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地形地貌是影响交通运输发展的基础性因素之一,但在现有的交通优势度评价模型中普遍被忽视.构建包括路网密度、可达性和区位优势度三方面的基础交通优势度评价模型,然后在其上加权包括海拔、坡度、地形起伏度等在内的地形修正系数,得到一个包含地形条件的改进交通优势度评价模型,对河南省126个县市的交通优势度进行评价.结果表明:全省交通优势度总体呈现东北高西南低的特点,中心城市和交通线路相交的县市有较强的对外辐射作用;河南省4个经济区之间交通优势度差异显著,自高到低排序依次为:中原城市群、豫北经济区、黄淮经济区、豫西经济区;加权地形修正系数后的交通优势度高值区向东部黄淮海平原移动,与未考虑地形条件的交通优势度评价结果相比,西部山地和丘陵地区交通环境被高估的情况有所改善.
Terrain and topography is one of the basic factors that affect the development of transportation, but it is generally neglected in the existing evaluation model of traffic dominance. The evaluation of basic traffic dominance including construction of road network density, reachability and location dominance Then the topographic correction coefficient including elevation, slope and topography is weighted to obtain an improved traffic dominance evaluation model with topographic conditions. The traffic dominance of 126 counties in Henan Province is evaluated. The results show that: the traffic dominance of the province shows the characteristics of low northeast and high southwest, and the counties and cities where the central city and the traffic line intersect have a strong external radiation effect; the traffic dominance difference among the four economic zones in Henan Province is significant, The order of low priority is: Zhongyuan urban agglomeration, Yubei economic zone, Huanghuai economic zone and western Henan economic zone. After the weighted topographic correction coefficient, the high value area of traffic dominance moved to the Huang-Huai-Hai Plain in the east, Traffic dominance evaluation results compared to the western mountains and hilly areas have been overestimated traffic conditions have improved.