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Examining spatial patterns and economic interactions of logistics activities across three Texas metropolitan areas 考察得克萨斯州三个大都市区物流活动的空间模式和经济互动关系
IF 6.1 2区 工程技术 Q1 ECONOMICS Pub Date : 2024-12-09 DOI: 10.1016/j.jtrangeo.2024.104079
Kailai Wang, Gino J. Lim, Bruce Race, Yunpeng (Jack) Zhang, Lu Gao, Fengxiang (George) Qiao
This study examines the spatial dynamics of warehouse location choice and the interplay between e-commerce, logistics businesses, and supply chain entities in three major urban areas in Texas: Houston, Austin, and Dallas-Fort Worth. We investigate the key factors influencing warehouse selection while accounting for spatial spillover effects (i.e., co-locational relationships), using data from 2003 to 2016. A major finding is that different types of business establishments exert distinct influences on warehouse location choice, varying across spatial scales. Notably, the effects from neighboring spatial units sometimes diverge from the direct impacts. For instance, manufacturing establishments have a positive direct influence on warehouse location choice in all three study areas, while neighboring manufacturing units show negative effects in Austin and Dallas. The analysis also highlights that when spatial interactions among e-commerce facilities, logistics businesses, and supply chain entities in adjacent units are accounted for, several transportation infrastructure and socioeconomic factors lose their statistical significance. The results provide valuable insights for policymakers, industry practitioners, and urban planners for informed warehousing facility allocation and development decisions in Texas metropolitan areas.
本研究考察了德克萨斯州休斯顿、奥斯汀和达拉斯-沃斯堡三个主要城市地区的仓储区位选择的空间动态,以及电子商务、物流企业和供应链实体之间的相互作用。本文利用2003年至2016年的数据,在考虑空间溢出效应(即共址关系)的情况下,研究了影响仓库选择的关键因素。主要发现是不同类型的商业机构对仓库选址的影响不同,在不同的空间尺度上存在差异。值得注意的是,邻近空间单元的影响有时会偏离直接影响。例如,在所有三个研究区域中,制造企业对仓库选址有直接的积极影响,而邻近的制造企业在奥斯汀和达拉斯则表现出负面影响。分析还强调,当考虑到相邻单元中电子商务设施、物流企业和供应链实体之间的空间相互作用时,一些交通基础设施和社会经济因素失去了统计意义。研究结果为决策者、行业从业者和城市规划者提供了有价值的见解,为德克萨斯州大都市地区的仓储设施配置和发展决策提供了依据。
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引用次数: 0
A hierarchical spatial and temporal optimisation of the air-high speed rail intermodal network 空中高速铁路多式联运网络的分层时空优化
IF 6.1 2区 工程技术 Q1 ECONOMICS Pub Date : 2024-12-07 DOI: 10.1016/j.jtrangeo.2024.104085
Mengyuan Lu, Edgar Jimenez Perez, Keith Mason, Max Z. Li
Spatial and temporal coordination of air-high speed rail (HSR) intermodal networks is important to reduce emission, improve service, enhance efficiency, and reduce costs in the provision of air-HSR integration. This paper constructs a hierarchical optimisation model that first considers a spatial scope to solve the problem of route allocation and frequency choice which minimises total environmental, operational and passenger cost with a Mixed-Integer Linear Programming (MILP) model, based on a demand estimation for passenger trips between city pairs. Then, the second hierarchical level of the model considers a temporal scope to maximise connection opportunities between the resulting air and HSR networks using time windows to adjust frequencies with a Prescriptive Integer Quadratic Programming (PIQP) model. An application to a network of 40 cities in mainland China with both air and HSR transport service shows that the total emission of the network can be reduced by 22 %. Comparative analyses show that optimising for passenger costs favours increased air travel on medium- and long-haul routes, while an emissions-focused approach encourages a shift toward HSR for short and medium distances. Sensitivity analyses on carbon pricing further highlight the potential of gradual price adjustments to incentivise lower-emission modes without requiring additional HSR infrastructure.
