... Box 1. Box 1: The Korup ProjectBenefits and Costs to the Cameroon(Present values, Million CFA, 1989 prices)(Discount Rate = 8%) VALUING THE ENVIRONMENT: PAST PRACTICE, FUTURE PROSPECT byDAVID ... estimated, and these were found to behave as predicted. The higher the price and the greater the distance to the source, the less likely wasconnection. WTP estimates were also obtained from the questionnaires. ... to pasture or permanent agriculture, then the amount of carbon stored in secondary vegetation is equivalent to the carbon contentof the biomass of crops planted, or the grass grown on the pasture....