Spatiotemporal Characteristics and Resilience of Urban Network Structure during the Spring Festival Travel Rush: A Case Study of Urban Agglomeration in the Middle Reaches of Yangtze River in China

Figure 5

Dominant flow and node type distributions: (a) 2019; (b) 2020, and (c) 2021. The colors of lines represent the different city clusters. The blue and red nodes express population outflow and inflow, respectively. The size of nodes shows the degree of node symmetry: large (strong) and small (weak).

(a)

(b)

(c)