Comprehensive assessment method for environmental impact of railway based on geographic information system^①

来源期刊：中南大学学报(英文版)2004年第3期

论文作者：吴小萍 陈秀方 马超群 杨晓宇 冉茂平 孟祥定

文章页码：340 - 342

Key words：railway planning; environmental impact assessment; geographic information system; graph overlay method

Abstract: By integrating the merits of the map overlay method and the geographic information system (GIS), a GIS based map overlay method was developed to analyze comprehensively the environmental vulnerability around railway and its impact on the environment, which is adapted for the comprehensive assessment of railway environmental impact and the optimization of railway alignments. The assessment process of the GIS based map overlay method was presented, which includes deciding the system structure and weights of assessment factors, making environmental vulnerability grade maps, and evaluating the alternative alignments comprehensively to obtain the best one. With the GIS functions of spatial analysis, such as overlay analysis and buffer analysis, and functions of handling attribute data, the GIS based map overlay method overcomes the shortcomings of the existing map overlay method and the conclusion is more reasonable. In the end, a detailed case study was illustrated to verify the efficiency of the method.