Table 4 The evaluation grade standard of the slope ecological restoration.
Index | Grades | ||||
|---|---|---|---|---|---|
I | II | III | IV | V | |
Shearing strength of root-soil composite/kPa (X1) | (60,100] | (50,60] | (40,50] | (30,40] | (0,30] |
Permeability/(mm h−1) (X2) | (30,40] | (20,30] | (10,20] | (5,10] | (0,5] |
Soil erosion intensity/(g cm−3 a−1) (X3) | (0,5] | (5,15] | (15,25] | (25,35] | (35,45] |
Root weight density/(kg m−3) (X4) | (3.5,4.5] | (2.5,3.5] | (1.5,2.5] | (0.5,1.5] | (0,0.5] |
Vegetation coverage/% (X5) | (95,100] | (80,95] | (65,80] | (40,65] | (0,40] |
Drought resistance of vegetation (X6) | 1 | 2 | 3 | 4 | 5 |
Shannon–Wiener diversity index (X7) | (3.0,3.5] | (2.5,3.0] | (2.0,2.5] | (1.5,2.0] | (0,1.5] |
Pielou evenness index (X8) | (1.0,1.2] | (0.8,1.0] | (0.6,0.8] | (0.4,0.6] | (0,0.4] |
Organic matter/(g kg−1) (X9) | (30,40] | (20,30] | (10,20] | (5,10] | (0,5] |
Available N/(mg kg−-1) (X10) | (75,100] | (55,75] | (35,55] | (15,35] | (0,15] |
Available P/(mg kg−1) (X11) | (30,40] | (20,30] | (10,20] | (5,10] | (0,5] |
Available K/(mg kg−1) (X12) | (205,260] | (150,205] | (95,150] | (40,95] | (0,40] |
Soil bulk density/(g cm−3) (X13) | (0,1.5] | (1.5,2.0] | (2.0,2.5] | (2.5,3.0] | (3.0,3.5] |
Landscape coordination (X14) | 1 | 2 | 3 | 4 | 5 |
Landscape capacity for visitors (X15) | 1 | 2 | 3 | 4 | 5 |
