基于货运轨迹数据的城市间货物流动特征分析Analysis of Movement Characteristics of Inter-Urban Goods Based on Freight Trajectory Data
李秋萍;贾靖楠;张云菲;栾学晨;马若飞;
摘要(Abstract):
大规模的跨城市货运轨迹获取相对困难,城市间的货物流动规律与特征的相关研究较少。因此,以湖南省的货运轨迹数据为例,对湖南省内14个行政市、自治州之间货运物流的位移和空间交互特征进行了分析。结果表明:湖南省内各城市间货运物流的位移距离呈现双峰威布尔分布,在20 km和200 km处出现货运距离的高峰值。不同城市间的货运联系强度存在明显差异,少数城市对,如长沙-衡阳、长沙-常德等的货运联系强度在湖南省整个物流网络中占据主导地位。在缺乏真实货运联系数据时,重力模型和辐射模型都能基于静态的人口或国内生产总值(gross domestic product,GDP)统计数据对城市间的货运联系强度进行预测。重力模型预测值与真实值的相关系数达到0.84,较辐射模型准确度更高。
关键词(KeyWords): 城市间物流;位移特征;空间相互作用;货运轨迹数据
基金项目(Foundation): 国家自然科学基金(41971345,41971372,41671162);; 广东省自然科学基金(2020A1515010695)
作者(Authors): 李秋萍;贾靖楠;张云菲;栾学晨;马若飞;
DOI: 10.14188/j.2095-6045.2020559
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