Lancang in context: Street-network sprawl trends

Lancang in context

33.544.55<19751976–19901991–20052006–2020SNDi of street additions
33.544.55<19751976–19901991–20052006–2020SNDi of entire street network
LancangYunnan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Lancang plotted against Yunnan and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Lancang's incremental SNDi rose from 3.18 to 4.81 between 1991-2005 and 2006-2020. In terms of the aggregate network, Lancang ranked 53rd out of 78 cities in Yunnan and 1374th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
4.81
Rank in China
1591st of 1843
Rank in Yunnan
65th of 78

Entire Network (Aggregate)

SNDi value
3.51
Rank in China
1374th of 1843
Rank in Yunnan
53rd of 78

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

What about similarly populated cities?

33.64.24.8<19751976–19901991–20052006–2020SNDi of street additions
33.64.24.8<19751976–19901991–20052006–2020SNDi of entire street network
LancangParbattaAjloun

In new street additions, Lancang fluctuated in its street-construction patterns, while Parbatta built increasingly disconnected streets from 1975 through 1991-2005, then improved and Ajloun built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Lancang fluctuated in connectivity, while Parbatta grew more disconnected from 1975 through 1991-2005, then improved and Ajloun grew more disconnected from 1975 through 1976-1990, then improved. Notably, Lancang had a more sprawly network than Parbatta in 1975 but the two have since reversed their relative ranking.