Abstract

As the increase of the Earth's population and the human impact on the environment and the development of cities, the Earth has been seizing by the crisis, the negative environmental impacts of the city have grown to such an extent that the greatest threat to these ecosystems is counted. Environmental problems in Tehran are a very significant issue. The main aim of this research is to investigate environmental responsibly behaviors of high school students in Tehran with emphasizing on connectedness with nature. The research method was survey and a sample of 450 high school students in Tehran's 22 educational districts was selected by random cluster sampling. The research tool is a questionnaire. The results of the research show that responsibly environmental behaviors and the connectedness with nature of the students are moderate, while the environmental values of the students are high. There is no significant difference between girls and boys in responsibly environmental behaviors, environmental values, and connectedness with nature. Also, the findings showed that the connectedness with nature and environmental values with responsibly environmental behaviors and connectedness to nature with environmental values have a significant and positive relationship. The results of the partial mediator model test show that connectedness with nature part of its effect is made by environmental values on responsibly environmental behavior