Fig. 2

Sources: authors own work.
Visual perception score points of the study area and 32 water conservancy industrial heritages. shows the basic maps of China and Jiangsu Province, which are sourced from the “Maps” version of the BIGEMAP GIS office software purchased by the first author. (You can access this software link) http://www.bigemap.com/ The first author used the software for secondary drawing, which is a composite effect of base map and self drawing.