Abstract:

This article is a study of tourism resources. Firstly we used GIS software to analyze the accessibility of tourism resources at the excellent level in Gannan State, Gansu Province. We used cell grids as evaluation units and multithematic spatial analysis. Tourism resources above level 3 and the highgrade road network in Gannan State were used as the data source. Spatial pattern of traffic accessibility was analyzed. Then we used ESDA and semivariogram method to find out the dominant factors of accessibility affecting the tourism resources. Secondly we used the GS+ software to analyze the spatial pattern of accessibility to all resources. And we used spatial variogram to analyze the intrinsic links between the various regions of accessibility. We found the accessibility of high level tourism resources was better than low level obviously. Furthermore the isochronous rings of high level resources were bigger than those of low level at the same conditions. This is because the high level resources were distributed around the road network; and the low level resources often had a bad transportation. For example, the 5th level resources Labrang Monastery is located in Provincial Highway 312, Langmusi is located in National Road 213. But 60% of the 4th level resources and 375% of the 3rd level resources are located in road network above the provincial highway. It explains why the accessibility of high level tourism resources is better. Finally we made a program using an ACO algorithm in Matlab to find the closed loop between each tourism resources at all levels. We extracted the shortest path of each resources based on transportation and DEM factor. The result showed that the route of ACO was approximately formed along the road network and valley. The distribution of itself, the location of transportation and terrain ruggedness were the main factors which affected tourism resources. Recently, the scenic of Gannan State is concentrated in 2 national roads. The resources constitute above 40% of statewide. Some tourism attractions and scenic have good accessibility and the others have bad accessibility. The article helps tourists make best choices to develop travel path conveniently