1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 n 63 93 41 166 93 25 20 43 21 20 20 20 43 26 21 27 20 20 20 20 20 20 21 21 20 20 20 20 21 24 102 36 34 39 75 64 49 59 46 59 86 64 56 54 75 67 94 127 PI 47.6 48.4 39.0 21.7 10.8 36.0 35.0 14.0 19.0 40.0 10.0 10.0 16.3 34.6 0.0 14.8 20.0 5.0 10.0 5.0 15.0 5.0 9.5 23.8 10.0 5.0 0.0 5.0 0.0 0.0 14.7 0.0 0.0 12.8 14.7 32.8 8.2 6.8 4.3 18.6 9.3 14.1 30.4 20.4 49.3 16.4 35.1 15.0 SE 6.3 5.2 7.6 3.2 3.2 9.6 10.7 5.3 8.6 11.0 6.7 6.7 5.6 9.3 4.6a 6.8 8.9 4.9 6.7 4.9 8.0 4.9 6.4 9.3 6.7 4.9 4.9a 4.9 4.6a 4.1a 3.5 2.9a 2.7a 5.4 4.1 5.9 3.9 3.3 3.0 5.1 3.1 4.3 6.1 5.5 5.8 4.5 4.9 3.2 31.7 29.0 26.0 4.1 3.1 21.1 15.4 1.1 5.8 6.7 0.5 1.9 1.1 12.9 8.6 10.1 1.6 2.6 1.1 5.3 2.2 3.3 6.1 2.4 0.5 2.6 11.3 2.8 0.4 0.9 3.5 1.3 0.4 8.5 8.2 19.8 3.6 0.8 1.0 9.4 4.6 3.7 22.7 9.6 28.5 2.1 8.2 5.5 15.9* 19.4** 13.0 17.5** 7.7* 14.9 19.6 12.9* 13.2 33.3** 9.5 8.1 15.2** 21.7* -8.6 4.7 18.4 2.4 8.9 -0.3 12.8 1.7 3.4 21.4* 9.5 2.4 -11.3* 2.2 -0.4 -0.9 11.2** -1.3 -0.4 4.4 6.5 13.0* 4.6 6.0 3.3 9.2 4.7 10.3* 7.6 10.8* 20.8** 14.3** 26.9** 9.5** n 799 695 838 508 53 811 810 468 787 859 896 879 856 945 918 757 599 664 158 785 800 812 779 817 878 266 749 448 52 34 213 26 300 654 419 667 26 24 32 587 74 143 622 232 715 487 595 151 PI 80.0 87.5 82.7 61.0 41.5 68.8 71.4 4.9 20.8 78.6 12.1 8.6 17.3 34.9 37.5 19.8 10.5 62.3 51.3 50.2 7.8 21.2 16.3 16.9 9.6 21.4 61.5 21.9 17.3 55.9 72.8 26.9 24.0 24.2 52.0 82.2 76.9 70.8 62.5 79.2 83.8 81.8 89.1 86.6 85.7 84.0 86.4 72.2 SE 1.4 1.3 1.3 2.2 6.8 1.6 1.6 1.0 1.4 1.4 1.1 0.9 1.3 1.6 1.6 1.4 1.3 1.9 4.0 1.8 0.9 1.4 1.3 1.3 1.0 2.5 1.8 2.0 5.2 8.5 3.1 8.7 2.5 1.7 2.4 1.5 8.3 9.3 8.6 1.7 4.3 3.2 1.3 2.2 1.3 1.7 1.4 3.6 69.4 70.7 50.8 21.5 16.0 42.6 49.5 2.1 14.3 53.3 6.6 0.8 1.0 24.6 29.5 8.6 3.3 47.1 23.2 42.8 1.9 13.7 14.1 7.3 0.8 12.2 48.4 14.1 18.5 43.8 59.8 12.9 4.0 19.0 22.1 67.7 59.7 45.1 66.8 78.9 80.1 70.7 77.5 74.7 73.9 65.0 76.7 67.7 Environmental Management (2010) 46:378–390 Table 1 Difference between photo-interpreted and NLCD 2001 derived tree canopy cover values by generalized NLCD land cover classes within each mapping zone Zone Developed land cover Forest land cover Agriculture–grassland land cover Other land cover NLCD Diff NLCD Diff NLCD Diff NLCD Diff 0.4 0.5 1.9 0.3 1.8 0.8 1.8 11.1 0.2 5.0 0.0 0.1 