Appendix B. Topographic attributes of land facets, as well as location and number of land facets relative to topographic complexity of the three landscapes.
TABLE B1. Mean and range of topographic attributes of each land facet in each planning area. Although land facets overlapped in range of elevation, slope angle, and solar insolation, their joint distributions did not (Fig. 6). “Hot,” warm,” and “cool” refer to relative amounts of insolation.
Planning area |
Land facet description |
Mean elevation (m) (range) |
Mean slope (°) (range) |
Mean insolation (kWh-1) (range) |
Santa Rita - Tumacacori |
Canyon bottom: low elevation, gentle |
1216.7 (1059.6, 1401.1) |
8.5 (0.0, 18.0) |
-- |
Canyon bottom: mid elevation, gentle |
1540.4 (1375.4, 1828.4) |
11.4 (1.3, 19.7) |
-- | |
Canyon bottom: mid elevation, steep |
1354.6 (1096.6, 1551.2) |
23.6 (16.2, 36.1) |
-- | |
Canyon bottom: high elevation, steep |
1753.0 (1563.0, 2158.5) |
25.4 (13.8, 36.1) |
-- | |
Ridge: low elevation, gentle |
1257.5 (1104.1, 1449.0) |
9.8 (0.1, 20.1) |
-- | |
Ridge: mid elevation, gentle |
1597.2 (1425.2, 1946.7) |
12.5 (0.7, 21.2) |
-- | |
Ridge: mid elevation, steep |
1424.8 (1156.1, 1635.7) |
26.2 (18.2, 39.5) |
-- | |
Ridge: high elevation, steep |
1859.6 (1662.7, 2248.2) |
26.4 (14.3, 37.4) |
-- | |
Slope: low elevation, gentle, warm |
1180.9 (1031.7, 1449.3) |
6.2 (0.0, 20.8) |
1638.5 (1435.9, 1777.6) |
|
Slope: mid elevation, steep, cool |
1370.8 (1072.7, 1953.5) |
22.5 (12.7, 36.9) |
1384.9 (1015.7, 1556.5) |
|
Slope: mid elevation, steep, hot |
1449.7 (1131.5, 1933.0) |
22.0 (13.3, 36.0) |
1708.2 (1527.7, 1875.1) |
|
Slope: high elevation, gentle, hot |
1583.9 (1390.9, 1954.2) |
7.7 (0.0, 19.4) |
1726.9 (1501.9, 1893.4) |
|
Black Hills - Munds Mountain |
Canyon bottom: low elevation, gentle |
1314.3 (1049.9, 1603.6) |
9.8 (0.0, 21.1) |
-- |
Canyon bottom: mid elevation, steep |
1540.6 (1168.0, 1938.0) |
27.8 (17.9, 43.6) |
-- | |
Canyon bottom: high, elevation, gentle |
1829.2 (1544.7, 2090.9) |
14.6 (2.3, 28.5) |
-- | |
Ridge: low elevation, gentle |
1366.3 (1103.4, 1646.8) |
10.6 (0.0, 23.4) |
-- | |
Ridge: mid elevation, steep |
1635.6 (1199.1, 2044.8) |
29.9 (19.0, 49.2) |
-- | |
Ridge: high elevation, gentle |
1922.4 (1625.4, 2326.3) |
13.1 (1.0, 27.3) |
-- | |
Slope: low elevation, gentle, warm |
1188.5 (1047.1, 1529.4) |
4.8 (0.0, 16.5) |
1561.5 (1411.7, 1671.4) |
|
Slope: low elevation, steep, cool |
1387.2 (1067.2, 2056.3) |
18.2 (10.2, 35.9) |
1381.4 (987.6, 1552.0) |
|
Slope: mid elevation, gentle, warm |
1518.2 (1300.1, 1822.9) |
4.8 (0.0, 11.7) |
1642.3 (1494.1, 1750.5) |
|
Slope: mid elevation, steep, warm |
1586.0 (1111.3, 2103.9) |
18.1 (11.1, 35.6) |
1678.7 (1492.1, 1867.0) |
|
Slope: high elevation, gentle, hot |
1986.5 (1690.3, 2384.3) |
4.7 (0.0, 15.9) |
1729.7 (1546.2, 1886.8) |
|
Wickenburg - Hassayampa |
Canyon bottom: low elevation, gentle |
785.9 (452.0, 1284.0) |
8.5 (0.0, 16.5) |
-- |
Canyon bottom: low elevation, steep |
909.1 (493.0, 1244.0) |
22.7 (14.9, 35.5) |
-- | |
Canyon bottom: high elevation, steep |
1435.2 (1137.0, 1865.0) |
18.3 (4.4, 32.6) |
-- | |
Ridge: low elevation, gentle |
827.8 (497.0, 1337.0) |
10.4 (0.8, 18.3) |
-- | |
Ridge: low elevation, steep |
932.7 (511.0, 1362.0) |
25.4 (17.7, 36.7) |
-- | |
Ridge: high elevation, steep |
1514.7 (1170.0, 2019.0) |
19.1 (5.4, 33.1) |
-- | |
Slope: low elevation, gentle, warm |
588.5 (353.0, 974.0) |
1.7 (0.0, 16.2) |
1500.9 (1381.8, 1581.5) |
|
Slope: mid elevation, steep, cool |
800.8 (419.0, 1713.0) |
15.9 (6.9, 31.9) |
1363.5 (1020.7, 1517.8) |
|
Slope: high elevation, steep, warm |
1028.4 (488.0, 1995.0) |
10.9 (0.0, 33.3) |
1587.4 (1445.2, 1856.3) |
FIG. B1. Univariate distributions demonstrating the topographic complexity of cells in each topographic position for the three landscapes. Points indicate location of cluster centroids, and symbols differentiate between clusters within the same topographic position and landscape. The main pattern is that there were more land facets within a topographic position in more complex landscapes. For example, cells in the slope topographic position of the Wickenburg-Hassayampa planning area, which were only classified into three land facets, were narrowly distributed with respect to elevation, slope angle, and insolation (bottom row). Conversely, cells in the slope topographic position of the Black Hills-Munds Mountain planning area, which were classified into five land facets, had a multi-modal distribution with respect to elevation and a wider distribution with respect to slope angle and insolation.