List of Articles اکوسیستم طبیعی Open Access Article Abstract Page Full-Text 1 - Analyzing the performance of managers in preventing damage urban hazards with an emphasis on passive defense in order to preserve environmental ecosystem)case study:Noshahr city) Farhad Bani Sheykh Aleslami Ameneh Haghzad Open Access Article Abstract Page Full-Text 2 - Assessment of urban management indicators in civil projects for the preservation of natural ecosystems (Case study: Sari city) Javad Falahatkar