基于RF和SGT算法的子区优先建模对绿洲尺度 土壤盐度预测精度的影响

王飞,杨胜天,魏阳,杨晓东,丁建丽

Influence of Sub-Region Priority Modeling Constructed by Random Forest and Stochastic Gradient Treeboost on the Accuracy of Soil Salinity Prediction in Oasis Scale

WANG Fei,YANG ShengTian,WEI Yang,YANG XiaoDong,DING JianLi

表2 12个情景的土壤电导率（dS·m-1）统计特征

Table 2 Summary statistics of salinity (dS·m-1) for the 12 scenarios used in this study

情景 Scenario 最小值 Min 最大值 Max 平均值 Average 变异系数 CV Q25 Q50 Q75 S1 0.14 184.5 31.32 1.29 1.42 13.11 48.00 S2 0.14 128.50 11.25 2.02 0.42 1.50 9.90 S3 0.15 184.50 47.14 0.95 11.84 26.00 79.95 S4 0.15 103.9 5.57 2.97 0.38 0.90 3.36 S5 0.14 184.50 47.33 0.95 11.59 26.00 88.00 S6 0.23 150.50 34.38 1.10 6.76 17.33 60.90 S7 0.27 184.50 50.40 0.92 11.77 35.40 78.82 S8 0.14 147.40 28.20 1.37 1.34 10.69 33.89 S9 0.14 3.99 0.99 0.95 0.33 0.55 1.41 S10 2.01 15.92 8.47 0.50 4.54 7.97 12.04 S11 4.06 184.50 46.43 0.90 13.11 25.70 75.60 S12 16.28 184.5 64.10 0.63 24.85 61.10 94.15