· Valuation of environmental assets, goods, or services. "Valuation" refers to the process of deriving a monetary value for things which are not sold in a market; for example, fuelwood gathered in the forest, water filtration provided by a wetland, or biodiversity resources which could provide new medicines in the future. Valuation is an essential input into both social cost-benefit analysis and some approaches to environmental accounting. However valuation is only one element in the construction of environmental accounts; it is not the same as the construction of the accounts. · Social cost-benefit analysis. Social cost-benefit analysis tallies up all of the costs and benefits of a proposed.