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标题

可达性测算中速度参数的敏感性研究———以闽赣两省机场人口覆盖为例

作者

郑清菁 戴特奇 陶卓霖 颜区鹏

机构

北京师范大学地理学与遥感科学学院

摘要

可达性是地理学重要的研究内容. 在考虑时间距离的可达性测算过程中, 道路速度的设置会对可达性测算结 果产生影响, 但目前关于道路速度设置对可达性测算结果影响的研究仍较缺乏. 以福建和江西2省的机场可达性测算为例, 采用机场1.5h内覆盖的人口数量来衡量机场可达性, 比较不同道路速度设定情景下的可达性评价结果, 从而考察道路速度设置对可达性测算的影响. 结果显示: 道路速度设定的不同所导致的机场覆盖人口比例差异显著, 其中县道速度对覆盖人口比例的影响最大; 不同速度设定下各机场覆盖人口数排名前五的机场没有发生变化, 而排名后5位的机场发生了位次变化, 对道路速度的敏感性较高.

关键词

可达性; 速度; 人口覆盖; 福建; 江西

引用

郑清菁 戴特奇 陶卓霖 颜区鹏. 可达性测算中速度参数的敏感性研究 ———以闽赣两省机场人口覆盖为例 [J]. 北京师范大学学报(自然科学版),2016,52(4)497-500.

基金

国家科技支撑计划资助项目(2012BAJ22B05)

分类号

K901

DOI

10.16360/j.cnki.jbnuns.2016.04.016

Title

Sensitivity analysis of speed parameter in time-based accessibility measurement : a case study of Fujian and Jiangxi Provinces

Author

ZHENG Qingjing, DAI Teqi, TAO Zhuolin, YAN Qupeng

Affiliations

School of Geography , Beijing Normal University

Abstract

Accessibility is an important indicator in the evaluation of transport network . The shortest time between nodes is required in such evaluation . One popular technique of GIS analysis is often used to calculate time cost by setting road speed according to road level . In this process , the settings of road speed may have significant influence on accessibility evaluation . Althought his method has been applied widely in China , sensibility analysis of road speed impact on accessibility is seldom considered . In this paper , we investigated such effect in Fujian and Jiangxi Provinces . Population within 1.5h driving distance of an airport is defined as accessibility indicator . Accessibility evaluation is compared in 6 scenarios of different speed settings . The setting of speed is found to impact significantly on accessibility evaluation , both on absolute value of accessibility and on relative position of airport accessibility index . Relatively small values are especially affected more by speed setting . The speed on county road has a more powerful impact on accessibility value .

Key words

accessibility ; speed ; population covering ; Fujian Province ; Jiangxi Province

cite

ZHENG Qingjing, DAI Teqi, TAO Zhuolin, YAN Qupeng. Sensitivity analysis of speed parameter in time-based accessibility measurement : a case study of Fujian and Jiangxi Provinces [J]. Journal of Beijing Normal University (Natural Science), 2016,52(4):497-500.

DOI

10.16360/j.cnki.jbnuns.2016.04.016

Copyright © 2014 Journal of Beijing Normal University (Natural Science)
Designed by Mr. Sun Chumin. Email: cmsun@mail.bnu.edu.cn