Jiangyuan in context: Street-network sprawl trends

Jiangyuan 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
JiangyuanJilin (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Jiangyuan plotted against Jilin and China. The SNDi of new construction in Jiangyuan was at its lowest in 1991-2005, compared to Jilin which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Jiangyuan's incremental SNDi rose from 2.41 to 4.01 between 1991-2005 and 2006-2020. In terms of the aggregate network, Jiangyuan ranked 40th out of 47 cities in Jilin and 1443rd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
4.01
Rank in China
1406th of 1843
Rank in Jilin
32nd of 47

Entire Network (Aggregate)

SNDi value
3.66
Rank in China
1443rd of 1843
Rank in Jilin
40th of 47

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

What about similarly populated cities?

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
JiangyuanSangla HillZielona Gora

In new street additions, Jiangyuan built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Sangla Hill built increasingly disconnected streets over time and Zielona Góra built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Jiangyuan fluctuated in connectivity, while Sangla Hill became progressively more disconnected and Zielona Góra grew more disconnected from 1975 through 1991-2005, then improved. Jiangyuan and Sangla Hill have been converging in their street-network character since 1975.