重大铁路工程施工对沿线生态环境的影响

Enhancing the Ecological Environment Along the Route Impactedby Major Railway Construction Projects

重大铁路工程施工途经多个地貌单元,地形地貌复杂,生态环境脆弱。基于地理探测器模型,利用遥感数据,选取客观权重赋权法(CRITIC)整合4个指标绿度(NDVI)、湿度(WET)、干度(NDBSI)、热度(LST)构建遥感生态指数。以投入运营的铁路工程为例,剖析其沿线生态环境变化效应及驱动因素。通过客观分析铁路工程沿线生态环境时空变化特征,旨在实现铁路与区域环境的可持续发展。研究为重大铁路工程建设生态环境评价提供方法支撑,为铁路沿线生态修复与保护政策的制定奠定基础。

The construction of major railway projects traverses various geomorphological units characterized by complextopography and fragile ecological environments.Based on the geodetector model,this paper used Landsat remote sensing data andthe CRITIC method,an objective and objective weight assignment method,to integrate four indexes of NDVI,WET,NDBSI,and LST to construct the remote sensing ecological index.The effect of ecological environment change along the railroad project anddriving factors were analyzed by taking the railroad project which has been put into operation as an example.Through objectiveanalysis of the spatial and temporal characteristics of the ecological environment along railway projects,this study aims to promotesustainable development of railways and regional environments.The results offer methodological support for evaluating theecological environment of major railway projects and provide a foundation for developing policies for ecological restoration andprotection along railway lines.