Abstract
The Planungszelle (PZ), which is an approach to consensus building, was carried out to extract desirable future (in 2050) scenarios of water use system and we analyzed how information providing and discussions about water use system affect participants' preferences to attributes of water use system or their scenario choosing. In addition, a new PZ method that ensures the diversity of participants was developed by applying the CLT(Central Location Test) system. Providing information helps participants to cognize the trade-off among attributes, and discussions accelerate their understandings of water use system and considerations to others' preferences. Participants finally support the scenarios in which more than one attribute would be improved through these processes.
