Table 2 Prediction performances of the random forest models derived using 10-fold cross-validation.
From: The annual dynamic dataset of high-resolution crop water use in China from 1991 to 2019
Crops | BWU | GWU_I | GWU_R | ||||||
|---|---|---|---|---|---|---|---|---|---|
RMSE (mm) | R2 | NRMSE (%) | RMSE (mm) | R2 | NRMSE (%) | RMSE (mm) | R2 | NRMSE (%) | |
Winter wheat | 51.71 (±2.71) | 0.78 (±0.02) | 6.47 (±1.22) | 28.58 (±1.79) | 0.58 (±0.03) | 10.98 (±1.13) | 26.36 (±1.80) | 0.57 (±0.04) | 10.08 (±0.95) |
Spring wheat | 62.12 (±3.83) | 0.68 (±0.03) | 6.69 (±1.21) | 24.18 (±1.99) | 0.74 (±0.04) | 9.81 (±1.07) | 21.82 (±1.92) | 0.70 (±0.04) | 9.97 (±1.16) |
Spring maize | 70.97 (±3.55) | 0.77 (±0.02) | 5.94 (±0.89) | 30.13 (±2.38) | 0.63 (±0.05) | 10.77 (±1.15) | 28.13 (±2.72) | 0.53 (±0.03) | 11.98 (±0.97) |
Summer maize | 70.49 (±3.74) | 0.61 (±0.04) | 8.58 (±0.80) | 30.49 (±2.80) | 0.67 (±0.05) | 9.73 (±1.50) | 28.19 (±3.06) | 0.58 (±0.05) | 10.79 (±1.27) |
Early rice | 61.96 (±5.60) | 0.56 (±0.09) | 8.76 (±0.96) | 36.49 (±2.72) | 0.48 (±0.09) | 13.42 (±1.65) | 32.14 (±2.37) | 0.44 (±0.10) | 13.71 (±1.63) |
Late rice | 51.75 (±5.53) | 0.59 (±0.07) | 13.53 (±1.23) | 32.14 (±2.33) | 0.51 (±0.07) | 11.57 (±2.91) | 28.18 (±2.12) | 0.47 (±0.08) | 11.60 (±2.61) |
Single rice | 83.86 (±5.20) | 0.69 (±0.04) | 7.30 (±1.54) | 27.87 (±1.21) | 0.78 (±0.03) | 9.45 (±0.86) | 23.84 (±1.03) | 0.74 (±0.04) | 9.95 (±0.89) |
Soybean | 66.05 (±5.94) | 0.67 (±0.07) | 8.19 (±1.10) | 24.87 (±1.46) | 0.55 (±0.07) | 11.08 (±1.88) | 21.37 (±1.33) | 0.57 (±0.11) | 11.20 (±2.63) |
Potatoes | 62.17 (±4.10) | 0.85 (±0.02) | 4.93 (±0.67) | 28.30 (±2.29) | 0.67 (±0.04) | 10.56 (±1.16) | 25.97 (±2.03) | 0.64 (±0.04) | 11.04 (±1.19) |
Cotton | 65.17 (±4.50) | 0.75 (±0.04) | 6.15 (±1.12) | 28.39 (±2.41) | 0.75 (±0.06) | 9.51 (±1.45) | 26.01 (±2.25) | 0.68 (±0.07) | 10.30 (±1.57) |
Sugarcane | 91.95 (±8.49) | 0.56 (±0.06) | 12.52 (±1.47) | 46.61 (±4.48) | 0.47 (±0.09) | 14.49 (±3.47) | 45.47 (±3.53) | 0.51 (±0.10) | 14.09 (±4.03) |
Sugar beet | 87.61 (±5.52) | 0.78 (±0.03) | 5.94 (±0.79) | 24.05 (±1.88) | 0.80 (±0.04) | 9.20 (±1.55) | 21.51 (±1.75) | 0.78 (±0.05) | 9.79 (±1.87) |
Groundnut | 65.17 (±2.93) | 0.74 (±0.05) | 7.42 (±0.70) | 28.39 (±1.75) | 0.75 (±0.09) | 9.51 (±2.06) | 26.01 (±1.66) | 0.68 (±0.09) | 10.30 (±1.96) |
Spring rapeseed | 83.92 (±8.75) | 0.59 (±0.04) | 8.05 (±1.11) | 21.71 (±2.07) | 0.69 (±0.04) | 11.00 (±1.99) | 19.14 (±1.87) | 0.63 (±0.05) | 11.55 (±1.95) |
Winter rapeseed | 47.6 (±3.69) | 0.64 (±0.05) | 10.54 (±1.09) | 30.21 (±1.70) | 0.58 (±0.06) | 12.82 (±1.68) | 28.31 (±1.55) | 0.54 (±0.07) | 12.26 (±1.68) |
