An Integrated Field and Hyperspectral Remote Sensing Method for the Estimation of Pigments Content of Stipa Purpurea in Shenzha, Tibet

Table 3

Estimation model and evaluation index of the photosynthetic pigment content of Stipa purpurea.

Variable	Model	Model function	Training sample ()		Validation sample ()
						SEE
	Chla		0.360	15.755	0.337	0.318
	Chlb		0.421	20.358	0.400	0.734
	Chls		0.402	9.086	0.358	3.226
	Chla		0.522	14.737	0.486	3.415
	Chlb		0.430	21.154	0.410	0.950
	Chls		0.484	12.686	0.446	2.996
	Chla		0.384	8.409	0.338	3.877
	Chlb		0.425	20.706	0.405	0.731
	Chls		0.401	9.053	0.357	3.229
RVI	Chla		0.655	25.575	0.629	2.903
	Chlb		0.712	33.423	0.691	0.687
	Chls		0.701	29.367	0.662	1.713
NDVI	Chla		0.686	29.554	0.663	2.766
	Chlb		0.653	25.415	0.627	0.755
	Chls		0.612	21.281	0.583	2.600
EVI	Chla		0.710	32.995	0.688	0.864
	Chlb		0.702	31.812	0.680	0.700
	Chls		0.556	16.913	0.523	2.034
RDVI	Chla		0.659	26.097	0.634	2.884
	Chlb		0.699	31.412	0.677	0.703
	Chls		0.655	25.682	0.630	1.792
VI1	Chla		0.579	18.593	0.525	3.285
	Chlb		0.583	18.839	0.552	0.828
	Chls		0.436	10.454	0.395	3.133
VI2	Chla		0.589	19.320	0.558	3.167
	Chlb		0.589	19.349	0.559	0.822
	Chls		0.444	10.784	0.403	3.112
VI3	Chla		0.668	27.196	0.644	2.877
	Chlb		0.552	16.652	0.519	0.858
	Chls		0.549	16.415	0.515	2.804