In addition to the economic valuation questions,
the questionnaire included questions
about preferences regarding different forest
attributes. The respondents were confronted
with four different photo series (these can
be seen in Mattsson et al., 1995). Each ofthese included four photo pictures. Each
photo picture showed a forest stand at a
specific phase of the rotation period, the
difference between the phases being approximately
30 years of development (i.e. the
‘total development’ or the rotation period
being approximately 120 years). Altogether,
the forest stands in a photo series formed a
particular forest landscape, resulting from a
particular silvicultural system.