基于冠层时序植被指数的冬小麦单产预测

项方林,李鑫格,马吉锋,刘小军,田永超,朱艳,曹卫星,曹强

Using Canopy Time-Series Vegetation Index to Predict Yield of Winter Wheat

XIANG FangLin,LI XinGe,MA JiFeng,LIU XiaoJun,TIAN YongChao,ZHU Yan,CAO WeiXing,CAO Qiang

表7 基于RNDRE和RNDVI时序曲线特征参数的冬小麦单产模型验证结果

Table 7 Validation results of evaluation with winter wheat yield prediction models based on the characteristic parameters of time-series RNDRE and RNDVI curve

特征参数 Characteristic parameter RNDRE RNDVI R2 RRMSE (%) RE (%) R2 RRMSE (%) RE (%) 最大值 Maximum 0.81 8.0 8.4 0.65 12.1 15.1 累积值 Accumulative value 0.80 9.6 9.9 0.72 16.9 15.9 增长速率 Increase rate 0.36 19.8 20.8 0.01 78.1 90.8 下降速率 Decrease rate 0.44 24.3 23.7 0.07 46.0 44.8