Huangchuan in context: Street-network sprawl trends

Huangchuan in context

1.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
1.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
HuangchuanJiangsu (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Huangchuan plotted against Jiangsu and China. The SNDi of new construction in Huangchuan rose steadily, compared to Jiangsu which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Huangchuan's incremental SNDi rose from 2.67 to 2.92 between 1991-2005 and 2006-2020. In terms of the aggregate network, Huangchuan ranked 33rd out of 101 cities in Jiangsu as of 2020.

New Street Additions (2006–2020)

SNDi value
2.92
Rank in Jiangsu
52nd of 101

Entire Network (Aggregate)

SNDi value
2.38
Rank in Jiangsu
33rd of 101

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

What about similarly populated cities?

0.91.82.73.6<19751976–19901991–20052006–2020SNDi of street additions
0.91.82.73.6<19751976–19901991–20052006–2020SNDi of entire street network
HuangchuanSarangpurMargram

In new street additions, Huangchuan built increasingly disconnected streets over time, while Sarangpur built increasingly disconnected streets from 1975 through 1976-1990, then improved and Margram fluctuated in its street-construction patterns. For the full network, Huangchuan became progressively more disconnected, while Sarangpur grew more disconnected from 1975 through 1976-1990, then improved and Margram fluctuated in connectivity. Huangchuan and Sarangpur have been converging in their street-network character since 1975.