Fig. 1: Sources and distribution of heritage in the study area; NKU: National Key Cultural Relics Protection Units; WHS: World Heritage Sites; DUAL: Both National Key Units and World Heritage Sites.

The right panel presents the cities along the Jiangsu section of the Beijing-Hangzhou Grand Canal, color-coded according to their overall CTA scores. Colors range from dark red (highest CTA) to dark blue (lowest CTA).