Study on Site Selection of Riparian Greenway in Lhasa Based on Grey Relational Analysis

The Greenway plays an important role in easing the traffic pressure, increasing green space, enhancing the overall image of the city and increasing the tourism influence. As a famous tourist city with many green ecological resources and humanistic foundation, Lhasa, a core city in Tibetan areas, is the best base for greenway construction. The purpose of this paper is to propose the scientific site selection scheme of the first riparian greenway in Lhasa. It considered the specific conditions and characteristics of Tibet and then set up the index system for Lhasa. The improved grey relation analysis method based on analytic hierarchy process (AHP) is used to make up the defect of grey relation analysis where all of indexes are treated equally and makes the selection more scientific. Lastly, the optimal location scheme for the Lhasa Riparian Greenway is obtained, and the best plan is analyzed and proposed.