Artificial neural network models predicting the leaf area index: a case study in pure even-aged Crimean pine forests from Turkey

Forest Ecosystems

Table 3 Parameters and other statistics of the ‘Best fit’ Regression models predicting LAI as functions selected stand parameters including the stand basal area, site index, number of trees and stand age

Parameters	Coefficient	Standart error	Standardized coefficients	Contribution of stand parameters	t statistics	p-value
Intercept	0.7053	0.2423			2.9096	0.004
Basal Area	0.0059	0.0037	0.17777	15.51%	1.5902	0.011
Site Index	0.0257	0.0111	0.2636	23.01%	2.3269	0.002
Number of tees	0.0007	0.000115	0.4823	42.09%	4.5501	0.000
Age	−0.0038	0.0018	0.2222	19.39%	−2.1243	0.006