区域农产品物流交通量分布预测系统的设计
2016-12-17林敏敏陈洁莹陈闽敏
林敏敏+陈洁莹+陈闽敏


摘要:为了预测城市区域内未来年份的物流交通量分布情况,选择Fratar数学模型开发了计算程序。以南平市农产品物流交通量分布预测为例,通过分析GIS地图,把南平市划分为多个物流小区,调查获得当前年份的交通分布表(OD表),预测未来年份各小区的物流发生量和吸收量(PA表),最后应用Fratar数学模型实现了短期预测,获得了2017年的OD表。实际应用效果证明,用Fratar法进行城市区域物流交通量的短期预测,操作便捷,调查工作量小,适宜物流规划基层人员使用。
关键词:区域物流;交通分布;物流交通量;短期预测
中图分类号:S377:U412 文献标识号:A 文章编号:1001-4942(2016)11-0149-04
Abstract In order to forecast the logistics traffic volume distribution in the future years within the urban area, the Fratar model was used to develop an application program. Taking the Nanping City as an example, the logistics traffic volume distribution forecast system for agricultural products divided the Nanping City into several logistics districts through analyzing the GIS map. Then, the Origin and Destination (OD) Table of the current year was obtained to forecast the Production Attraction (PA) Table of each district in the coming years. Finally, the Fratar mathematical model was used for short-term forecast to obtain the OD Table of 2017. Practical applications proved that the investigation workload of Fratar method was relatively light. It was convenient to operate and suitable for the use of basic logistics planners.
Keywords Regional logistics; Traffic distribution; Logistics traffic volume; Short-term forecast
以分析农产品物流的流向、流量为例,把城市城区及郊区划分为多个物流小区,每个物流小区都可能会生产农产品向其它小区供应,也可能会吸收其它小区生产的农产品,小区内部也可能会自我消化一部分本小区生产的农产品,这样就形成了复杂的农产品物流量交通分布[1]。
区域内农产品物流的交通分布可以用OD表(Origin and Destination Table)来表示,表中记录了两两小区之间以及小区内部的物流运输量[2]。除了农产品外,其它行业的物流甚至居民出行都可以构建相应的OD表,各行业的物流及居民出行流汇集形成了城市的交通流,当某些区域的交通流量超过了道路通行能力,就形成了城市拥堵。
为了实现智慧城市、智慧物流,需要合理利用城市土地资源,需要对未来年份的城市交通分布进行预测,从而提前对道路及物流设施进行合理规划。……
