Distinguishing a Sustainable City Based on Various Approaches of Bioecologic Ethics with an Emphasis on Islamic View

In the third millennium, most of worlds` crowd will dwell in cities, and with an increase in bioecologic challenges, cities will face various challenges in future. Classifying the idea of a sustainable city on the basis of various approaches of bioecology`s ethics, this study distinguishes a pure city in its best state opposite to four scenarios of sprawl city, sustainable city, quasi sustainable city and bad city. Though bioecologic ruling for performing policies of sustainable urban development is necessary, it may not control human selfishness and egoism as essential cause of bioecologic problems. If the scenarios of bad city and urban sprawl lead respectively to worst and bad situation, those of quasi sustainable city and sustainable city will be a ground to turn the situation to a desired one rather than the best one (pure city). When emphasizing ruling, man`s purpose and motivation of moral behavior towards nature limits to some goals that may not motivate man towards moral behavior. Ethical action to nature and that which leads to human good, in addition to a harmonious system of formal and informal laws, legislative systems and a group of players in all levels of human society, would be dependent on a considerable change in human mental beliefs so that man perceives God`s comprehension over all things.