Simultaneous Usage of Double-Bounded and One and One-Half Bounded Dichotomous Choices in the Valuation of Sisangan Forest Park

In the last decade, the valuation of public goods has been considerably taken into account. Today, countries which are more likely to consider their economic development consider the tourism industry as a necessity and since naturalism or ecotourism is one of the major tourist attractions, serious attention is paid to this. The purpose of this study is an investigation of simultaneous usage of Double-Bounded Dichotomous Choices (DBDC) and one and one-half bounded Dichotomous Choices (OOHB) in determining the recreational value of Sysangan Forest Park with contingent valuation method in 2014.   

For this task, according to the theoretical literature of each choice, a questionnaire prepared for each choice, and necessary information gathered. Then with using Logit model and maximum likelihood method, effecting parameter on the recreation value of park estimated.

According to the results; the annual number of visits, consequence or ethical oriented of visitors and monthly family income of visitors have the significant effect on willingness to pay of visitors for recreation in this park. Expected willingness to pay in DBDS choice is relatively 12.2 percentages more than the similar amount in the OOHB choice. According to the results, the recreational value estimated of Sisangan forest park, with using of DBDC and OOHB choices are respectively 14949 and 11324 million Rial in 2014.

Although the results of this study can not be described as a general rule, but it can be said that based on the information collected by DBDC and OOHB selections in the studied samples, the model estimated by OOHB selections to In terms of good indicators, the fit is better and the recreational value of the park is more adjusted than the model used by DBDC selection.