Comparison of fresh biomass, length, diameter between prediction and observation of three six-year-old pines measured in 2006.

<p>The regression equations between observations and predictions and statistical tests for each indicator are listed as following: (a) Internodes biomass, <i>y</i> = 1.01+0.96<i>x</i>, (<i>R</i>² = 0.93, <i>p</i><0.0001, <i>n</i> = 15); (b) Internodes length, <i>y</i> = −4.64+1.20<i>x</i>, (<i>R</i>² = 0.91, <i>p</i><0.0001, <i>n</i> = 15); (c) Internodes diameter, <i>y</i> = −0.06+0.94<i>x</i>, (<i>R</i>² = 0.99, <i>p</i><0.0001, <i>n</i> = 15); (d) Needles biomass, <i>y</i> = 0.57+1.07<i>x</i>, (<i>R</i>² = 0.99, <i>p</i><0.0001, <i>n</i> = 8); (e) Trunk and branches fresh biomass, <i>y</i> = −64.84+1.11<i>x</i>, (<i>R</i>² = 0.97, <i>p</i> = 0.0168, <i>n</i> = 4); (f) Total fresh biomass, <i>y</i> = 54.46+0.89<i>x</i>, (<i>R</i>² = 0.86, <i>p</i> = 0.0235, <i>n</i> = 6).