空高铁(HSR)多式联运网络的时空协调对于减少排放、改善服务、提高效率和降低成本具有重要意义。本文构建了一个分层优化模型,该模型首先考虑空间范围,利用混合整数线性规划(MILP)模型解决路线分配和频率选择问题,以最小化总环境,运营和乘客成本,基于城市对之间的乘客旅行需求估计。然后,该模型的第二个层次考虑了一个时间范围,以最大限度地提高由此产生的空气和高铁网络之间的连接机会,使用时间窗口通过规定性整数二次规划(PIQP)模型调整频率。对中国大陆40个城市的航空和高铁交通网络的应用表明,该网络的总排放量可以减少22%。对比分析表明,优化乘客成本有利于增加中长途航线的航空旅行,而以排放为重点的方法则鼓励中短途转向高铁。对碳定价的敏感性分析进一步强调了在不需要额外高铁基础设施的情况下,逐步调整价格以激励低排放模式的潜力。
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引用次数: 0
Unlocking the gates: Pedestrian route choice in transforming metro station paid areas into mobile public spaces 打开大门:将地铁站付费区域转变为移动公共空间的行人路线选择
IF 6.1 2区 工程技术 Q1 ECONOMICS Pub Date : 2024-12-07 DOI: 10.1016/j.jtrangeo.2024.104083
Ho Yin Chan, Wai-Yi Tse, Anthony Chen
Recent discussions on public transport as public space are particularly relevant in transit-oriented cities, where urban design profoundly shapes connectivity and pedestrian flow. Strategies such as destination consolidation, node manipulation, and privatized infrastructure, including walkways and transit systems, significantly influence these patterns. Assimilating ideas from nudge and practice theories, this study examines pedestrians' reactions to hypothetical scenarios of opening quasi-public paid areas in metro stations to the public. Using three pairs of interconnected metro stations in Hong Kong—two linked by private paid walkways (stated preference) and one by public unpaid walkways (revealed preference)—a questionnaire survey (N=419) and discrete choice modeling were conducted. Results show adverse weather, such as rain or extreme temperatures, is a primary driver for choosing weather-protected underground paths. However, proximity and distance do not consistently predict route choice, suggesting the influence of less visible factors. For example, retail shops along a route subtly encourages usage, even for individuals with limited interest in shopping, serving as markers of convenience or familiarity. Routes with proprietary underground exits also promote underground usages. These findings reveal how deliberate design, ingrained habits and symbolic meanings collectively shape pedestrian decisions. By uncovering the social-political dynamics of pedestrian movement, this study contributes to the politics of routes discourse and offers quantitative insights for integrating micro-scale flow management in public space with broader urban planning strategies for transport infrastructure. It underscores the need to design public spaces that consider the subtle power dynamics emerging from the interplay between everyday practices and the socio-material configuration of space.
最近关于公共交通作为公共空间的讨论在以公共交通为导向的城市中尤为重要,在这些城市中,城市设计深刻地塑造了连通性和行人流量。诸如目的地整合、节点操作和私有化基础设施(包括人行道和交通系统)等策略会显著影响这些模式。本研究结合轻推理论和实践理论,探讨了在地铁站向公众开放准公共付费区域的假设场景下,行人的反应。利用香港三对相互连接的地铁站——两对由私人付费人行道连接(表明偏好),另一对由公共免费人行道连接(显示偏好)——进行问卷调查(N=419)和离散选择建模。结果表明,恶劣的天气,如下雨或极端温度,是选择受天气保护的地下通道的主要驱动因素。然而,距离和距离不能一致地预测路线选择,这表明不太明显的因素的影响。例如,沿途的零售商店巧妙地鼓励人们使用,即使是对购物兴趣有限的人,也可以作为方便或熟悉的标志。有专用地下出口的路线也促进了地下的使用。这些发现揭示了深思熟虑的设计、根深蒂固的习惯和象征意义是如何共同影响行人的决定的。通过揭示行人运动的社会政治动态,本研究有助于研究路线话语的政治,并为将公共空间的微观流量管理与更广泛的城市交通基础设施规划策略相结合提供定量见解。它强调了公共空间的设计需要考虑日常实践和空间的社会物质配置之间的相互作用所产生的微妙的权力动态。
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引用次数: 0
Assessing urban-scale spatiotemporal heterogeneous metro station coverage using multi-source mobility data 基于多源移动数据的城市尺度时空异质性地铁站点覆盖评估
IF 6.1 2区 工程技术 Q1 ECONOMICS Pub Date : 2024-12-07 DOI: 10.1016/j.jtrangeo.2024.104081
Guozheng Zhang, Dianhai Wang, Mengwei Chen, Jiaqi Zeng, Zhengyi Cai
