Jiyang in context: Street-network sprawl trends

Jiyang in context

1234<19751976–19901991–20052006–2020SNDi of street additions
1234<19751976–19901991–20052006–2020SNDi of entire street network
JiyangShandong (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Jiyang plotted against Shandong and China. The SNDi of new construction in Jiyang peaked in 1991-2005, compared to Shandong which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Jiyang's incremental SNDi fell from 2.07 to 1.83 between 1991-2005 and 2006-2020. In terms of the aggregate network, Jiyang ranked 25th out of 124 cities in Shandong and 131st out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
1.83
Rank in China
171st of 1843
Rank in Shandong
24th of 124

Entire Network (Aggregate)

SNDi value
1.8
Rank in China
131st of 1843
Rank in Shandong
25th of 124

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

What about similarly populated cities?

369<19751976–19901991–20052006–2020SNDi of street additions
369<19751976–19901991–20052006–2020SNDi of entire street network
JiyangRantepaoBuligenyi

In new street additions, Jiyang built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Rantepao fluctuated in its street-construction patterns and Buligenyi built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Jiyang and Rantepao both became progressively more disconnected, while Buligenyi became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards.