چگونگي ارزشيابي منافع نهايي مردم از درياي خزر يا برآورد تقاضاي كيفيت محيط زيست آبي درياي خزر

How to Evaluate the Final Benefits for People in the Caspian Sea

The main goal of this article is "estimating demand for water quality in the Caspian sea". To obtain this goal Contingency valuation Method (CVM), Which does have good theoretical and empirical foundation is being used. The information needed is collected through 400 Completed questionnaries. Then those results which were Consistent with Mitchell and Vaughan ladder of water quality, included 95% of the Completed questionnaries were put on a two axis diagram. Horizontal axis includes four classes of quality for water and vertical axis measures willingness to pay (or accept) associated to four classes of qualities being chosen. Then, the sample results were adjusted to obtain demand for the whole population using Caspian sea as recreation in the Iranian side of Caspian sea.