Table 2 Biomass equations for (A) crown wood (b _CW), needles (b _N), crown (b _C) and stem biomass components (b _ST, g) according to the diameter at 30 cm above the ground (d, cm) for four particular interactions of factors site and treatment (Eqs. 1–4) and (B) for cone biomass (b _CO, g) according to both the length and width of female cones

Eq. 1

Dry

T _C

√b _CW = 8.78 + 0.96 · d ²

√b _N = 9.43 + 0.83 · d ²

√b _C = 12.93 + 1.27 · d ²

√b _ST = 7.19 + 0.89 · d ²

Semiarid

Eq. 2

Dry

T _{5 − 1600}; T _{10 − 1600}; T _{10 – 800}; T _5 + 10

√b _CW = 16.47 + 0.49 · d ²

√b _N = 16.48 + 0.43 · d ²

√b _C = 23.38 + 0.66 · d ²

√b _ST = 12.34 + 0.59 · d ²

Eq. 3

Dry

T _{5 – 800}

√b _CW = 19.66 + 0.42 · d ²

√b _N = 19.81 + 0.38 · d ²

√b _C = 28.10 + 0.57 · d ²

√b _ST = 17.06 + 0.51 · d ²

Eq. 4

Semiarid

T _C

√b _CW = 2.44 + 2.31 · d ²

√b _N = 2.89 + 2.07 · d ²

√b _C = 3.81 + 3.10 · d ²

√b _ST = 2.92 + 2.07 · d ²

R ² _adj

87

88

89

95

MAE

4.727

4.119

5.814

3.113

SEE

6.499

5.594

7.881

4.416

Dry site

b _CO = 3.30 + 0.000284 · L · D ²

Semiarid site

b _CO = 2.57 + 0.000284 · L · D ²

R ² _adj

88

SEE

2.930

MAE

2.377