Gulin in context: Street-network sprawl trends

Gulin in context

2.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
GulinSichuan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Gulin plotted against Sichuan and China. The SNDi of new construction in Gulin peaked in 1976-1990, 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, Gulin's incremental SNDi fell from 3.01 to 2.57 between 1991-2005 and 2006-2020. In terms of the aggregate network, Gulin ranked 52nd out of 98 cities in Sichuan and 1117th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.57
Rank in China
564th of 1843
Rank in Sichuan
23rd of 98

Entire Network (Aggregate)

SNDi value
3.12
Rank in China
1117th of 1843
Rank in Sichuan
52nd of 98

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

What about similarly populated cities?

234567<19751976–19901991–20052006–2020SNDi of street additions
234567<19751976–19901991–20052006–2020SNDi of entire street network
GulinMersaDanu Phyu

While Mersa and Danu Phyu both fluctuated in its street-construction patterns, Gulin built increasingly disconnected streets from 1975 through 1976-1990, then improved in new street additions. Looking at the full network, Mersa and Danu Phyu both fluctuated in connectivity, while Gulin grew more disconnected from 1975 through 1976-1990, then improved. Notably, Gulin had a more sprawly network than Mersa in 1975 but the two have since reversed their relative ranking.