基于路网结构的贵阳市旅游景点可达性分析

Accessibility Analysis of Scenic Spots in Guiyang Based on Land Traffic Network

针对贵阳市内部旅游小交通建设滞后于对外大交通发展所导致的旅客“进得快,散得慢”的问题,基于城市交通路网结构,采用GIS可达性空间分析法,对贵阳市旅游景点可达性进行了定量评价.结果表明:贵阳市中心城区旅游景点的可达性整体较优,91.76%的区域旅游景点可达性在30 min之内,但其内部可达性分布差异较显著,具有明显的交通指向性特征;区域内98.15%的城镇居民可在30 min内到达最近的旅游景点,但各行政区城镇居民的出游便捷性存在较大差异;各旅游景点的服务面积、服务人口差异明显,城市核心区的旅游景点服务面积较小,但服务人口更多;以乡镇社区为基本计算单元的整体景点可达性呈现出以城市核心区为中心的不规则的圈层结构,距离骨干路网越远,可达性越差,可达性差异在各行政区内部、乡镇社区之间的表现较为显著;影响可达性的因素主要有旅游景点空间分布、路网结构的地区差异以及自然和人文环境.在此基础上,提出了可达性优化建议.

The traveler“arrive not as rapidly as they do when they leave in Guiyang City”,because the traffic construction within regions lag behind the development outside them.Aimed at this problem and based on the road network of urban traffic,quantitative evaluation is conducted in the accessibility of scenic spots in Guiyang City through adopting space analytical method of GIS.The results show that scenic spots in the central city of Guiyang has excellent overall accessibility.The accessibility of 91.76%of regional tourism scenic spots is within 30 minutes,with remarkable distributional difference in accessibility inside the regions.In a word,there is an evident traffic directionality characteristics.The nearest scenic spots are accessible to 98.15%towns folks within the region for less than 30 minutes,with huge difference in the convenience in traveling of urban residents in various administrative regions.There are huge differences in service area and service population in scenic spots,while those in central urban districts have small service area and large service population.The accessibility of overall scenic spots,with villages and towns communities as the their basic computing elements,presents irregular layer structure centred on central urban districts.In summary,the farther the community from the main road networks it is,the poorer the accessibility it is.There are obvious accessibility discrepancy among administrative regions and among villages and towns communities.The factors to influence the accessibility include spatial distribution of scenic spots,regional disparity of road networks as well as natural and cultural environment.Optimizing proposals on accessibility are raised on this basis.