中文摘要：

高速铁路的规划、建设与开通对沿线城市旅游产业发展的重要影响即是缩短城市旅游空间联系的时间距离，提升城市旅游交通的空间可达性，进而提高旅游城市内外部的产业经济联系与要素空间流动的强度。本文以贵广高铁为案例区域，采用可达性模型和GIS空间分析方法测度和构建了贵广高铁对沿线旅游城市的时间距离与可达性变化及其地域结构系统。实证表明：（1）贵广高铁开通后的各沿线旅游城市最短时间距离均表现出明显缩短态势；（2）贵广高铁开通后的从江县、三江县、都匀市、桂林市、肇庆市、怀集县、阳朔县、贵阳市和广州市等各沿线重点旅游城市可达性测度值变化率呈依次降低态势；（3）通过将沿线重点旅游城市可达性测度值在ARCGIS空间模块下分析，并确定了贵广高铁沿线不同等级重点旅游发展点和重点旅游发展轴的基础上，有机形成了2个三级贵州沿线旅游发展板块与广西沿线旅游发展板块、1个二级广东沿线旅游发展板块和1个一级贵广高铁旅游发展板块，进一步构建了贵广高铁影响下的旅游地域结构系统。上述结论为合理优化贵广高铁沿线旅游城市空间结构、协调贵广高铁旅游产业一体化发展提供科学依据。

英文摘要：

The important influence of the planning,construction and openingof the High-Speed Railway on the development of urban tourism is to shortenthe time distance of spatial connection of urban tourism,and to enhance thespatial accessibility of urban tourism traffic,and to improve further the industrialconnection between the central and external cities and the intensityof spatial flow of elements.Taking Guiyang-Guangzhou High-Speed Railway(GGHSR)as a typical area,this paper uses the accessibility model and GIS spatialanalysis to measure the influence of High-Speed Railway on temporal distanceof tourism cities and construct the regional structural system.The resultsshow that:①The shortest time distance of the tourism cities along the GGHSRis obviously shortened after the opening of the GGHSR.②The changing rate ofaccessibility of Congjiang,Sanjiang,Duyun,Guilin,Zhaoqing,Huaiji,Yangshuo,Guiyang,Guangzhou shows decreasing trend after the opening of the GGHSR.③The Grade III Guizhou tourism development plate and the Grade IIIGuangxi tourism development plate and the Grade II Guangdong tourism developmentplate and the Grade I Guiyang-Guangzhou High-Speed Railway tourism developmentplate along the GGHSR are formed based on the certainty of differentdegrade tourism development nodes and tourism development axises along theGGHSR,and the regional structure system of tourism cities along the GGHSR isconstructed.The above conclusions provide scientific foundation for enhancingreasonably the spatial structure of tourism cities along the GGHSR and coordinatingthe integrated tourism development along the GGHSR.