Valuation of Landscape Changes on the Swiss Plateau: A Choice Experiment. Changes in land management through agriculture, forestry and other land uses may affect a variety of services, including landscape aesthetics and food production. Many of these services have important public-good characteristics. In contrast to private goods, the demand for public goods cannot be monitored in the markets. Thus, surveys are onr of the few ways of learning about the public's preferences for particular public services. In this study we used a survey-based economic valuation method called "choise experiment" to estimate the population's willingness-to pay for landscape changes in the Canton of Zurich. The experimental design of the written survey contained one stratification variable and onre treatment factor. The stratification variable divided the sample into subpopulations of urban, subarban and rural respondents.