Which principle focuses on limiting development on untouched land?

The principle that focuses on limiting development on untouched land is centered around the idea of preserving greenfields, which are undeveloped, natural areas. This principle supports the conservation of open spaces, natural ecosystems, and agricultural lands, emphasizing the importance of protecting these areas from urban sprawl and development pressures.

By discouraging development on greenfields, planners and designers aim to reduce habitat destruction, maintain biodiversity, and protect natural resources. This approach not only helps preserve the ecological integrity of natural landscapes but also promotes sustainable land use practices, encouraging the development of existing urban areas instead of encroaching on untouched land.

The other principles mentioned relate to resource use, promoting higher density and mixed-uses in urban areas, and environmental restoration, but they do not specifically address the issue of protecting untouched land from development in the same way that discouraging development on greenfields does.