Lixian in context: Street-network sprawl trends

Lixian in context

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
LixianHunan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Lixian plotted against Hunan and China. The SNDi of new construction in Lixian peaked in 1991-2005, compared to Hunan which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Lixian's incremental SNDi fell from 2.73 to 2.37 between 1991-2005 and 2006-2020. In terms of the aggregate network, Lixian ranked 11th out of 89 cities in Hunan and 290th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.37
Rank in China
432nd of 1843
Rank in Hunan
30th of 89

Entire Network (Aggregate)

SNDi value
2.12
Rank in China
290th of 1843
Rank in Hunan
11th of 89

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
LixianItabunaDa Lat

In new street additions, Lixian built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Itabuna built increasingly disconnected streets over time and Đà Lạt fluctuated in its street-construction patterns. For the full street network, though, all three cities follow the same trend.