Jiujiang in context: Street-network sprawl trends

Jiujiang 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
JiujiangJiangxi (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Jiujiang plotted against Jiangxi and China. The SNDi of new construction in Jiujiang was at its lowest in 1976-1990, compared to Jiangxi which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Jiujiang's incremental SNDi rose from 2.68 to 2.87 between 1991-2005 and 2006-2020. In terms of the aggregate network, Jiujiang ranked 34th out of 82 cities in Jiangxi and 690th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.87
Rank in China
792nd of 1843
Rank in Jiangxi
44th of 82

Entire Network (Aggregate)

SNDi value
2.63
Rank in China
690th of 1843
Rank in Jiangxi
34th of 82

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
JiujiangHuangdao DistrictRibeirao Preto

While Huangdao District and Ribeirao Preto both built increasingly disconnected streets over time, Jiujiang built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns in new street additions. Looking at the full network, Huangdao District and Ribeirao Preto both became progressively more disconnected, while Jiujiang became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Jiujiang and Huangdao District have been growing further apart in their street-network character since 1975.