Assessing the coverage of metro stations is crucial for evaluating and guiding metro construction. Existing methods mainly rely on surveys to obtain the coverage radii by fitting the first-mile distance distribution of metro passengers, which is costly and time-consuming to capture the spatiotemporal heterogeneity at the urban scale. Daily generated multi-source mobility data offers the possibility of a broad and low-cost assessment. This study proposes a framework to assess the coverage radius of metro stations using metro smart card data and Baidu population heatmap data. First, we build a nested logit model to model travelers' mode choice and station selection behaviors, considering both the competitiveness of the metro over other modes and travelers' sensitivity to first-mile distance. We then establish the relationship between choice probability and metro station inflows, calibrating the parameters through a genetic algorithm-based bi-objective optimization. Finally, we propose a novel metro station coverage assessment method using a distance-decay function that describes the cumulative mode choice proportions. An empirical analysis is conducted using Hangzhou, a sizeable monocentric city in China. The results reveal significant tidal patterns in travel behavior parameters. During the morning peak, suburban travelers rely more on the metro, whereas evening peak reliance is more pronounced among urban center travelers. This aligns with Hangzhou's commuting patterns. Moreover, significant differences occur in attraction patterns between downtown and suburban stations. Suburban metro stations exhibit larger coverage radii due to the lack of convenient alternative transport modes, a result that existing methods fail to capture. This evaluation framework can be extended to other cities, offering valuable insights for enhancing metro services.
地铁车站覆盖评估是评价和指导地铁建设的关键。现有的方法主要是通过调查拟合地铁乘客第一英里距离分布来获得覆盖半径,这种方法在城市尺度上捕捉时空异质性成本高、耗时长。每天生成的多来源移动数据提供了广泛和低成本评估的可能性。本研究提出了利用地铁智能卡数据和百度人口热图数据评估地铁车站覆盖半径的框架。首先,我们建立了一个嵌套的logit模型来模拟出行者的方式选择和站点选择行为,同时考虑地铁相对于其他方式的竞争力和出行者对第一英里距离的敏感性。然后,我们建立了选择概率与地铁站流入量之间的关系,并通过基于遗传算法的双目标优化来校准参数。最后,我们提出了一种新的地铁站点覆盖评估方法,该方法使用距离衰减函数来描述累积模式选择比例。本文以中国规模较大的单中心城市杭州为例进行了实证分析。结果揭示了旅行行为参数中显著的潮汐模式。在早高峰期间,郊区旅客更多地依赖地铁,而在晚高峰期间,市中心旅客对地铁的依赖更为明显。这符合杭州的通勤模式。此外,市区和郊区车站的吸引模式也存在显著差异。由于缺乏方便的替代交通方式,郊区地铁站的覆盖半径更大,这是现有方法无法捕捉到的结果。这一评估框架可以推广到其他城市,为改善地铁服务提供有价值的见解。
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引用次数: 0
An adaptive OD flow clustering method to identify heterogeneous urban mobility trends 自适应OD流聚类方法识别异质城市交通趋势
IF 6.1 2区 工程技术 Q1 ECONOMICS Pub Date : 2024-12-07 DOI: 10.1016/j.jtrangeo.2024.104080
Xiaogang Guo, Mengyuan Fang, Luliang Tang, Zihan Kan, Xue Yang, Tao Pei, Qingquan Li, Chaokui Li
Origin-Destination (OD) flow, as an abstract representation of the object's movement or interaction, has been used to reveal the movement patterns of human activities and the coupling process of the human-land system. As a developing spatial analysis method, OD flow clustering can be used to identify the dominant trends and spatial structures of urban mobility. However, urban flow exhibits universal heterogeneity, which is mainly manifested in irregular shapes, uneven distribution, and obvious scale differences. The existing methods are constrained by specific spatial scales and sensitive parameter settings, making it difficult to reveal heterogeneous urban mobility patterns within travel OD data. In this paper, we propose an OD flow analysis method that integrates spatial statistics and density clustering. This method can determine parameter values from datasets without manual intervention and adaptively identify multi-scale mixed OD flow clusters. In the simulation experiment, the proposed method accurately detects all preset OD clusters with less noise. It outperforms the baseline methods in terms of Silhouette Coefficient, V-measure, and Fowlkes Mallows index. As a case study, this method is applied to OD data from Chengdu, China, extracting 63 representative flow clusters and revealing the trends of heterogeneous urban mobility across different lengths and densities for public transit optimization.
