Spatial-temporal Analysis Of Comprehensive Accessibility For Scenic Highway Network

In China, the tourism is developing rapidly, and the demand of tourism isincreasing constantly. Highway traffic is one of the most important channel of tourismtraffic system, and its convenience directly affects tourism demand, thus take effect onthe development of tourism. The study on highway network accessibility can revealthe convenience of scenic highway network, and provide the guideline for travellersto draw up tourist routes and tourism planners to make the traffic plan.In order to analyze the comprehensive accessibility for Jinggangshan scenichighway network, this paper elected different target nodes such as scenic spots,tourism service facilities, highway interchanges and traffic distribution centers.Considering the importance of various kinds of target nodes, the paper uses weightedaverage travel time evolution model. Due to the particular nature of the study area, wedefined different geomorphic units based on DEM data to consider the influences ofspeed caused by terrain. Considering the tourism seasonality, we do the research ofthe influences of speed caused by tourism season base on field investigation.The results show that:1) The general level of accessibility seems good, exceptthe accessibility to highway interchanges.2) The accessibility to scenic spots presentsthe ’ Center-Periphery ’ pattern. The accessibility to highway interchanges form ahigh-value region composed of northeast area and channel along Jingmu high speed.The spatial pattern of accessibility to tourism service facilities and traffic distributioncenters is similar to the comprehensive accessibility. They all present ’ Center&northeast-northwest&southwest ’ pattern. Most importantly, the accessibility todifferent target nodes all follows spatial attenuation regularity and high-grade roaddirectional features.3) Tourist season has significant influence on the level of theaccessibility. At tourist season, the accessibility changes obviously.4) The spatialdistributions of accessibility are anastomosed with terrain greatly. It performs that thelevel of accessibility distributed in flat ground usually form a low-value region andthe accessibility distributed in steep mount or cliff usually form a high-value region.Based on the results, we summarize the factors which affect the spatial distribution ofaccessibility and propose some recommendations to improve the level of accessibility.