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Ecological Processes

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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