Research On The Impact And Evaluating Indicater System Of Beijing-Tianjin Inter Railway's Sub-Ecological Environment

High-speed railway's production is due to the contradiction between economic development and transport capacity. Because of High-speed rail's greater capacity, and its construction will be more effective in promoting economic development, and can effectively improve the uneven distribution of economic situation.China has a vast and its resource distribution and regional economic development is unbalanced, high-speed rail as a new mode of transportation will effectively improve the situation._At the same time high-speed railway is one of the engines of a new generation and the rapid development of the city.Generation of high-speed railway will have a great promotion the city's population structure city size, industrial structure, and political aspects of culture which along the high-speed railway, will also significantly speed up the urbanization process along.This article unifies the high-speed railroad secondary environment the concept and the connotation, the autnor builds high-speed railway's sub-ecological environment evaluating indicator system after analysising the property of its impact and evaluating and the features of high-speed railway. The indicator system is divided into three categories, including the secondary natural environment indicators, secondary social environment indicators and secondary indicators of the economic environment. All kinds of railway's sub-ecological environment evaluating indicator systems can be expressed in it after adding some character indexes which inscribe the structure and function of them.Analyzes high-speed railroad's characteristic, the author has established the analytic hierarchy-third-level fuzzy quality synthetic evaluation model according to the high-speed railroad secondary environmental effect appraisal the systematic characteristic and the complexity.The evaluative result accords with the qualitative practical conclusion, and also provide a reliable theoretical basis for the sustainable development of high-speed railway.