Morphometric parameters | Descriptions | References |
---|---|---|
Linear aspects | ||
Stream number (Nu) | Nu = N1 + N2 + ... Nn; where, Lu = Length of the river, L1 = Length of the first-order river and L2 = Length of the second-order river and Ln = Number ‘n’ of the river length. | |
Stream length (Lu) | Lu = L1 + L2......; where, N1 = First-order river, N2 = Second-order river and Nn = Number of rivers | |
Average length of flow (Lum) | Lum = Lu/Nu; where, Lu = Length of rivers of a given order (km), Nu = Number of river segments. | |
Flow length ratio (Lur) | Lur = Lu/Lu−1; where, Lu = Total length of the rivers of order (u), Lu−1 = Total length of the rivers of the next lower order. | |
Bifurcation ratio (Rb) | Rb = Nu/Nu + 1; where, Nu = Number of river segments present in the given order, Nu + 1 = Number of segments in the next higher order. | |
Drainage density (Dd) | Dd = L/A; where, L = Total length of the river, A = Area of the basin. | |
Drainage texture (Tj) | Tj = Dd*Nj/A, where Tj = Torrentiality coefficient of the order flow; Nj = Number of streams of order j, A = Basin area, Dd = Drainage density (km × km−2). | |
Flow frequency (Fs) | Fs = N/A; where, L = Total number of rivers, A = Area of the basin | |
Length of surface flow (Lo) | Lo = 1/2Dd, where, Dd = Drainage density | |
Texture ratio (Rt) | Rt = N1/P; where, N1 = Total number of first-order rivers, P = Basin perimeter | |
Formal aspects | ||
Gravelius Compactness Coefficient (KG) | (KG) = 0.25P/ÖA; where KG = Gravelius compactness coefficient, P = Basin perimeter, A = Basin area | |
Form factor (Ff) | Ff = A/(Lb)^2; where, A = Area of the basin, Lb = Length of the basin | |
Basin shape (Bs) | Bs = Lb^2/A; where A = Area of the basin, Lb = Length of the basin | |
Form factor (k) | k = Lb^2p/4A; where A = Area of the basin, p = 3.14, Lb = Length of the basin | |
Circularity ratio (Rc) | Rc = 4pA/P^2; where A = Area of the basin, p = 3.14, P = Perimeter of the basin. | |
Elongation ratio (Ra) | Ra = Ö(A/p)/Lb; where, A = Area of the basin, p = 3.14, Lb = Length of the basin | |
Constant channel maintenance (C) | C = 1/Dd, where, Dd = Drainage density | |
Terrain aspects | ||
Basin relief (Rh) | Vertical distance between the lowest and highest point of the pool | |
Relief ratio (Rhl) | Rhl = Bh/Lb; where, Bh = Basin relief, Lb = Basin length | |
Relative relief (Rr) | Rr = Rh*100/P, where Rh = Basin relief, P = Basin perimeter. | |
Robustness number (Rn) | Rn = Bh ′ Dd; where, Bh = Basin relief, Dd = Drainage density | |
