Yuanyi 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 Yuanyi plotted against Ningxia Hui and China. The SNDi of new construction in Yuanyi followed a zig-zag trend with an overall decrease, compared to Ningxia Hui which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Yuanyi's incremental SNDi fell from 1.36 to 0.96 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yuanyi ranked 1st out of 15 cities in Ningxia Hui and 4th 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?

• Rembang, Indonesia
• Xiuyan, China
• Tinaquillo, Venezuela
• Gobindaganj, Bangladesh
• Minbya, Myanmar
• Adaba, Ethiopia

While Rembang and Gobindaganj both fluctuated in its street-construction patterns, Yuanyi fluctuated in its street-construction patterns in new street additions. For the full network, Yuanyi fluctuated in connectivity, while Rembang became progressively more disconnected and Gobindaganj fluctuated in connectivity. Yuanyi and Rembang have been growing further apart in their street-network character since 1975.