Leaf area and growth of Chilean radiata pine plantations after thinning across a water stress gradient

New Zealand Journal of Forestry Science

Table 4 Linear regression models between leaf area index (LAI), volume growth (IVG) and water variables, water deficit index (WDI), water deficit (WD) and precipitation (AP), in the studied sites

Model	b ₀	b ₁	Residual standard error	R squared	p value
IVG = b₀ + b₁* WDI	25.2894*	0.0155*	2.42	0.69	< 0.001
IVG = b₀ + b₁* WD	28.9730*	0.0197*	2.03	0.78	< 0.001
IVG = b₀ + b₁* AP	1.9264	0.0141*	2.76	0.60	< 0.001
IVG = b₀ + b₁* LAI	10.2873*	5.1907*	1.90	0.81	< 0.001
LAI = b₀ + b₁* WDI	2.8767*	0.0029*	0.31	0.83	< 0.001
LAI = b₀ + b₁* WD	3.4210*	0.0034*	0.36	0.77	< 0.001
LAI = b₀ + b₁* AP	− 0.7139	0.0020*	0.58	0.41	< 0.003