Guanghan in context: Street-network sprawl trends

Guanghan in context

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
GuanghanSichuan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Guanghan plotted against Sichuan and China. The SNDi of new construction in Guanghan rose steadily, compared to Sichuan which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Guanghan's incremental SNDi rose from 2.15 to 2.73 between 1991-2005 and 2006-2020. In terms of the aggregate network, Guanghan ranked 7th out of 98 cities in Sichuan and 142nd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.73
Rank in China
678th of 1843
Rank in Sichuan
29th of 98

Entire Network (Aggregate)

SNDi value
1.83
Rank in China
142nd of 1843
Rank in Sichuan
7th of 98

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

1.522.53<19751976–19901991–20052006–2020SNDi of street additions
1.522.53<19751976–19901991–20052006–2020SNDi of entire street network
GuanghanRiohachaKasumbalesa

While Riohacha and Kasumbalesa both fluctuated in its street-construction patterns, Guanghan built increasingly disconnected streets over time in new street additions. Looking at the full network, Riohacha and Kasumbalesa both fluctuated in connectivity, while Guanghan became progressively more disconnected. Notably, Guanghan had a more connected network than Riohacha in 1975 but the two have since reversed their relative ranking.