Economic Dependence Relationship and Spatial Stratified Heterogeneity in the Eastern Coastal Economic Belt of China

Figure 3

Maximum spanning trees (MSTs) of the 12 provinces. (a) 2015. (b) 2016. (c) 2017. (d) 2018. (e) 2019. (f) 2020.

(a)

(b)

(c)

(d)

(e)

(f)