Establishment and Application of Ecological Suitability Evaluation System for Highway Route Selectio

来源 :2017年世界交通运输大会 | 被引量 : 0次 | 上传用户:qq479255
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  Highway traffic construction has promoted the rapid development of national economy.At the same time,construction and operation of the road process have caused various kinds of damage and pollution such as vegetation,land,natural landscape,air environment,water resources,etc.At present,with the development of the highway construction,the ecological impact of highway has got more attention.There have been many researches on the environmental impact of highway construction.The existing research on the impact of highway on ecosystem is mainly focused on the ecological negative effect of highway construction,such as influence of habitat,ecological disturbance and animal activity.The research on the suitability of different ecological systems for highway construction is seldom seen from the ecological system itself.The environmental impact assessment of engineering construction has been fully carried out.But it is the existing research on the influence of highway on ecosystem.
其他文献
The development of logistics to supply chain reflects the role of logistics in improving overall social and economic efficiency,enhancing competitiveness of production enterprises and improving region
Concomitant with subway network expansion,rapid suburbanization of housing and firms took place in Beijing between 2011 and 2015.But it is unclear whether these changes produced a more balanced spatia
Transportation has played an important supporting role in the development of the national economy.Road transport is the pillar area of the transportation industry.Research on the Relationship between
The influence of the built environment on travel behavior has been the subject of considerable research attention in recent decades.Scholars have debated the role of residential self-selection in expl
Although many studies have explored the relationship between the built environment and travel behavior,the literature offers limited evidence about the collective influence of built environment attrib
The spatial disintegration of transit systems and land development is a vital challenge to the effectiveness of transit-oriented development policies.While transit-land use integration or disintegrati
回顾历史上多次重大的交通发展工程,从战略层面分析其对中国发展进程产生的深远影响。对新时代奋力建设"交通强国"的新要求、新内涵有一定的借鉴与启示。
科学准确地预测公路货运量是进行交通发展规划的合理依据。本文以陕西省安康市旬阳县货运量的历史数据为例,通过求解三次指数平滑模型、弹性系数法及多元线性回归模型的近似最优非负权重建立组合预测模型,分别运用单一模型和组合模型对旬阳县2007 至2015 年的公路货运量进行预测,结果表明组合预测模型具有更高的精确性。据此对旬阳县未来特征年份的货运量进行预测,为相关部门制定中长期规划提供更科学的依据。
由于航空旅客小汽车出行需求的持续增长,机场停车需求不断增加,进而导致机场停车场出现了供需不平衡的状况,本文基于收益管理思想,以期望车位占用率和停车场收益最大化为决策目标,建立了机场停车场收费定价的双层规划模型。基于随机用户均衡原则,建立了航空旅客出行方式选择模型作为双层规划模型的下层模型。并根据所建立的模型设计了相应的求解算法,而后通过算例验证了所提出的模型和算法的可行性。结果 表明,在定价时,考
铁路货物运输在我国运输市场中所占份额总体呈下降趋势,其中铁路运输效率就是问题之一。本文通过对原南昌铁路局、原北京铁路局、原南宁铁路局、原济南铁路局、原兰州铁路局、原上海铁路局、原成都铁路局、原郑州铁路局的调研,在调研数据的基础上,对这些路局的货物运输效率性现状进行了评价。并进一步运用数据包络分析方法(DEA),探寻货运效率低的来源,究竟是技术效率低下还是规模效率不足,从而提出改善对策。