A. open spaceOpen space refers to t

A. open spaceOpen space refers to the open, outward-looking and non-private surroundings, which are completely exposed to the sky and sunshine. In this space mode, plants use low shrubs and ground covers to divide the space, implying the edge of the interface. It has no limit on the field of vision and is mostly used for open sites and road landscapes. Due to the small scale of private gardens, this open space is commonly used in garden roads with wide viewing area.B. semi-open spaceOne or more sides of the semi-open space are closed by plants, which limits the permeability of the sight line and has a limiting effect on human actions and sight line. Its opening degree is small and its direction points to the open side. The semi-open space in private gardens is often some miniature leisure space, such as stone tables and chairs in corners. This miniature leisure space is semi-private and suitable for sitting with friends. It is generally composed of low shrubs or small trees with tree crowns lower than the sight plane. When planting, it is not suitable to be too dense to make the external scenery faintly visible. If one or two ornamental plants are dotted, the environment will be more relaxed and pleasant.C. coverage spaceCovering space is a space with a dense crown of shade trees to form a top cover and an open perimeter. The horizontal horizon of this kind of spatial pattern is not limited, it has no guidance to actions and has no clear spatial scope, but people can feel shelter and coverage from it. If the house garden has a large area, it can be made up of five or six large trees, which is suitable for many people. The smaller members of the homestead can plant a large tree or rattan with a full canopy in order to enjoy it in a few years.D. completely enclosed spaceCompletely enclosed space not only has the characteristics of covering space, but also the vertical plane is closed, surrounded by small and medium plants. This kind of space is completely closed, non-directional, with a strong sense of concealment and isolation, the image of the space is very clear. Completely closed space is more private, because private gardens are mostly a combination of residential gardens, but they emphasize the protection of space, so this kind of space pattern is rare. Occasionally, there are people who build pavilions and camps on the mountain, but most of them are not completely closed.