Slope (m) | m = Dy/Dx or Rise/Run where, m = Slope, Dy is a vertical change, Dx is a horizontal change | Todhunter (1888) |
Sub-basins | Number of flows (Nu) | Length of watercourse (Lu) | Length ratio | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 1 | 2 | 3 | 4 | 5 | 2/1 | 3/2 | 4/3 | 5/4 | |
SB1 | 217 | 100 | 65 | 45 | 6 | 340.30 | 144.10 | 95.22 | 62.45 | 8.04 | 0.92 | 1.02 | 0.95 | 0.97 |
SB 2 | 71 | 33 | 19 | 18 | – | 104.10 | 70.24 | 27.63 | 20.00 | – | 1.45 | 0.68 | 0.76 | – |
SB 3 | 7 | 5 | 11 | – | – | 11.68 | 11.48 | 2.14 | – | – | 1.38 | 0.93 | – | – |
SB 4 | 4 | 3 | – | – | – | 6.73 | 9.73 | – | – | – | 1.93 | – | – | – |
SB 5 | 4 | 3 | – | – | – | 4.43 | 8.39 | – | – | – | 2.53 | – | – | – |
SB 6 | 6 | 3 | 12 | – | – | 11.01 | 1.89 | 6.06 | – | 0.34 | 4.81 | – | – | |
SB 7 | 34 | 22 | 17 | 14 | – | 38.08 | 28.68 | 9.31 | 7.77 | – | 1.16 | 1.02 | 1.46 | – |
SB 8 | 9 | 8 | – | – | – | 13.15 | 12.42 | – | – | – | 1.06 | – | – | – |
SB 9 | 12 | 5 | 6 | – | 13.04 | 5.23 | 9.24 | – | – | 0.96 | 1.47 | – | – | |
SB 10 | 8 | 7 | – | – | – | 12.28 | 8.13 | – | – | – | 0.76 | – | – | – |
SB 11 | 28 | 17 | 16 | 14 | – | 33.30 | 27.30 | 7.30 | 5.17 | – | 1.35 | 0.76 | 1.06 | – |
SB 12 | 44 | 22 | 14 | 17 | – | 48.80 | 35.80 | 21.40 | 6.68 | – | 1.47 | 0.94 | 0.62 | – |
SB 13 | 33 | 14 | 15 | 14 | – | 44.40 | 26.40 | 7.29 | 13.20 | – | 1.40 | 0.77 | 0.65 | – |
SB 14 | 20 | 11 | 15 | – | – | 27.30 | 10.20 | 8.49 | – | – | 0.68 | 1.83 | – | – |
SB 15 | 7 | 4 | 11 | – | – | 13.00 | 6.15 | 0.98 | – | – | 0.83 | 0.64 | – | – |
SB 16 | 8 | 5 | – | – | – | 9.35 | 12.20 | – | – | – | 2.08 | – | – | – |
SB 17 | 20 | 13 | 14 | – | – | 19.10 | 18.60 | 9.22 | – | – | 1.50 | 1.61 | – | – |
SB 18 | 46 | 25 | 17 | – | – | 53.30 | 34.40 | 18.80 | – | – | 1.19 | 0.80 | – | – |
SB 19 | 82 | 44 | 12 | 25 | – | 118.00 | 58.20 | 16.00 | 24.40 | – | 0.92 | 1.01 | 0.73 | – |
SB 20 | 9 | 7 | – | – | – | 11.80 | 5.20 | – | – | – | 0.57 | – | – | – |
Sub-basins | Form factor (k) | Constant channel maintenance (C) | Gravelius Compactness Coefficient (KG) | Form factor (Ff) | Basin shape (Bs) | Circularity ratio (Rc) | Elongation ratio (Ra) |
---|---|---|---|---|---|---|---|
SB 1 | 2.111 | 2.100 | 2.086 | 0.372 | 2.689 | 0.226 | 2.679 |
SB 2 | 2.369 | 2.295 | 2.189 | 0.331 | 3.018 | 0.205 | 2.034 |
SB 3 | 2.297 | 2.444 | 1.676 | 0.342 | 2.926 | 0.350 | 1.210 |
SB 4 | 2.055 | 2.777 | 1.790 | 0.382 | 2.618 | 0.307 | 1.154 |
SB 5 | 2.250 | 2.566 | 1.700 | 0.349 | 2.866 | 0.341 | 1.039 |
SB 6 | 1.987 | 1.857 | 1.557 | 0.395 | 2.531 | 0.406 | 1.090 |
SB 7 | 1.200 | 1.991 | 1.911 | 0.654 | 1.528 | 0.270 | 1.824 |
