区域交通可达性时空格局演化及旅游效应

Regional Transportation Accessibility Spatial-Temporal Pattern Evolution and Tourism Effects

选择云南省为研究对象,加权平均旅行时间为指标,运用ArcGIS10.0网络分析技术测算云南省16个州市中心城镇1996、2001、2006和2011年的可达性值,在此基础上系统分析了云南省交通可达性时空演化格局,运用广义可加模型分析云南交通可达性时空演化的旅游效应。结果表明:1) 1996~ 2011年间,云南省可达性空间格局总体呈现以昆明为中心向外围区域递减的“核心–外围”模式;2) 云南省整体可达性明显优化,各中心城市节点的可达性水平均有大幅度的提升,但在不同阶段可达性优化程度不同;3) 不同时间段可达性变化空间格局差异较大,边缘地区可达性值提高幅度始终大于中心地区;4) 云南省交通可达性优化对旅游发展产生了正溢出效应。

Accessibility values based on 16 central towns in Yunnan Province in 1996, 2001, 2006 and 2011 have been measured using ArcGIS10.0 Network analysis technology choosing Yunnan Province as the research object, the weighted average travel time as an indicator. On the basis the article has done a systematic analysis of the Spatio-temporal evolution pattern of the traffic accessibility in Yunnan Province by using generalized additive models (GAM) to analysis the tourism effect about the spatio-temporal evolution pattern of the transportation accessibility in Yunnan Province. Results are shown as follows: 1) In the study period (1996-2011), the spatial pattern of accessibility in Yunnan Province shows a “core-periphery” model as a whole, and as the core area in Kunming has been gradually expanded;2) The accessibility of Yunan Province was optimized obviously;the accessibility level of major city nodes have greatly increased, but at different stages the degree is different;3) There has a greater difference about spatial pattern of accessibility change between different stages;4) The transportation accessibility optimization has positive spillover effects on the tourism development in Yunnan province.