基于参数化和非参数化法的棉花生物量高光谱遥感估算

周萌,韩晓旭,郑恒彪,程涛,田永超,朱艳,曹卫星,姚霞

Remote Sensing Estimation of Cotton Biomass Based on Parametric and Nonparametric Methods by Using Hyperspectral Reflectance

ZHOU Meng,HAN XiaoXu,ZHENG HengBiao,CHENG Tao,TIAN YongChao,ZHU Yan,CAO WeiXing,YAO Xia

表4 各植被指数与棉花生物量之间的相关关系

Table 4 Correlation between vegetation indices and cotton biomass

植被指数 Vegetation index	相关系数 Correlation coefficient		植被指数 Vegetation index	相关系数 Correlation coefficient
植被指数 Vegetation index	吐絮前 Before boll opening	吐絮后 After boll opening	植被指数 Vegetation index	吐絮前 Before boll opening	吐絮后 After boll opening
GNDVI	0.67**	0.55**	PRI	0.23**	0.28*
DATT	0.63**	0.55**	RVI	0.26**	0.03
CI_{red edge}	0.59**	0.53**	EVI	0.15**	0.30**
MTCI	0.56**	0.50**	OSAVI	0.18**	0.33**
SRPI	0.34**	0.43**	DI	0.13**	0.16**
NPCI	-0.34**	-0.42**	DVI	0.07	0.14*
NDVI	0.29**	0.36**	TVI	0.04	0.10*