Hechi in context: Street-network sprawl trends

Hechi 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
HechiGuangxi (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Hechi plotted against Guangxi and China. The SNDi of new construction in Hechi rose steadily, compared to Guangxi which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Hechi's incremental SNDi rose from 3.43 to 5.0 between 1991-2005 and 2006-2020. In terms of the aggregate network, Hechi ranked 35th out of 63 cities in Guangxi and 1186th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
5.0
Rank in China
1633rd of 1843
Rank in Guangxi
52nd of 63

Entire Network (Aggregate)

SNDi value
3.21
Rank in China
1186th of 1843
Rank in Guangxi
35th of 63

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
HechiLowellBethlehem

In new street additions, Hechi built increasingly disconnected streets over time, while Lowell fluctuated in its street-construction patterns and Bethlehem built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full street network, though, all three cities follow the same trend. Hechi and Lowell have been growing further apart in their street-network character since 1975.