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5 基于CWT不同尺度的棉花生物量估算模型

Table 5 Cotton biomass monitoring model based on different scales of CWT

时期 Stage	波段 Band (nm)	尺度 Scale	模型 model	决定系数 Coefficient of determination (R²)	验证 Validation
时期 Stage	波段 Band (nm)	尺度 Scale	模型 model	决定系数 Coefficient of determination (R²)	R²	RMSE (g·m^-2)
吐絮前 Before boll opening	1202	3	y = 11.96e^-197.80x	0.41**	0.57	38.43
	1209	4	y = 11.11e^-68.73x	0.48**	0.63	31.54
	720	5	y = 60.34e^-3.52x	0.58**	0.59	34.56
	722	6	y=44.45e^-4.19x	0.59**	0.58	36.47
吐絮后 After boll opening	1202	3	y = 8.63e^-259.6x	0.40**	0.50	36.49
	1209	4	y = 9.40e^-78.69x	0.40**	0.48	37.57
	720	5	y = 78.25e^-3.49x	0.46**	0.55	48.41
	722	6	y=53.43e^-4.80x	0.55**	0.54	39.50