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Material stock quantification and environmental impact analysis of urban road systems

机译:城市道路系统的材料股量化与环境影响分析

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摘要

Road construction area expands rapidly in China which challenges the conservations of natural resources. While available studies largely focused on consumptions at project level, this study integrated material flow analysis and life cycle assessment methods to quantify the material stocks and environmental impacts of urban road system. Remote sensing images were processed to extract road network skeletons. Taking Nanjing as an example, the results show that: 1) arterial road stores the largest amount of materials (42.9 million tons) of entire road system; 2) macadam occupies nearly 80% of total material stocks; 3) increase of road class coincides with the increase of material stock per unit area and enhances the material utilization efficiency; 4) arterial road is over-emphasized and expressway is still of a small scale in Nanjing. The methodology developed in this study provides a useful tool for road planning to effectively control resource depletion in the long term.
机译:道路建设区在中国迅速扩大,挑战自然资源的保护。 虽然可用研究在很大程度上专注于项目级别的消费,但这项研究综合了材料流量分析和生命周期评估方法,以量化城市道路系统的材料股和环境影响。 处理遥感图像以提取道路网络骨架。 以南京为例,结果表明:1)动脉路店储存全道路系统的最大材料(4290万吨); 2)Macadam占总材料股的近80%; 3)道路级别的增加与每单位面积的材料库存增加一致,增强了材料利用效率; 4)动脉道被过度强调,高速公路仍然是南京规模小规模。 本研究开发的方法为道路规划提供了有用的工具,以便长期控制资源耗尽。

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