基于Sentinel-2数据的草地植物功能多样性遥感反演及其与生产力的关系

赵晏平, 王忠武, 温都日根, 赵玉金, 白永飞

Remotely sensed monitoring method of grassland plant functional diversity and its relationship with productivity based on Sentinel-2 satellite data

ZHAO Yan-Ping, WANG Zhong-Wu, WENDU Rigen, ZHAO Yu-Jin, BAI Yong-Fei

表2 三种回归方法的验证精度

Table 2 Validation accuracy of the three regression methods

功能多样性指数 Functional diversity index 逐步回归 Stepwise regression 随机森林回归 Random forest regression 偏最小二乘回归 Partial least squares regression R2 RMSE R2 RMSE R2 RMSE FRic 0.52 4.51 0.40 5.18 0.36 4.88 FEve 0.43 0.03 0.32 0.04 0.35 0.03 FDiv 0.54 0.04 0.56 0.04 0.61 0.04