SB 8 | 2.048 | 1.986 | 1.794 | 0.383 | 2.608 | 0.306 | 1.185 |
SB 9 | 1.742 | 2.055 | 1.710 | 0.451 | 2.219 | 0.337 | 1.268 |
SB 10 | 2.006 | 2.105 | 1.575 | 0.391 | 2.556 | 0.397 | 1.143 |
SB 11 | 1.411 | 2.169 | 1.795 | 0.556 | 1.798 | 0.306 | 1.729 |
SB 12 | 1.180 | 2.044 | 1.866 | 0.665 | 1.503 | 0.283 | 1.985 |
SB 13 | 1.600 | 2.061 | 1.917 | 0.491 | 2.038 | 0.268 | 1.749 |
SB 14 | 1.943 | 1.967 | 1.699 | 0.404 | 2.475 | 0.341 | 1.387 |
SB 15 | 1.568 | 2.277 | 1.518 | 0.501 | 1.997 | 0.427 | 1.235 |
SB 16 | 1.873 | 2.401 | 1.640 | 0.419 | 2.386 | 0.366 | 1.217 |
SB 17 | 1.520 | 1.984 | 1.500 | 0.516 | 1.937 | 0.438 | 1.485 |
SB 18 | 1.887 | 1.899 | 1.866 | 0.416 | 2.403 | 0.283 | 1.709 |
SB 19 | 2.058 | 1.872 | 2.005 | 0.381 | 2.622 | 0.245 | 1.989 |
SB 20 | 1.603 | 2.361 | 1.797 | 0.490 | 2.042 | 0.305 | 1.189 |
Sub-basins | Stream number (Nu) | Stream length (Lu) | Flow length ratio (Lur) | Bifurcation ratio (Rb) | Drainage density (Dd) | Drainage texture (Tj) | Flow frequency (Fs) | Length of surface flow (Lo) |
---|---|---|---|---|---|---|---|---|
SB 1 | 433 | 650.11 | 0.962 | 3.163 | 0.476 | 0.151 | 0.317 | 0.238 |
SB 2 | 141 | 221.97 | 0.966 | 1.648 | 0.436 | 0.121 | 0.277 | 0.218 |
SB 3 | 13 | 25.30 | 1.154 | 3.200 | 0.409 | 0.086 | 0.210 | 0.205 |
SB 4 | 7 | 16.46 | 1.928 | 1.333 | 0.360 | 0.055 | 0.153 | 0.180 |
SB 5 | 7 | 12.82 | 2.525 | 1.333 | 0.390 | 0.083 | 0.213 | 0.195 |
SB 6 | 11 | 18.96 | 2.576 | 1.750 | 0.538 | 0.168 | 0.312 | 0.269 |
SB 7 | 67 | 83.84 | 1.215 | 2.146 | 0.502 | 0.202 | 0.401 | 0.251 |
SB 8 | 17 | 25.57 | 1.063 | 1.125 | 0.503 | 0.169 | 0.335 | 0.252 |
SB 9 | 23 | 27.51 | 1.217 | 1.617 | 0.487 | 0.198 | 0.407 | 0.243 |
SB 10 | 15 | 20.41 | 0.757 | 1.143 | 0.475 | 0.166 | 0.349 | 0.237 |
SB 11 | 55 | 73.06 | 1.057 | 1.993 | 0.461 | 0.160 | 0.347 | 0.230 |
SB 12 | 87 | 112.61 | 1.010 | 1.857 | 0.489 | 0.185 | 0.378 | 0.245 |
SB 13 | 66 | 91.26 | 0.941 | 1.838 | 0.485 | 0.170 | 0.351 | 0.243 |
SB 14 | 36 | 45.92 | 1.257 | 2.009 | 0.508 | 0.203 | 0.399 | 0.254 |
SB 15 | 12 | 20.10 | 0.734 | 2.875 | 0.439 | 0.115 | 0.262 | 0.220 |
SB 16 | 13 | 21.51 | 2.081 | 1.600 | 0.417 | 0.105 | 0.252 | 0.208 |
SB 17 | 37 | 46.87 | 1.555 | 2.394 | 0.504 | 0.201 | 0.398 | 0.252 |
SB 18 | 88 | 106.52 | 0.996 | 1.655 | 0.527 | 0.229 | 0.435 | 0.263 |
SB 19 | 163 | 216.01 | 0.887 | 2.003 | 0.534 | 0.215 | 0.403 | 0.267 |
SB 20 | 16 | 17.03 | 0.565 | 1.286 | 0.424 | 0.169 | 0.398 | 0.212 |
