Table 5 Characteristics of each layer class in the Dumpster Schafer method.
layer | category | number of pixels | pixel of solar farms | m(Tp) | M \((\overline{Tp})\) | m(θ) |
|---|---|---|---|---|---|---|
Distance to a power transmission line (km) | <5 | 47894 | 3105 | 0.006 | 0.179 | 0.815 |
5–10 | 43797 | 37296 | 0.577 | 0.074 | 0.349 | |
10–15 | 37476 | 29167 | 0.417 | 0.092 | 0.491 | |
15–20 | 31485 | 851 | 0.004 | 0.172 | 0.824 | |
20–50 | 122897 | 0 | 0.000 | 0.310 | 0.690 | |
>50 | 28885 | 0 | 0.000 | 0.173 | 0.827 | |
Distance to residential areas (km) | <10 | 312235 | 70416 | 1.000 | 0.050 | −0.050 |
10–15 | 199 | 0 | 0.000 | 0.950 | 0.050 | |
Distance to major roads (km) | <5 | 208769 | 40268 | 0.090 | 0.436 | 0.475 |
5–10 | 87034 | 28644 | 0.441 | 0.242 | 0.317 | |
>10 | 16631 | 1507 | 0.469 | 0.323 | 0.208 | |
land use | Agriculture | 37677.92 | 9021.109 | 0.002 | 0.127 | 0.871 |
bare land | 7249.68 | 0 | 0.000 | 0.132 | 0.868 | |
range land | 220315.4 | 54883.14 | 0.000 | 0.089 | 0.910 | |
salt land | 6228.599 | 0 | 0.000 | 0.132 | 0.868 | |
garden | 229.7434 | 120.1631 | 0.986 | 0.128 | −0.114 | |
forest | 26820.41 | 6266.233 | 0.002 | 0.128 | 0.870 | |
rock | 12142.36 | 0 | 0.000 | 0.135 | 0.865 | |
urban | 1769.875 | 128.3561 | 0.009 | 0.129 | 0.862 | |
Number of dusty days | >40 | 312434 | 70419 | 1.000 | 0.000 | 0.000 |
<40 | 0 | 0 | 0.000 | 1.000 | 0.000 | |
Number of cloudy days | >30 | 0 | 0 | 0.000 | 1.000 | 0.000 |
<30 | 312434 | 70419 | 1.000 | 0.000 | 0.000 | |
Relative humidity (%) | <30 | 0 | 0 | 0.000 | 0.416 | 0.584 |
30–40 | 312253 | 70400 | 0.001 | 0.168 | 0.831 | |
>40 | 181 | 19 | 0.999 | 0.416 | −0.415 | |
Air temperature (°C) | >24 | 0 | 0 | 0.000 | 1.000 | 0.000 |
<24 | 312434 | 70419 | 1.000 | 0.000 | 0.000 | |
solar radiation | >1900 | 312434 | 70419 | 1.000 | 0.000 | 0.000 |
<1900 | 0 | 0 | 0.000 | 1.000 | 0.000 | |
Land slope (degree) | <1 | 24551 | 4426 | 0.499 | 0.331 | 0.169 |
1–20 | 238544 | 52286 | 0.066 | 0.362 | 0.572 | |
>20 | 49339 | 13712 | 0.435 | 0.306 | 0.259 | |
Land elevation (m) | <1200 | 0 | 0 | 0.000 | 0.264 | 0.736 |
1200–2000 | 204959 | 55453 | 0.324 | 0.147 | 0.529 | |
2000–2500 | 94608 | 14675 | 0.348 | 0.312 | 0.340 | |
>2500 | 12873 | 296 | 0.328 | 0.277 | 0.395 |
