Research on Quality Evaluation of Landscape Resources and Its Spatial Visualization in the Chengdu-Chongqing Yangtze River Tourism Corridor

Abstract

The Chengdu-Chongqing Yangtze River Tourism Belt is a core area for the construction of the Yangtze National Cultural Park. Scientifically evaluating its landscape quality is of great significance for regional cultural and tourism integration and ecological value conversion. This paper constructs an 8-indicator evaluation system containing two dimensions of visual perception and resource endowment, coupling Analytic Hierarchy Process (AHP) and GIS spatial analysis technology to quantitatively measure and spatially visualize the corridor landscape quality. The results show that: (1) The spatial differentiation of landscape quality is significant, showing a gradient pattern of "High in East, Low in Middle, Stable in West". The high-value area is concentrated in the Fuling to Wushan section of Chongqing, and the low-value area is embedded in the Chongqing main city urban area. (2) Indicator weights show that Openness and Naturalness are the dominant factors, with a combined weight of over 42%, indicating that visual corridor permeability and ecological endowment authenticity are the core of quality evaluation. (3) The high-intensity urbanization process produces a "double shielding" effect on the core high-weight factors, which is the main cause of the "collapse" of landscape quality in the middle section. Based on this, a segmented differentiated control strategy of strict protection in the east section, restoration and improvement in the middle section, and optimization and enhancement in the west section is proposed, so as to provide a scientific basis for the planning of the Yangtze National Cultural Park.