The aim of the project is to investigate the behavior and perception of people who consume natural area for leisur and recreational time. We want to develop simulation tool based on multi reactive system and agent based modelling. The work we want to do on abisko national park is to understand behaviors and perceptions of tourist and local people to calibrate the model. Methodology : inqueries, interviews and tracking people in the park. The objective of the research is to bring to space managers an efficient tool to forecast reactions about their policies. In the same time, we want improve the theoritical field by showing an investigation on microscale interaction is able to shown effects on the whole system and help for emergencing process of structures at macroscale.