Table 2.

Land cover extent (km²) by class across seven epochs from 2001 to 2016. Urban class extents in 2004, 2008, and 2013 are the same as their preceding epochs because impervious cover (the source of urban class delineation) was not available for 2004, 2008, and 2013.

NLCD Class	2001	2004	2006	2008	2011	2013	2016	MEAN	% of 2016CONUS	Net Change, 2001–2016
Open Water	424,962	423,241	422,740	424,108	429,541	424,784	423,670	424,721	5.26	−241
Perennial Ice/Snow	514	514	514	514	514	514	514	514	0.01	0
Developed-Open Space	225,435	225,435	229,307	229,307	231,433	231,433	232,276	229,232	2.84	+6841
Developed-Low Intensity	112,228	112,228	115,421	115,421	117,685	117,685	119,756	115,775	1.43	+7528
Developed - Medium Intensity	45,991	45,991	50,794	50,794	53,952	53,952	56,283	51,108	0.63	+10,292
Developed - High Intensity	16,296	16,296	18,039	18,039	19,419	19,419	20,260	18,252	0.23	+3964
Barren Land	81,820	82,497	81,416	82,026	81,394	82,332	82,897	82,054	1.02	+1077
Deciduous Forest	780,529	773,016	764,851	761,746	757,369	759,065	756,813	764,770	9.46	–23,716
Conifer Forest	963,379	947,830	937,814	930,183	929,753	931,326	923,780	937,724	11.61	−39,599
Mixed Forest	293,390	292,688	291,654	290,842	290,813	292,996	293,167	292,221	3.62	–223
Shrub/Scrub	1,755,623	1,764,682	1,758,856	1,766,856	1,752,378	1,756,432	1,760,135	1,759,280	21.77	+3657
Grassland Herbaceous	1,092,991	1,115,338	1,129,833	1,131,729	1,140,488	1,125,422	1,118,412	1,122,030	13.89	+25,421
Pasture/Hay	551,345	538,968	530,906	526,023	517,094	514,650	507,568	526,651	6.52	−43,777
Cultivated Crops	1,264,559	1,268,928	1,275,151	1,281,122	1,290,360	1,299,517	1,313,114	1,284,679	15.90	+48,555
Woody Wetlands	351,624	346,382	345,984	348,753	349,268	353,214	352,719	349,706	4.33	+1095
Herbaceous Wetlands	119,391	126,044	126,799	122,614	118,616	117,337	118,714	121,359	1.50	−677