproductive unconsolidated land which does not support vegetation. 'L' Rock and other unvegetated surfaces - rock barrens, badlands, alkaline flats, gravel bars, eroded river banks, mine dumps. Unproductive land which does not support vegetation. For further information see "A Guide to the Classification of Land Use For the Canada Inventory", January, 1968. 9. Accreditation The Canada Land Inventory extraction and distribution is managed by: The Canada Centre for Remote Sensing Natural Resources Canada Government of Canada Room 650 - 615 Booth Street Ottawa, ON, Canada K1A 0E9 Based on significant research and development by: The National Archives of Canada Statistics Canada Agriculture and Agri-Food Canada Data processing completed by: Spatialanalysis, Ottawa, Ontario, Canada K1Y 0N3 The National Archives of Canada retains intellectual property. (Copyright) Her Majesty the Queen in Right of Canada, 1999.