0.5 0.9 0.4 0.0 0.5 1.7 2.1 4.1 5.4 0.1 1.1 0.1 0.1 1.6 3.5 1.1 0.8 1.1 5.5 1.7 0.5 1.3 4.3 0.7 4.8 0.1 2.1 24.7 13.2 13.4 13.4 27.7 24.5 23.9 0.5 4.9 381 12.6* 16.7* -1.9 8.4* 13.6* 7.3 17.7** 6.3 4.5 10.0 0.0 3.6 2.9 19.1* -0.4 0.0 20.2** 13.3 22.9* -4.1 6.1 3.0 2.6 -0.1 14.2 3.4 2.0 -1.1 -0.8 8.5 4.5 2.9 4.5 3.7 0.4 8.5* 9.5 2.7 -0.3 0.9 6.1 11.6 16.6 2.3 2.8 17.0 9.5 14.1 123 10.6** 16.8** 31.9** 39.6** 25.6** 26.2** 21.9** 2.8** 6.5** 25.2** 5.5** 7.9** 16.3** 10.3** 8.0** 11.2** 7.3** 15.3** 28.1** 7.4** 5.9** 7.5** 2.2 9.6** 8.7** 9.2** 13.1** 7.8** -1.2 12.1 13.0** 14.0 20.0** 5.2** 29.9** 14.4** 17.2* 25.8* -4.3 0.3 3.7 11.1** 11.5** 12.0** 11.8** 19.0** 9.7** 4.5 n 84 179 118 280 815 122 133 464 101 124 58 22 72 35 41 103 359 305 818 187 165 116 188 132 99 711 199 528 916 919 676 940 659 295 464 202 922 890 863 264 831 787 322 710 201 441 306 718 PI 17.9 15.1 11.0 11.1 9.0 15.6 19.5 1.3 5.0 21.0 5.2 13.6 5.6 8.6 0.0 7.8 4.5 6.9 14.9 7.0 9.1 0.9 4.8 3.0 9.1 3.7 10.1 0.8 1.0 2.5 10.8 1.2 2.1 6.1 8.0 13.4 3.0 1.2 2.4 14.4 3.1 9.4 10.9 3.9 22.9 10.2 19.6 2.8 SE 4.2 2.7 2.9 1.9 1.0 3.3 3.4 0.5 2.2 3.7 2.9 7.3 2.7 4.7 2.4a 2.6 1.1 1.4 1.2 1.9 2.2 0.9 1.6 1.5 2.9 0.7 2.1 0.4 0.3 0.5 1.2 0.4 0.6 1.4 1.3 2.4 0.6 0.4 0.5 2.2 0.6 1.0 1.7 0.7 3.0 1.4 2.3 0.6 0.4 0.3 1.2 0.7 5.3 3.5 0.9 0.5 0.3 6.9 0.3 1.6 0.7 0.6 2.8 0.3 0.3 1.9 0.2 2.0 1.1 0.8 2.3 0.8 0.1 0.0 2.9 0.1 0.1 0.5 0.8 0.0 0.0 1.3 0.8 0.6 0.9 0.1 0.3 3.9 1.6 1.5 3.5 1.2 1.9 0.5 0.1 0.2 17.4** 14.8** 9.9** 10.4** 3.7** 12.0** 18.6** 0.8 4.7* 14.1** 4.9 12.0 4.8 7.9 -2.8 7.4** 4.1** 5.0** 14.7** 5.0** 8.0** 0.0 2.5 2.2 9.0** 3.6** 7.1** 0.7 0.8* 2.0** 10.0** 1.1** 2.1** 4.8** 7.2** 12.7** 2.1** 1.2** 2.1** 10.5** 1.6** 7.9** 7.4** 2.7** 21.0** 9.7** 19.5** 2.6** n 46 29 20 46 39 37 36 23 21 20 39 81 29 25 23 113 29 20 20 20 26 65 27 29 21 20 36 20 21 31 20 22 20 20 42 65 21 35 56 86 26 20 20 20 22 22 20 21 PI 13.0 17.2 0.0 8.7 15.4 8.1 19.4 17.4 4.8 15.0 0.0 3.7 3.4 20.0 0.0 0.0 20.7 15.0 25.0 0.0 11.5 3.1 3.7 0.0 14.3 5.0 5.6 0.0 0.0 9.7 10.0 4.5 5.0 5.0 4.8 9.2 14.3 2.9 1.8 25.6 19.2 25.0 30.0 30.0 27.3 40.9 10.0 19.0 SE 5.0 7.0 4.6a 4.2 5.8 4.5 6.6 7.9 4.6 8.0 2.5a 2.1 3.4 8.0 4.3a 0.9a 7.5 8.0 9.7 4.9a 6.3 2.1 3.6 3.4a 7.6 4.9 3.8 4.9a 4.6a 5.3 6.7 4.4 4.9 4.9 3.3 3.6 7.6 2.8 1.8 4.7 7.7 9.7 10.2 10.2 9.5 10.5 6.7 8.6