起点-终点流作为物体运动或相互作用的抽象表征,已被用来揭示人类活动的运动模式和人地系统的耦合过程。OD流聚类是一种新兴的空间分析方法,可以用来识别城市交通的主导趋势和空间结构。但城市流具有普遍的异质性,主要表现为形状不规则、分布不均匀、规模差异明显。现有方法受限于特定的空间尺度和敏感的参数设置,难以在出行OD数据中揭示异质性的城市交通模式。本文提出了一种空间统计与密度聚类相结合的OD流分析方法。该方法可以在不需要人工干预的情况下从数据集中确定参数值,并自适应识别多尺度混合OD流簇。在仿真实验中,该方法能够准确地检测出所有预设OD簇,且噪声较小。它在轮廓系数、v值和Fowlkes Mallows指数方面优于基线方法。以成都市的OD数据为例,提取了63个具有代表性的流量集群,揭示了不同长度和密度的城市异质性交通趋势,为公共交通优化提供依据。
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引用次数: 0
Measuring the impacts of subway openings on location choice: Systematic evidence from service enterprises, Beijing 地铁开通对区位选择影响的测度——来自北京服务业企业的系统证据
IF 6.1 2区 工程技术 Q1 ECONOMICS Pub Date : 2024-12-06 DOI: 10.1016/j.jtrangeo.2024.104082
Guoqiang Feng, Tianle Wang, Zihong Huang
Studies concerning the location choices of enterprises are predominantly focus on manufacturing enterprises, with limited attention given to service enterprises. This paper examines Beijing, whose services account for more than 80 % of GDP, to ascertain whether enhanced accessibility through the expansion of subway network facilitates new service enterprises to capitalize on agglomeration economies, ultimately contributing to the transformation of the urban landscape. Using a matched dataset comprising 16,571 gird cells, each measuring 1 × 1 km in size, and information on newly registered service enterprises in Beijing from 2007 to 2018, we employ a mult-period difference-in-difference (DID) estimation methodology, leveraging exogenous shocks from the opening of new subway lines, to examine the causal relationship between subway openings and the location decision of service enterprises. Our findings indicate that the subway network positively influences the establishment of service enterprises, with a 53.8 % increase in newly registered service enterprises following the opening of a new subway line. Furthermore, the agglomeration effects of subway network are more salient for newly registered producer service enterprises, which tend to cluster in central areas, whereas consumer service enterprises demonstrate a preference for agglomeration in the city's periphery, thereby contributing to the reconfiguration of the city's urban structure.
关于企业区位选择的研究主要集中在制造业企业,对服务业企业的研究较少。本文以服务业占GDP的80%以上的北京为研究对象,探讨通过地铁网络的扩张提高可达性是否有助于新的服务业企业利用集聚经济,最终促进城市景观的转变。本文利用16571个网格单元(每个网格单元的尺寸为1 × 1 km)和2007 - 2018年北京新注册服务企业的信息,采用多期差分估计方法,利用新地铁线路开通带来的外生冲击,检验地铁开通与服务企业选址决策之间的因果关系。研究发现,地铁网络对服务业企业的设立有正向影响,新开通地铁后,新注册的服务业企业增加53.8%。此外,地铁网络的集聚效应对新注册的生产性服务业企业更为显著,这些企业倾向于向中心区域集聚,而消费服务业企业则倾向于向城市外围集聚,从而促进了城市结构的重构。
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引用次数: 0
Potential risk factors of child pedestrian crashes after-school hours in Seoul, Korea 韩国首尔放学后儿童行人撞车的潜在危险因素
IF 6.1 2区 工程技术 Q1 ECONOMICS Pub Date : 2024-12-06 DOI: 10.1016/j.jtrangeo.2024.104084
Jihun Oh, Jeongseob Kim
Considering child pedestrian safety is increasingly recognized as a critical social concern, this study investigates the patterns and potential risk factors associated with child pedestrian crashes in Seoul, Korea, specifically during after-school hours, which have received relatively little attention. Spatiotemporal patterns of child pedestrian crashes and their daily activity patterns were examined through a descriptive analysis of household travel records and hotspot analysis of crash incidences. Zero-inflated negative binomial models were further estimated to identify potential risk factors affecting child pedestrian crash incidents by time of day. The findings indicate a significant disparity in patterns and risk factors between child pedestrian crashes before and after school hours, possibly explained by the proximity to major travel destinations such as schools and Hagwons (i.e., private educational facilities). Although relevant policy efforts have primarily focused on nearby schools and home-to-school trips, this study provides evidence of potentially hazardous areas at times and locations other than schools. These insights contribute toward a deeper understanding of urban child pedestrian safety, emphasizing the need for comprehensive safety measures that cover children's daily routines.
