Preferences of Young Adults concerning the Pocket Parks with Water Reservoirs in the Aspect of Willingness to Pay (WTP) in Warsaw City, Poland

The paper presents the results of a survey questionnaire conducted in order to determine the social preferences of young adults regarding their willingness to finance pocket parks in Warsaw (Poland). The preferences concerned the impact of the appearance and attractiveness of pocket parks for the inhabitants of the capital, the impact on the microclimate, the materials used to build water reservoirs, and the effect of the respondent's income on their willingness to finance them. The data were analyzed statistically (Kruskal-Wallis test, Mann-Whitney U logistic regression). The results show that young respondents prefer parks with natural water reservoirs. Willingness to pay was the highest in the case of natural parks and parks containing the most anthropogenically modified water reservoirs. It has been shown that the willingness to finance increased with the need for more greenery of this type and greater awareness of their positive impact on the improvement of the microclimate in the city. The higher the attractiveness of pocket parks for leisure and the higher the level of respondents' incomes, the greater the willingness to finance them. The level of financing also depended on the materials used to build water reservoirs in parks-the more elements made of hydrotechnical concrete, the higher the level of financing. This type of relationship was not found for natural materials, which is surprising given the already well-known threat of climate change and the decrease of biodiversity.