The Research On Assessment Of Economical Losing Of Environment Impacts In Green Railway Alignment Selection

With the implementation of Railway sustainable development strategy and the proposition of " Green Railway Alignment Selection ", railway construction are requested to take natural conditions and ecological environment along the railway into consideration in the process of determination of the basic trend of lines, route alternatives selection, determination of the spatial position of route, and layout of various buildings alone the lines. In this way, the damage to environmental quality caused by railway construction project can be as small as possible.There are profound economic reasons which cause environmental problems. So, it's very necessary to solve environmental problems using economic means. Environmental information can be translated into specific economic information through the research of economical losing assessment of environment impacts in Green Railway Alignment Selection. This paper put forward the ideas and methods of applying the evaluation result to the cost - benefit analysis and Railway alternatives selection. The study plays a positive role and has practical application value to the Green Railway Alignment Selection. The main work of this paper is as follows:Firstly, based on analyzing the present status, characteristics and existed main problems of China's railway economical assessment of environmental impacts, the main study contents and methods have been proposed.Secondly, based on analyzing the background, implications, characteristic and technology development of the Green Railway Alignment Selection, the basic theory and methods have been studied. The theory and methods of economical losing assessment of environment impacts have been researched systematically from the three aspects of the identification of factors, quantification and monetization models and methods of environmental damage, broad cost - benefit analysis which considering the environmental costs. Thirdly, based on the identification of factors, indexes system and procedure of economical losing assessment of environment impacts in Green Railway Alignment Selection are determined. Adopting reasonable methods of environmental valuation, the monetary loss of environmental damage has been measured from six aspects of water and soil resources, vegetation resources, biodiversity, natural landscapes, noise pollution and atmospheric pollution. based on incorporating the economical loss of environmental impacts in the cost - benefit analysis, cost - benefit analysis mode which considering environmental costs and alternatives selection model of the Green Railway Alignment Selection have been set up to provide basis for decision makingFourthly, the visual function module of economical losing assessment of environment impacts and alternatives selection in Green Railway Alignment Selection have been realized by program designing with VB2005Finally, take the case of special railway of new Chemical area in Wuhan to verify the assessment process and methods of economical losing of environmental impacts.