考虑到儿童行人安全越来越被认为是一个重要的社会问题,本研究调查了韩国首尔儿童行人碰撞的模式和潜在危险因素,特别是在放学后,这一问题相对较少受到关注。通过家庭出行记录的描述性分析和碰撞事件热点分析,研究了儿童行人碰撞的时空格局和日常活动模式。进一步估计零膨胀负二项模型,以确定影响儿童行人碰撞事件的潜在危险因素。研究结果表明,儿童在上学前和放学后发生行人交通事故的模式和风险因素存在显著差异,这可能是由于学校和补习中心(即私立教育设施)等主要旅游目的地的邻近程度所致。虽然相关的政策努力主要集中在附近的学校和家到学校的旅行上,但这项研究提供了潜在危险区域在学校以外的时间和地点的证据。这些见解有助于更深入地了解城市儿童行人安全,强调需要采取涵盖儿童日常生活的综合安全措施。
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引用次数: 0
Addressing spatial heterogeneity and MAUP in urban transport geography: A multi-scale analysis of accessibility and warehouse location 城市交通地理学的空间异质性与MAUP:可达性和仓库选址的多尺度分析
IF 6.1 2区 工程技术 Q1 ECONOMICS Pub Date : 2024-12-05 DOI: 10.1016/j.jtrangeo.2024.104078
Carlos David Pedrosa Pinheiro, Jesus Gonzalez Feliu, Bruno Vieira Bertoncini
This research delves into the intricate spatial interplay between the siting of urban warehouses and accessibility within Fortaleza, Brazil, employing Multiscale Geographically Weighted Regression (MGWR) across varied Basic Spatial Units (BSUs). It unveils a nuanced relationship between the density of warehouses and accessibility, marked by significant variations across BSUs. The findings highlight distinct spatial distributions for large and small warehouses: large warehouses tend to aggregate near key transport arteries for strategic benefits, whereas small warehouses are more evenly dispersed throughout the city. The study accentuates the critical role of transportation, land use, temporal, and individual accessibility components in influencing warehouse density. These revelations are pivotal for shaping urban transport policies, indicating the need for finely calibrated, location-specific interventions to tackle the complexities introduced by warehouse locations on urban accessibility and operational efficiency. By shedding light on the nuanced spatial dynamics between warehouse locations and accessibility factors, this study paves the way for fostering more effective urban freight transport solutions, advocating for policies tailored to the unique demands and characteristics of urban environments.
