green conservation area; urban conservation space
A designated zone under Japanese law (Urban Green Space Conservation Act) where development is restricted to preserve greenery and natural environment within or near urban areas.
Because this area is designated as a green conservation area, large-scale development is restricted.
The city plans to establish a new urban conservation space to protect the precious satoyama landscape.
緑地 means 'green space' or 'greenery area' in general, while 緑地保全地域 specifically refers to a legally designated conservation zone.
保全地域 is a broader term for any conservation area; 緑地保全地域 is a specific type under the Urban Green Space Conservation Act.
Compound of 緑地 (ryokuchi, 'green space') + 保全 (hozen, 'conservation') + 地域 (chiiki, 'area'). A modern legal term established under the Urban Green Space Conservation Act (都市緑地保全法).