Table 3.

The correlation coefficient (r) for the relationships of vegetation indices with aerial N uptake at different viewing zenith angles (n = 155, p_0.001 = 0.262).

	−60°	−50°	−40°	−30°	−20°	−10°	0°	10°	20°	30°	40°	50°	60°
TWO BANDS
VIopt	0.560	0.644	0.732	0.795	0.831	0.858	0.855	0.829	0.764	0.712	0.643	0.531	0.390
DVI (810,560)	0.548	0.627	0.711	0.779	0.806	0.832	0.828	0.823	0.811	0.791	0.719	0.624	0.493
RDVI (800,670)	0.535	0.591	0.672	0.743	0.781	0.827	0.825	0.808	0.803	0.763	0.694	0.599	0.475
PSSRb	0.490	0.641	0.715	0.765	0.795	0.802	0.808	0.753	0.710	0.679	0.624	0.539	0.412
MSR	0.460	0.571	0.655	0.718	0.761	0.787	0.789	0.752	0.685	0.627	0.540	0.423	0.306
NDRE	0.602	0.683	0.732	0.759	0.774	0.778	0.779	0.760	0.738	0.715	0.689	0.646	0.583
SAVI (825,735)	0.565	0.660	0.706	0.742	0.765	0.764	0.758	0.749	0.734	0.715	0.687	0.643	0.587
CIred-edge3	0.558	0.670	0.726	0.758	0.776	0.766	0.753	0.748	0.728	0.702	0.674	0.626	0.552
THREE BANDS
DIDA	−0.699	−0.736	−0.792	−0.828	−0.853	−0.877	−0.871	−0.869	−0.842	−0.818	−0.789	−0.752	−0.672
DDn	−0.656	−0.715	−0.786	−0.827	−0.850	−0.872	−0.867	−0.865	−0.838	−0.812	−0.784	−0.724	−0.614
MTVI1	0.411	0.484	0.577	0.671	0.722	0.756	0.781	0.785	0.771	0.724	0.635	0.519	0.387
mRER	0.592	0.601	0.603	0.632	0.705	0.780	0.777	0.775	0.712	0.679	0.674	0.616	0.558
mSR705	0.504	0.643	0.719	0.753	0.771	0.769	0.749	0.713	0.674	0.653	0.612	0.534	0.407
mRPA	0.653	0.738	0.816	0.857	0.879	0.896	0.893	0.880	0.853	0.823	0.783	0.711	0.578
OVER 3 BANDS
DD	0.656	0.689	0.759	0.807	0.835	0.868	0.862	0.857	0.847	0.821	0.772	0.701	0.588
SDr-SDb	0.486	0.573	0.661	0.740	0.775	0.787	0.798	0.814	0.802	0.762	0.678	0.570	0.434
TVI-3	0.457	0.546	0.637	0.723	0.761	0.789	0.808	0.809	0.800	0.761	0.676	0.565	0.426
REFCA	−0.609	−0.655	−0.703	−0.736	−0.754	−0.750	−0.748	−0.741	−0.704	−0.695	−0.661	−0.621	−0.566