Gaochun in context: Street-network sprawl trends

Gaochun in context

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
GaochunJiangsu (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Gaochun plotted against Jiangsu and China. The SNDi of new construction in Gaochun was at its lowest in 1991-2005, compared to Jiangsu which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Gaochun's incremental SNDi rose from 1.81 to 2.24 between 1991-2005 and 2006-2020. In terms of the aggregate network, Gaochun ranked 19th out of 101 cities in Jiangsu and 291st out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.24
Rank in China
359th of 1843
Rank in Jiangsu
23rd of 101

Entire Network (Aggregate)

SNDi value
2.12
Rank in China
291st of 1843
Rank in Jiangsu
19th of 101

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

What about similarly populated cities?

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
GaochunAnand NagarDongcun

In new street additions, Gaochun built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Anand Nagar fluctuated in its street-construction patterns and Dongcun built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Gaochun became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Anand Nagar fluctuated in connectivity and Dongcun became progressively more disconnected. Notably, Gaochun had a more sprawly network than Dongcun in 1975 but the two have since reversed their relative ranking.