عنوان مقاله [English]
During the recent decades the urban human settlements ,either through extension of their physical and structural boundaries or through the influence of ecological footprint in their adjacent pristine natural areas, are destroying and demolishing these intact natural areas more rapidly than the past. The foremost example of it would be the road transport networks. Such projects with infrastructural functions in natural territories are currently a significant proportion of designs that are planned and projected by landscape architects; it has provided an opportunity to create a complementary landscaping for both the projects and nature. In other words, the landscape approach based on the common language of landscape project in human territorial involvement is an effective strategy in creating a harmonious combination of functional and technical requirements of the project with site potentials and achieving sustainable development. In European countries and specially France, the road transport networks have high opportunities for development due to its appropriate climate and specific ecosystem. There exist three main approaches in management of transportation infrastructure development which are the Sustainable Design, Improving Life Quality and Steady Growth. Therefore, during the previous two decades the associated operation and management organizations try to arrange their special policies by assigning these projects to landscape architects to achieve an ecological sustainable development. The grand project of A20 Auto route, done by Allain Provost and Allain Cousseran together, that is one of the roads connecting the north to the south of France, is the best example of this particular design. This project has been widely admired for being a nature – oriented pass with intricate topography and specific biology, which had been the most important challenge, as well as unitized and intelligent combination of ecological and natural approaches to provide functional protection and optimization. The sculptural earthwork in the land biology using geometric hierarchy and scale reading in combination with the appropriate vegetation provides the aesthetic aspects with the ecological contextualism. The project attempts to adjust the visual boundaries and the nature to minimize the contrast between the natural environment and pristine lands. Such approaches in spatial organization have converted a connecting road that splits the natural territories into pieces by its self-indicated lines to harmonic intervention in the natural ecosystem. To wit, landscape approach to development infrastructures has provided the chance to accomplish human settlement influence on natural and ecological territories in a sustainable way maintaining biodiversity.