Fig. 1: Study extent and environment of the upper, middle and lower reaches of the Qiantang River Poetry Road.

a Covers the scope of China’s map: the five-pointed stars on the map indicate Beijing, the capital of China; the solid concentric circles represent provincial-level administrative centers; the gray solid lines denote the boundaries of provinces, autonomous regions, or municipalities directly under the Central Government; the gray dash-dot lines stand for the boundaries of special administrative regions; and the gray-colored area represents the scope of Zhejiang Province, China. b Covers the scope of Zhejiang Province’s map: the concentric circles on the map indicate provincial-level administrative centers; the solid concentric circles represent prefecture-level city administrative centers; the black solid lines denote provincial boundaries; the blue-colored areas and irregular lines represent rivers, reservoirs, lakes, and canals; the combination of river channels and blue short solid lines evenly distributed perpendicular to the river channels represents canals; and the red dash-dot lines indicate the scope of the Qiantang River Basin in Zhejiang Province. c Covers the scope of the Qiantang River Basin in Zhejiang Province: the orange solid lines on the map represent the Upper South Source of the Qiantang River (Majin Creek); the purple solid lines denote the Upper North Source of the Qiantang River (Xin’an River); the green solid lines stand for the Middle Reaches of the Qiantang River; and the blue solid lines represent the Lower Reaches of the Qiantang River. The base map is sourced from the Standard Map of China (http://bzdt.ch.mnr.gov.cn/index.html), and the scope of the Poetry Road is determined according to Document Zhe Zheng Fa [2019] No. 22 of the Zhejiang Provincial Government of China.