Landscape and open space. There shall be a minimum of 25% open space for the entire development, which shall be exclusive of stormwater management areas, roadways, driveways, buildings, paved surfaces of parking areas, and utility facilities. Such areas may be left in a natural state or landscaped for aesthetics or functional use. Landscaped and open space areas shall be designed to coordinate development uses, buffer dissimilar uses, protect natural and environmental features, separate buildings, prevent erosion and accommodate drainage, ensure proper light and ventilation around buildings and/or link development elements.