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Table 3 Biomass expansion factor (BEF) values/regression equations and belowground biomass density (BGBD) regression equation

From: Stand structure and species diversity regulate biomass carbon stock under major Central Himalayan forest types of India

Forest types GSVD value (m3 ha−1) BEF equation/value (Mg m−3)
Hardwoods GSVD > 200 1.0
GSVD < 200 BEF = exp {1.91 − 0.34 × ln(GSVD)}
Spruce-fir GSVD > 160 1.0
GSVD < 160 BEF = exp {1.77 − 0.34 ×ln(GSVD)}
Pine GSVD < 10 1.68
GSVD = 10–100 0.95
GSVD >100 0.81
  1. BGBD (Mg ha−1) = exp [(− 1.0587) + (0.8836 × Ln (AGBD, Mg ha−1)) + (0.284)]
  2. exp exponent, Ln natural logarithm
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