Xupu in context: Street-network sprawl trends

Xupu in context

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
XupuHunan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Xupu plotted against Hunan and China. The SNDi of new construction in Xupu peaked in 1976-1990, compared to Hunan which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Xupu's incremental SNDi fell from 4.76 to 2.34 between 1991-2005 and 2006-2020. In terms of the aggregate network, Xupu ranked 76th out of 89 cities in Hunan and 1548th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.34
Rank in China
415th of 1843
Rank in Hunan
28th of 89

Entire Network (Aggregate)

SNDi value
3.99
Rank in China
1548th of 1843
Rank in Hunan
76th of 89

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

What about similarly populated cities?

123456<19751976–19901991–20052006–2020SNDi of street additions
123456<19751976–19901991–20052006–2020SNDi of entire street network
XupuJoypurhatUmm Hajar

In new street additions, Xupu built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Joypurhat fluctuated in its street-construction patterns and Umm Hajar built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Xupu grew more disconnected from 1975 through 1991-2005, then improved, while Joypurhat fluctuated in connectivity and Umm Hajar became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Xupu and Umm Hajar have been converging in their street-network character since 1975.