Research on the construction of comprehensive index evaluation system of tourism based on entropy method

As a flowing context, the Grand Canal is a unique large-scale linear living cultural heritage. The Jiangsu section of the Grand Canal is the core section of China's Grand Canal. It is the section with the most concentrated tourism resources and the highest grade of the Grand Canal, which plays an important role in the tourism development of Jiangsu Province. Based on the research of existing scholars, this paper adopts the ratio index to construct the tourismification level index system from four aspects: tourism resources elements, tourism market capacity elements, tourism industrial structure elements and tourism comprehensive effect elements. Then, the paper further uses the entropy method to measure the tourism level of 8 cities along the Grand Canal in Jiangsu Province, and analyzes the differences in their temporal-spatial evolution, which provides a reference and guidance for the urban development of these cities.