The Research On The Highway Ecological Environmental Impact Post Assessment Index System & Quantification Model

Highway has become an important component of the modern transportation system in its speed, convenience, flexibility and wide coverage, access to the deep depth. It is a important basic industries of the national economy, to a certain extent a country or a region marked socio-economic level of development. However, the highway in a huge economic and social benefits, but also brought about the increasingly serious environmental problems such as soil erosion, bildiversity loss, and so on. Highway ecological environment has become the one of important issues of the field of environmental sicence and cnstruction management research, environmental impact post-assessment of ecological has become a important component of the environmental impact post-assessment of highway. China's environmental impact post-assessment of highway project of a late start, the results of small, especially the lack of interoperability can be useful to promote a strong quantitative models. Therefore, to further explore and study the environmental impact post-assessment of highway project of great significance.In this paper, reference to a great deal of literature, analysis of previous evaluation summary based on work experience and achievement foundation, combined with the union industry economy and environmental science's correlation theories, the characteristics of highway construction projects and highway construction project management in China's actual conditions, in line with China's national conditions to build a more comprehensive and systematic highway ecological environment impact post-assessment index system. The index system mainly includes the surface vegetation, biodiversity, soil erosion, agro-ecological environment, according to the establishment of the highway ecological environmental impact post-assessment index system evaluation system of the individual indicators, respectively, of the content from the evaluation, quantitative models, monitoring and survey analysis of evaluation, adoption of a revised comprehensive evaluation index method combined with the success of ecological environmental impact assessment. When carries on the ecological environment impact assessment, the union highway ecological environment various essential factors impact's characteristic, selects the different quantification model separately. Finally, Chang Zhang Expressway ecological environment impact in this paper as an example of the various indicators and the establishment of a comprehensive indicator of quantitative models can be tested, and the corresponding post-assessment findings.