Changjiang Li Autonomous County in context: Street-network sprawl trends

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Changjiang Li Autonomous County plotted against Hainan and China. The SNDi of new construction in Changjiang Li Autonomous County peaked in 1976-1990, compared to Hainan which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Changjiang Li Autonomous County's incremental SNDi fell from 2.06 to 1.55 between 1991-2005 and 2006-2020. In terms of the aggregate network, Changjiang Li Autonomous County ranked 1st out of 17 cities in Hainan and 355th out of 1843 in China as of 2020.

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

What about similarly populated cities?

• Abu al Shuquq, Egypt
• Tramandaí, Brazil
• Zarzis, Tunisia
• Welkite, Ethiopia
• Catbalogan, Philippines
• Beachwood, United States

While Abu al Shuquq and Welkite both built increasingly disconnected streets over time, Changjiang Li Autonomous County built increasingly disconnected streets from 1975 through 1976-1990, then improved in new street additions. Looking at the full network, Abu al Shuquq and Welkite both became progressively more disconnected, while Changjiang Li Autonomous County grew more disconnected from 1975 through 1976-1990, then improved. Notably, Changjiang Li Autonomous County had a more sprawly network than Welkite in 1975 but the two have since reversed their relative ranking.