The green belt is a policy designed to protect the land near the cities, born in England during the 30’s.
The land use planning allows agricultural and farming activities, wild natural areas, leisure activities...
The green belt helps to achieve local food security, preserve the landscape, conserve biodiversity, protect the ecological integrity and provide recreation areas nearby urban centres.
There are green belts where the agriculture and farming activities are considered, while there are others where the agriculture is not promoted.
The yield that is produced on the green belts, is sold in the local farmer markets. Many areas have recovered local agricultural products, for instance in Frankfurt green belt are growing apples to produce apple wine (a kind of cider).
The green belts also provided open spaces for walk, for do sports (jogging, cycling, ride horse, etc) and enjoy with the natural values (forest, meadows, etc) .
The first green was established in London (UK) in 1938. The biggest is British Columbia Agricultural Land Reserve (CA) around 4.760.703 hectares.
In Germany has a green belt that followed the iron curtain (the border between Germany, Federal Republic and Germany Democratic Republic).
All the green belts have the same foes the urban expansion. The growths of cities collide with the preservation of open spaces, natural values (biodiversity) and agricultural activities. The land planning authorities have to work to find a balance between urban growth and the green belt protection.