青海省县域经济发展与公路密度相关性分析

Research on the Correlation Analysis of County Economic Development and Highway Density in Qinghai Province

青海省地处青藏高原与黄土高原的过渡带,是典型的高山高原地形,其地理环境较大限制了当地交通的发展。青海省是丝绸之路经济带西部区域交通的战略枢纽,研究青海省县域经济发展与公路密度的相关性对于区域协调发展具有重要意义。本文通过相关性分析以及相应的P值检验发现:(1)2000—2018年青海省西宁市县域公路网密度始终最大,其他县域整体公路网密度随海拔高度增加而减小;(2)全省各县经济发展水平与公路网密度呈正相关,特别是低海拔地区经济发展水平与路网密度具有高度的相关性;(3)公路网与其经济发展不匹配,高海拔地区资源丰富,但公路网密度较低,导致运输费用较高,公路网发展缓慢,不利于全省对外和区域内资源的流通。

Qinghai Province is located in the transition zone between the Qinghai-Tibet Plateau and the Loess Plateau.Due to the typical alpine plateau terrain,its geographical environment has greatly restricted the development of local transportation.Qinghai Province is the hub of regional transportation in the western region of the Silk Road Economic Belt.Studying the correlation between the county economic development and highway density in Qinghai Province is of great significance to the coordinated development of the region.Through the correlation analysis and the corresponding P value test,it’s found that:(1)The road network density in Xining City,Qinghai Province was the largest from 2000 to 2018,and the overall road network density in other counties decreased with the elevation of altitude;(2)The economic development level of each county is positively correlated with the density of the road network across the province,especially the low-altitude areas;(3)The road network density does not match its economic development.The high-altitude areas are rich in resources,but the low density of road network leads to high transportation costs and slow development of the road network,which is not conducive to the circulation of resources outside and inside the region.