Changtu in context: Street-network sprawl trends

Changtu in context

2.83.54.24.9<19751976–19901991–20052006–2020SNDi of street additions
2.83.54.24.9<19751976–19901991–20052006–2020SNDi of entire street network
ChangtuLiaoning (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Changtu plotted against Liaoning and China. The SNDi of new construction in Changtu peaked in 1976-1990, compared to Liaoning which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Changtu's incremental SNDi fell from 4.76 to 2.64 between 1991-2005 and 2006-2020. In terms of the aggregate network, Changtu ranked 56th out of 61 cities in Liaoning and 1559th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.64
Rank in China
620th of 1843
Rank in Liaoning
23rd of 61

Entire Network (Aggregate)

SNDi value
4.04
Rank in China
1559th of 1843
Rank in Liaoning
56th of 61

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

What about similarly populated cities?

2.73.64.55.4<19751976–19901991–20052006–2020SNDi of street additions
2.73.64.55.4<19751976–19901991–20052006–2020SNDi of entire street network
ChangtuHukouXiaolong

In new street additions, Changtu and Hukou both built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Xiaolong fluctuated in its street-construction patterns. For the full network, Changtu and Hukou both grew more disconnected from 1975 through 1991-2005, then improved, while Xiaolong fluctuated in connectivity. Changtu and Hukou have been converging in their street-network character since 1975.