基于高光谱指数的棉花冠层等效水厚度估算

马岩川,刘浩,陈智芳,张凯,余轩,王景雷,孙景生

Canopy Equivalent Water Thickness Estimation of Cotton Based on Hyperspectral Index

YanChuan MA,Hao LIU,ZhiFang CHEN,Kai ZHANG,Xuan YU,JingLei WANG,JingSheng SUN

表2 冠层等效水厚度统计描述

Table 2 Statistical description of canopy equivalent water thickness (mm)

生育期 Growth stage 样本 Sample 均值 Mean value 标准误 Standard error 标准差 Standard deviation 方差 Variance 最大值 Max value 最小值 Mix value 样本数 Sample size 蕾期 Bud stage 建模Calibration 0.2950 0.0158 0.1023 0.0105 0.5212 0.1383 42 检验Validation 0.3323 0.0332 0.1406 0.0198 0.6105 0.1480 18 总体Full 0.3060 0.0148 0.1149 0.0132 0.6105 0.1383 60 花铃期 Flowering and bolls stage 建模Calibration 0.4946 0.0214 0.1682 0.0283 0.8723 0.2297 62 检验Validation 0.5272 0.0285 0.1662 0.0276 0.8498 0.2216 34 总体Full 0.5062 0.0171 0.1673 0.0280 0.8723 0.2216 96 全生育期 Full growth period 建模Calibration 0.4140 0.0172 0.1750 0.0306 0.8723 0.1383 104 检验Validation 0.4597 0.0253 0.1823 0.0332 0.8498 0.1480 52 总体Full 0.4292 0.0143 0.1782 0.0317 0.8723 0.1383 156