古尔班通古特沙漠灌木冠幅预测模型

王明娜, 张定海, 张志山, 路丽宁

Canopy width prediction models for the Gurbantunggut Desert

Mingna Wang, Dinghai Zhang, Zhishan Zhang, Lining Lu

表4 固沙灌木梭梭的冠幅预测模型

Table 4 Prediction model of crown width of sand-fixing shrub Haloxylon ammodendron

模型 参 数 评价指标 模型检验P a b c d e R2 RMSE MAE MAPE/% M1 -0.0184 19.640 0.836 0.855 0.183 0.096 24.92 <0.001 M2 -0.0293 35.590 0.827 -2 653.000 0.054 0.877 0.168 0.092 34.26 <0.001 M3 8.4840 0.911 1.190 1.274 0.844 0.190 0.113 38.14 <0.001 M7 0.2730 4.301 297.300 9.932 0.856 0.183 0.099 27.53 <0.001 M10 99.1200 0.011 0.008 0.824 0.202 0.013 47.90 <0.001