Jianghua in context: Street-network sprawl trends

Jianghua in context

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
JianghuaHunan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Jianghua plotted against Hunan and China. While Hunan and China both followed a zig-zag trend with an overall increase, Jianghua's new street additions followed a zig-zag trend with an overall increase. Most recently, Jianghua's incremental SNDi rose from 3.0 to 3.3 between 1991-2005 and 2006-2020. In terms of the aggregate network, Jianghua ranked 30th out of 89 cities in Hunan and 593rd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.3
Rank in China
1044th of 1843
Rank in Hunan
54th of 89

Entire Network (Aggregate)

SNDi value
2.51
Rank in China
593rd of 1843
Rank in Hunan
30th of 89

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

What about similarly populated cities?

234<19751976–19901991–20052006–2020SNDi of street additions
234<19751976–19901991–20052006–2020SNDi of entire street network
JianghuaDatongGyeongju-si

In new street additions, Jianghua fluctuated in its street-construction patterns, while Datong fluctuated in its street-construction patterns and Gyeongju-si built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Jianghua and Gyeongju-si both became progressively more disconnected, while Datong fluctuated in connectivity. Jianghua and Gyeongju-si have been growing further apart in their street-network character since 1975.