Estimation of aboveground biomass and carbon stocks of Quercus ilex L. saplings using UAV-derived RGB imagery

Table 1 Regression models between UAV-derived sapling height and field tree height (n = 571)

Model	R² adjusted	p-value	RMSE	AIC
Lineal	0.87	< 0.001	16.76	4818.00
Second-order polynomial regression	0.87	< 0.001	16.74	4817.60
Third-order polynomial regression	0.88	< 0.001	16.69	4814.69
Fourth-order polynomial regression	0.88	< 0.001	16.66	4812.25
Logarithmic regression	0.76	< 0.001	23.01	5178.29
Inverse exponential regression	0.79	< 0.001	21.80	5116.75

ISSN: 1297-966X