Sub-basins | Linear parameters | Shape parameters | Cp value | Final priority | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Rb | Dd | Tj | Fs | Lo | KG | Rf | Bs | Rc | Ra | |||
SB 1 | 2 | 11 | 14 | 13 | 11 | 19 | 7 | 17 | 2 | 20 | 11.6 | Low |
SB 2 | 13 | 15 | 15 | 15 | 15 | 20 | 1 | 20 | 1 | 19 | 13.4 | Low |
SB 3 | 1 | 18 | 18 | 19 | 18 | 6 | 2 | 19 | 15 | 7 | 12.3 | Medium |
SB 4 | 16 | 20 | 20 | 20 | 20 | 10 | 6 | 15 | 11 | 1 | 13.9 | Medium |
SB 5 | 17 | 19 | 19 | 18 | 19 | 8 | 3 | 18 | 13 | 1 | 13.5 | Medium |
SB 6 | 11 | 1 | 11 | 14 | 1 | 3 | 9 | 12 | 18 | 2 | 8.2 | High |
SB 7 | 5 | 7 | 4 | 4 | 7 | 16 | 19 | 2 | 5 | 16 | 8.5 | Medium |
SB 8 | 20 | 6 | 10 | 12 | 6 | 11 | 7 | 14 | 10 | 5 | 10.1 | High |
SB 9 | 14 | 9 | 6 | 2 | 9 | 9 | 13 | 8 | 12 | 10 | 9.2 | Medium |
SB 10 | 19 | 12 | 12 | 10 | 12 | 4 | 8 | 13 | 17 | 3 | 11.0 | Medium |
SB 11 | 8 | 13 | 13 | 11 | 13 | 12 | 18 | 3 | 9 | 14 | 11.4 | Medium |
SB 12 | 9 | 8 | 7 | 8 | 8 | 14 | 20 | 1 | 7 | 17 | 9.9 | Medium |
SB 13 | 10 | 10 | 8 | 9 | 10 | 17 | 15 | 6 | 4 | 15 | 10.4 | Medium |
SB 14 | 6 | 4 | 3 | 5 | 4 | 7 | 10 | 11 | 14 | 11 | 7.5 | High |
SB 15 | 3 | 14 | 16 | 16 | 14 | 2 | 16 | 2 | 19 | 9 | 11.1 | Medium |
SB 16 | 15 | 17 | 17 | 17 | 17 | 5 | 12 | 9 | 16 | 8 | 13.3 | Medium |
SB 17 | 4 | 5 | 5 | 7 | 5 | 1 | 17 | 4 | 20 | 12 | 8.0 | High |
SB 18 | 12 | 3 | 1 | 1 | 3 | 15 | 11 | 10 | 6 | 13 | 7.5 | High |
SB 19 | 7 | 2 | 2 | 3 | 2 | 18 | 5 | 16 | 3 | 18 | 7.6 | Medium |
SB 20 | 18 | 16 | 9 | 6 | 16 | 13 | 14 | 7 | 8 | 6 | 11.3 | Medium |
Sub-basins | Basin relief (Rh) | Relief ratio (Rhl) | Relative relief (Rr) | Robustness number (Rn) |
---|---|---|---|---|
[m] | [m m−1] | [%] | [−] | |
SB 1 | 55 | 0.001 | 0.020 | 0.026 |
SB 2 | 50 | 0.001 | 0.028 | 0.022 |
SB 3 | 48 | 0.004 | 0.102 | 0.020 |
SB 4 | 44 | 0.004 | 0.102 | 0.016 |
SB 5 | 51 | 0.005 | 0.146 | 0.020 |
SB 6 | 50 | 0.005 | 0.152 | 0.027 |
SB 7 | 49 | 0.003 | 0.056 | 0.025 |
SB 8 | 52 | 0.005 | 0.114 | 0.026 |
SB 9 | 51 | 0.005 | 0.111 | 0.025 |
SB 10 | 46 | 0.004 | 0.125 | 0.022 |
SB 11 | 56 | 0.003 | 0.069 | 0.026 |
SB 12 | 56 | 0.003 | 0.055 | 0.027 |
SB 13 | 54 | 0.003 | 0.058 | 0.026 |
SB 14 | 51 | 0.003 | 0.088 | 0.026 |
SB 15 | 48 | 0.005 | 0.131 | 0.021 |
SB 16 | 50 | 0.005 | 0.119 | 0.021 |
SB 17 | 49 | 0.004 | 0.095 | 0.025 |
SB 18 | 55 | 0.002 | 0.058 | 0.029 |
SB 19 | 54 | 0.002 | 0.038 | 0.029 |
SB 20 | 50 | 0.006 | 0.123 | 0.021 |
Land use | 2000 | 2019 | Balance sheet | |||
---|---|---|---|---|---|---|
[km2] | [%] | [km2] | [%] | [km2] | [%] | |
Cultivated areas and bare soil | 892 | 18.6 | 1036 | 21.6 | 144 | 3.0 |
Open woodland | 2719 | 56.7 | 2291 | 47.8 | −428 | −8.9 |
