A biosphere-integrated city treats green infrastructure not as decoration but as a working system that must keep pace with population density and resource footprint, or urban ecological health quietly declines district by district.
health(t+1) = health(t) + greenInvestment*regrowth - density*footprint
- District grid size — resolution of the simulated city, from neighborhood blocks up to whole districts.
- Green cover target — the fraction of green infrastructure (canopy, wetlands, green roofs) each district aims for.
- Population density — how many residents per district, driving resource demand and land-use pressure.
- Green infrastructure investment — funding for parks, urban forests and constructed wetlands that regenerate biosphere health.
Singapore's 'City in a Garden' program and Milan's Bosco Verticale are real-world attempts to keep this exact balance positive at scale — proving dense cities and substantial green cover aren't mutually exclusive.