Total Environmental Value and Total Economic Value

	Use Value	Passive use or non-use
TEV =	F(DUV, IUV, OV, QOV,	BV, EV)
TV =	G(PV,	TEV)

Where:

TV = Total Environmental Value
TEV = Total Economic Value
DUV = Direct Use Value
IUV = Indirect Use Value
OV = Option Value (including bequest value)
QOV = Quasi Option Value
BV = Bequest Value
PV = Primary Value
EV = Existence Value

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