Ecological Planning And Environmental Impacts Evaluation Of Expressway Areas

Highway is the inevitable product of economic development. Highway, which shortened the time and space distance between people, accelerated the regional economic and cultural exchanges, and promoted social development, has become a symbol of human civilization. Meanwhile, with the interchange closed characteristics, the construction and operation of highway will inevitably affect its surroundings and the ecological environment, public attention has been focused on how to protect and reconstruct the ecological environment of highway. In this paper, the ecological planning and environmental impact assessment of highway is studied on the following aspects:First of all, this paper introduced the current study situation as well as related theory of ecological planning and environmental impact assessment of the highway.Secondly, this paper studied the general principles and methods of ecological planning, proposed the ecological planning of highway based on landscape ecology, pollution ecology and sustainable development theory respectively, and put forward the block diagram and steps of ecological planning.Thirdly, this paper studied the index system principles and methods of highway ecological environment, and constructs the index system of highway ecological environmental impact by analyzing environmental factors and choosing index based on analytic network process.Fourthly, highway environmental impact assessment model is built based on neural network, fuzzy approach and fuzzy neural network, Construction steps and the derivation of the formula are given as well.Finally, Jinan-Qingdao highway as the demonstration project, the ecological engineering construction plan and effect is given, and impacts of Jinan-Qingdao highway on ecological environment are evaluated in this paper.