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Table 3.90
Ecosystem asset account, Trois-Rivières census metropolitan area-ecosystem (CMA-E), 1971 to 2011 Table 3.90
Ecosystem asset account, Trois-Rivières census metropolitan area-ecosystem (CMA-E), 1971 to 2011

Table 3.90
Ecosystem asset account, Trois-Rivières census metropolitan area-ecosystem (CMA-E), 1971 to 2011
Table summary
This table displays the results of Ecosystem asset account, Trois-Rivières census metropolitan area-ecosystem (CMA-E), 1971 to 2011. Total built-up area, Arable, Natural and semi-natural, Settled and Roads, calculated using square kilometres units of measure (appearing as column headers).
	Settled	Roads	Arable^Note 2	Natural and semi-natural^Note 3
	Total built-up area^Note 1		Arable^Note 2	Natural and semi-natural^Note 3
	square kilometres
Opening stock 1971	40	28	2,727	3,079
Land lost to settled area	Note ...: not applicable	Note ...: not applicable	-131	-110
Balance of change^Note 4	241	137	-256	120
Closing stock 2011	281	165	2,340	3,088
... not applicable Note 1. Built-up area data are taken from multiple sources. The 1971 built-up area is based on Canada Land Inventory: Land Use (CLI: LU). Canada Land Use Monitoring Program (CLUMP) data exclude the CMAs of Moncton, Trois-Rivières, Sherbrooke, Peterborough, Kingston, Barrie, Brantford, Kelowna and Abbotsford–Mission. As a result, 1971 built-up may be underestimated for these CMAs. CLI: LU built-up areas that were not built-up in the AAFC Land Use, 1990 dataset were removed from the 1971 built-up data and reclassified according to their 1990 cover. To improve comparability with the other years, roads included in the 1971 core built-up area were identified and removed to produce the 1971 settled area. As the 1971 dataset did not include roads outside the core built-up area, roads were modeled by applying the ratio of roads to settled area from 1990 to the 1971 settled area. Built-up area estimates for 2011 are based on Land Use, 1990, 2000 and 2010, codes 21 (Settlement–Built-up and urban) and 25 (Roads–primary, secondary and tertiary). Return to note 1 referrer Note 2. Arable land lost to settled area is calculated by overlaying the growth in settled areas from 1971 to 2011 on the CLI: LU base layer and, for areas where the 1971 settled area was trimmed, on the area reclassified using AAFC Land Use, 1990. The following CLI: LU classes were included: cropland, improved pasture and forage crops, orchards and vineyards and horticulture. Return to note 2 referrer Note 3. Natural and semi-natural land lost to settled area is calculated by overlaying the growth in settled area from 1971 to 2011 on the CLI: LU base layer and, for areas where the 1971 settled area was trimmed, on the area reclassified using AAFC Land Use, 1990. The following CLI: LU classes were included: forest, natural pasture and rangeland, outdoor recreation areas, rock and unvegetated surfaces, open wetland and unmapped areas. Return to note 3 referrer Note 4. The balance of change row reports the change, other than arable and natural and semi-natural land lost to settled area, that occurred from 1971 to 2011. These values are determined using an accounting procedure and represent the remaining difference between the opening and closing stock. Some rounding may occur. Return to note 4 referrer Sources: Statistics Canada, Environment, Energy and Transportation Statistics Division, 2016, special tabulation of data from Natural Resources Canada (NRCan), Canada Centre for Remote Sensing, 1999, Canada Land Inventory: CLI Land Use (circa 1966), ftp://ftp2.cits.rncan.gc.ca/pub/geott/cli_250k/landuse/ (accessed September 15, 2015); Agriculture and Agri-Food Canada (AAFC), 2015, Land Use 1990, 2000 and 2010, http://open.canada.ca/data/en/dataset/18e3ef1a-497c-40c6-8326-aac1a34a0dec (accessed September 16, 2015); AAFC and Statistics Canada, special tabulation, Census of Agriculture, Census Geographic Component Base 2011 and 2001 and Census of Agriculture, Regular Base 1971 and 1991; NRCan, Canada Centre for Mapping and Earth Observation, 2014, CanVec+, ftp://ftp2.cits.rncan.gc.ca/pub/canvec+/shp/ (accessed August 10, 2015).

Date modified:: 2016-03-31