Very open woodland | 933 | 19.5 | 1151 | 24.0 | 217 | 4.5 |
Water surface | 83 | 1.7 | 112 | 2.3 | 29 | 0.6 |
Other | 164 | 3.4 | 202 | 4.2 | 38 | 0.8 |
Total | 4791 | 100.0 | 4791 | 100.0 | – | – |
Classes | Cropland and bare ground | Open woodland | Very open woodland | Water | Tannes and burn | Losses |
---|---|---|---|---|---|---|
[km2] | ||||||
Cropland and bare ground | 528.00 | 140.00 | 189.00 | 1.00 | 33.90 | 364.00 |
Open woodland | 230.00 | 1917.00 | 534.00 | 0.24 | 37.30 | 802.00 |
Very open woodland | 247.00 | 229.00 | 392.00 | 0.09 | 65.20 | 541.00 |
Water | 0.29 | 0.15 | 0.10 | 79.60 | 2.93 | 3.47 |
Tannes and burn | 30.40 | 4.40 | 35.50 | 31.00 | 63.00 | 101.00 |
Earnings | 507.00 | 374.00 | 759.00 | 32.50 | 139.00 | – |
Sub-basins | Absolute value of the percentage difference in land use area between 2019 and 2000 | Prioritisation of land use change [%] | Cp value | Final priority | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Cropped areas and bare soil | Open woodland | Very open woodland | Tannes and burnt land | Cropped areas and bare soil | Open woodland | Very open woodland | Tannes and burnt land | |||
SB 1 | 14.81 | 13.67 | 4.05 | 3.64 | 2 | 6 | 3 | 1 | 3.00 | High |
SB 2 | 2.82 | 11.11 | 14.67 | 0.73 | 16 | 20 | 1 | 2 | 9.75 | Medium |
SB 3 | 4.35 | 0.50 | 4.74 | 0.10 | 13 | 17 | 2 | 10 | 10.50 | Medium |
SB 4 | 6.10 | 8.23 | 1.31 | 0.83 | 12 | 10 | 5 | 5 | 8.00 | Medium |
SB 5 | 8.05 | 9.24 | 1.43 | 0.24 | 10 | 8 | 6 | 14 | 9.50 | Medium |
SB 6 | 7.03 | 8.43 | 1.59 | 0.23 | 11 | 9 | 7 | 13 | 10.00 | Medium |
SB 7 | 12.97 | 45.97 | 32.30 | 0.69 | 4 | 1 | 20 | 7 | 8.00 | Medium |
SB 8 | 12.95 | 13.56 | 1.06 | 0.49 | 5 | 7 | 4 | 17 | 8.25 | Medium |
SB 9 | 3.93 | 21.12 | 18.59 | 0.21 | 14 | 3 | 16 | 11 | 11.00 | Medium |
SB 10 | 0.46 | 23.80 | 23.14 | 0.91 | 10 | 2 | 19 | 4 | 8.75 | Medium |
SB 11 | 8.39 | 13.80 | 5.63 | 0.24 | 9 | 5 | 9 | 15 | 9.50 | Medium |
SB 12 | 2.80 | 16.48 | 19.17 | 0.11 | 17 | 4 | 17 | 8 | 11.50 | Medium |
SB 13 | 2.37 | 4.46 | 2.74 | 0.35 | 18 | 16 | 8 | 16 | 14.50 | Low |
SB 14 | 10.42 | 1.60 | 9.24 | 0.04 | 6 | 18 | 11 | 9 | 11.00 | Medium |
SB 15 | 14.71 | 7.53 | 21.27 | 2.71 | 3 | 12 | 18 | 2 | 8.75 | Medium |
SB 16 | 2.86 | 7.46 | 10.49 | 0.21 | 15 | 13 | 13 | 12 | 13.25 | Low |
SB 17 | 1.46 | 7.66 | 9.68 | 0.60 | 19 | 11 | 12 | 19 | 15.25 | Low |
SB 18 | 9.70 | 2.15 | 7.46 | 0.76 | 7 | 19 | 10 | 20 | 14.00 | Low |
SB 19 | 8.76 | 5.42 | 14.32 | 0.50 | 8 | 14 | 15 | 18 | 13.75 | Low |
SB 20 | 24.54 | 5.04 | 13.68 | 1.77 | 1 | 15 | 14 | 3 | 8.25 | Medium |