Study On Evaluation And Optimization Of Road Traffic Network In The Dongting Lake Ecological Economic Zone

Urban transport is an important guarantee for social and economic activities, It has a pivotal position in the process of urban development. With the accelerating urbanization process, traffic problems have become the main problem of urban development. It can promote coordinated development of economic, social, ecological and transportation by ecological transport and sustainable transport that is the main way to solve the traffic problems, which is the main direction of the future development of the city. At present, research on the theory system of Ecological Traffic and sustainable transportation is not perfect, empirical studies have yet to be strengthened. Based on the above background, this paper studies and optimizes the road traffic network of Dongting Lake Ecological Economic Zone base on the concept of ecological transportation and sustainable transportation.Firstly, the paper summary the main content of transportation network research in domestic and international, and discusses the core content and requirements of the ecological traffic theory, ecological economy theory, theory of sustainable transportation, which establish theoretical basis for the following research. Then, this paper analyze current situation of the road traffic network in Dongting Lake ecological economic zone from three aspects of the regional situation, traffic location, traffic contradistinction.Secondly, the Dongting Lake ecological and economic zone road network were evaluated at three levels, namely the overall evaluation, the comparative evaluation of prefecture-level cities, counties comparative evaluation. The comparative evaluation of prefecture-level cities and counties comparative evaluation build a comprehensive evaluation index system of traffic network in the Dongting Lake Ecological Economic Zone from the five aspects of driving force, pressure, state, impact, response based on DPSIR model. Finally, identify the main problems of development have existed:transportation structure is irrational, integrated transport network system has not yet formed; overall level of economic development is not high and have obvious difference; the transportation infrastructure is poor and transport services level is low; eco-development situation is grim and sustainable development ability is low.Finally, based on the foregoing findings, this paper put forward measures from the government guidance, traffic layout, bus priority, ecological priority and other areas, which were divided into overall optimization and guidance. Overall optimization measures as follows: strengthen government guidance support, change traffic development concept; improve the road transport network layout, adhere to the integration of regional transport development; develop intelligent transport systems, promote public transport priority principle; deepen public awareness of environmental protection, reduce traffic pollution. Classified traffic guidance is mainly based on the specific development of each county,and put forward specific measures to solve.