روند برنامه ريزي در جهت احياي روده دره هاي شهر تهران مورد مطالعه رود دره كن

The Planning Process of Restoring of Tehranʹs River-Vallies Case Study: Kan River-Valley

Enlargement of cities, population growth, lack of urban greeneries in big cities (especially Tehran), inappropriate distribution of greeneries relative to the urban area, high costs of preserving available greeneries in the city, all have made the environmental and Iandscape designers and planners analyze and review the aesthetic aspects again. These aspects have so far been the only intended element in designing, excluding environmental adjustment, geographical and domestic qualities; so the designers and planners are supposed to pay more attention toward biological, geographical, social, and economic qualities of each area, along with aesthetic dimensions (Considering the principles and parameters of sustainability). Restoring and regulating urban ravines and rivers because of their plenteous biological potentials is an effective step ahead toward developing sustainable natural greeneries. Recently, the Iranian government has paid attention to planning, preserving and restoring these beautiful divine gifts in the form of natural promenades. Tehran is one of the cities, which enjoy a rich treasure of these natural-urban elements. But overuse of these treasures has ruined these nutural resources. So, it is very important and necessary to reassess the environmental capabilities and take measures to preserve and restore the natural eco systems. This paper deals with analyzing strategies and geographical systems in the planning process of sustainable development of River-valleyʹs by evaluating the environment and ecologic capabilities of the land. Thus, a brief introduction and analysis of Tehranʹs important River-values has been considered. Their strengths and weaknesses have also been evaluated. Kan River, one of Tehranʹs biggest River-values, has been introduced and studied. Its qualities have been mentioned as well. After that, an area seven kilometer north of Kan River-valley was chosen. For the sustainable development of this part of the River-valley through the process of preparation of the land, using SAD strategy, a part of this River-vally was chosen. Through this process Kan River-valleyʹs attributes were artificially, naturally and visually analyzed. Map of the lands-proportion and environmental qualities of the specified part were made using sieving techniques. Finally, strategies including basic suggestions toward exploiting advantages and opportunities, and studying weaknesses and threats were provided through SWOT matrix.