本研究采用多尺度地理加权回归(MGWR)分析不同基本空间单元(bsu),深入研究了巴西福塔莱萨城市仓库选址与可达性之间复杂的空间相互作用。它揭示了仓库密度和可达性之间的微妙关系,以bsu之间的显著差异为标志。研究结果强调了大型和小型仓库的不同空间分布:为了战略利益,大型仓库倾向于聚集在主要交通干线附近,而小型仓库则更均匀地分布在整个城市。该研究强调了交通、土地利用、时间和个体可达性因素在影响仓库密度中的关键作用。这些发现对于制定城市交通政策至关重要,表明需要精确校准、针对特定地点的干预措施,以解决仓库位置对城市可达性和运营效率带来的复杂性。通过揭示仓库位置和可达性因素之间微妙的空间动态,本研究为促进更有效的城市货运解决方案铺平了道路,倡导针对城市环境独特需求和特征的政策。
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引用次数: 0
Railway expansions and human capital growth: A 20-year causal analysis in Tokyo 铁路扩张与人力资本增长:东京20年因果分析
IF 6.1 2区 工程技术 Q1 ECONOMICS Pub Date : 2024-12-05 DOI: 10.1016/j.jtrangeo.2024.104076
Junya Kumagai, Sunbin Yoo, Shunsuke Managi
Our study uncovers the causal link between railway expansions in Tokyo and a significant increase in the number of university graduates and high-skilled workers, with the effects being notably more pronounced in areas initially having lower proportions of those groups. We examine the mechanisms behind this phenomenon by (1) demonstrating how railway expansions attract university graduates and high-skilled workers by reducing commute costs, (2) improve access to universities, and (3) boost railway ridership. Our analysis employs both a difference-in-differences framework and a market access approach to separately evaluate the gentrification near new stations and the dispersion of human capital driven by enhanced network connectivity. The results reveal that university graduate rates and skilled worker rates rise by an average of 2.5 % and 1.4 %, respectively, due to improved connectivity. These findings underscore the value of railway expansion in fostering human capital development and provide critical insights for urban planners, policymakers, and transportation authorities, emphasizing the need to align transportation development with strategies for equitable urban growth.
我们的研究揭示了东京铁路扩建与大学毕业生和高技能工人数量显著增加之间的因果关系,在最初这些群体比例较低的地区,这种影响尤为明显。我们通过(1)证明铁路扩建如何通过降低通勤成本来吸引大学毕业生和高技能工人,(2)改善进入大学的机会,以及(3)提高铁路客流量来研究这一现象背后的机制。我们的分析采用了差异中的差异框架和市场准入方法,分别评估了新站附近的中产阶级化和由网络连通性增强驱动的人力资本分散。结果显示,由于连通性的改善,大学毕业生率和熟练工人率平均分别上升了2.5%和1.4%。这些研究结果强调了铁路扩张在促进人力资本发展方面的价值,并为城市规划者、政策制定者和交通管理部门提供了重要见解,强调了将交通发展与城市公平增长战略相结合的必要性。
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引用次数: 0
How do access and spatial dependency shape metro passenger flows 通道和空间依赖性如何影响地铁客流
IF 5.7 2区 工程技术 Q1 ECONOMICS Pub Date : 2024-12-03 DOI: 10.1016/j.jtrangeo.2024.104069
Mengying Cui , Lijie Yu , Shaoyu Nie , Zhe Dai , Ying-en Ge , David Levinson
Spatial imbalances in metro ridership significantly reduce the overall efficiency of metro system. Understanding the factors that contribute to metro ridership is essential for developing targeted strategies to improve ridership equity and overall system performance. This study introduces novel spatial dependency indices based on spatial weight matrices and land-use function complementarity to explore how access and inter-station spatial dependency affect metro ridership, focusing on station-level boardings and alightings, as well as station-to-station flows. Using the data from the Xi'an Metro, the findings indicate that access to employment and residence from metro stations considerably enhances station-level boardings and alightings. Walking access emerges as a critical factor, especially in the context of station-to-station travel. Furthermore, the analysis reveals a complementarity feature within the metro system, where increases in boardings (alightings) at one station leads to a higher demand at others. Stations that serve areas with complementary land-use functions tend to attract more travel between them. These findings emphasize the critical role of access and spatial dependency in enhancing transit planning and system efficiency.
地铁客流量的空间不平衡极大地降低了地铁系统的整体效率。了解影响地铁客流量的因素对于制定有针对性的策略以提高客流量公平性和整体系统性能至关重要。本研究引入基于空间权重矩阵和土地利用功能互补性的新型空间依赖指数,以车站层面的上下车和站间流量为重点,探讨通道和站间空间依赖对地铁客流量的影响。利用西安地铁的数据,研究结果表明,从地铁站进入就业和居住显著提高了站级上下车。步行通道成为一个关键因素,特别是在站到站的交通中。此外,分析还揭示了地铁系统的互补性特征,即一个车站上车(下车)的增加导致其他车站的需求增加。服务于具有互补土地利用功能地区的车站往往会吸引更多的客流。这些发现强调了可达性和空间依赖性在提高交通规划和系统效率方面的关键作用。
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引用次数: 0
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Journal of Transport Geography
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