LCMAP CONUS Geographic Assessment Data Tables v1.0 1985-2016

This is a collection of data tables supporting the LCMAP CONUS Geographic Assessment v1.0. The data used to generate these tables come from the USGS LCMAP reference dataset and the map products released by LCMAP. Tables include annual land cover class composition and annual rate of land cover change metrics developed with a post-stratified estimator. Other tables including annual gross change of specific types of land covers, cumulative metrics of overall geographic footprint of change, frequency of overall geographic footprint of change, overall area estimates of specific class changes, and all unique changes in land cover classes. All tables cover the time period 1985-2016. All values in these tables are presented in percent and/or square kilometers of CONUS and include standard errors (SE). Tables 1a and 1b are annual land-cover class area estimates. Tables 1a and 1b are annual land-cover class area estimates. Table 1a presents the estimated area of each LCMAP land cover class as a percent of CONUS and Table 1b is the same in square kilometers, both with SEs. The area estimates include the following eight LCMAP land covers classes: Developed, Cropland, Grass/Shrub, Tree Cover, Water, Wetland, Snow/Ice, and Barren (Brown et al., 2020; Zhu et al., 2014).Table 2 is the estimated overall net change in each of the eight LCMAP land-cover classes: Developed, Cropland, Grass/Shrub, Tree Cover, Water, Wetland, Ice/Snow, and Barren (Brown et al., 2020; Zhu et al., 2014). It includes percent and square kilometers of CONUS in 1985 and 2016. The net area that changed between 1985 and 2016 is presented in percent and km2 of CONUS with the standard error of this change. Table 3 represents area estimates for the area that changed a specific number of times during 1985-2016. These areas are presented as both the fraction of LCMAP's CONUS extent and as the equivalent in square kilometers, with standard errors. The overall footprint of change that occurred between 1985 and 2016 is presented as the percent and km2 of CONUS. Table 4 is the estimated percent and areal extent (km2) of CONUS that experienced either a change, or none, for each year 1986-2016, with associated standard errors. Tables 5a-h present the areal extent estimates (in km2) for specific land-cover class changes with standard error for every year, 1986-2016. The specific land-cover classes include Developed, Cropland, Grass/Shrub, Tree Cover, Water, Wetland, Ice/Snow, and Barren (Brown et al., 2020; Zhu et al., 2014). Table 6a presents area estimates (km2) of CONUS for all land-cover class changes with standard error for every year, 1986-2016. Table 6b presents area estimates (km2) of CONUS that did not change for all eight LCMAP land-cover classes with standard error for every year, 1986-2016. The eight LCMAP land-cover classes include Developed, Cropland, Grass/Shrub, Tree Cover, Water, Wetland, Ice/Snow, and Barren (Brown et al., 2020; Zhu et al., 2014). Table 7 presents the estimated area (km2) of CONUS for four groupings of land-cover class changes with standard error for every year, 1986-2016. The eight LCMAP land-cover classes and class codes include Developed (1), Cropland (2), Grass/Shrub (3), Tree Cover (4), Water (5), Wetland (6), Ice/Snow (7), and Barren (8) (Brown et al., 2020; Zhu et al. 2014). The four groups include "Natural Resource Cycles", "Increases in Developed and Built-up Land", "Surface Water Expansion/Contraction", and "Other". Table 8 presents the cumulative (1985-2016) area of all specific land cover class changes, 56 in total.