基于高光谱指数的棉花冠层等效水厚度估算

马岩川^1,²,刘浩¹,陈智芳¹,张凯¹,余轩^1,²,王景雷¹,孙景生¹(

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Canopy Equivalent Water Thickness Estimation of Cotton Based on Hyperspectral Index

YanChuan MA^1,²,Hao LIU¹,ZhiFang CHEN¹,Kai ZHANG¹,Xuan YU^1,²,JingLei WANG¹,JingSheng SUN¹(

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图6. R₁₁₃₄/(R₁₅₃₃-0.5R₂₀₈₆)与(R₁₁₃₅-5R₁₄₉₄)/R₂₀₀₃在各生育期内建模与检验表现
（a）(R₁₁₃₅-5R₁₄₉₄)/R₂₀₀₃与CEWT的定量关系;（b）基于(R₁₁₃₅-5R₁₄₉₄)/R₂₀₀₃的实测与预测数据1:1关系;（c）R₁₁₃₄/(R₁₅₃₃-0.5R₂₀₈₆)与CEWT的定量关系;（d）基于R₁₁₃₄/(R₁₅₃₃-0.5R₂₀₈₆)的实测与预测数据1:1关系

Fig. 6. Calibration and validation performance of R₁₁₃₄/(R₁₅₃₃-0.5R₂₀₈₆) and (R₁₁₃₅-5R₁₄₉₄)/R₂₀₀₃ in each growth stage
(a) Quantitative relationships between (R₁₁₃₅-5R₁₄₉₄)/R₂₀₀₃and CEWT; (b) The 1:1 relationship between the predicted and observed CEWT based on(R₁₁₃₅-5R₁₄₉₄)/R₂₀₀₃; (c)Quantitative relationships between R₁₁₃₄/(R₁₅₃₃-0.5R₂₀₈₆) and CEWT; (d) The 1:1 relationship between the predicted and observed CEWT based on R₁₁₃₄/(R₁₅₃₃-0.5R₂₀₈₆)