下沉日式景观平面

Quick answer：

The term '下沉日式景观平面' refers to a sunken Japanese-style landscape design plan. In this context, '下沉' means sunken or below ground level, indicating a landscape feature that is partially or entirely below the surrounding ground. Japanese-style landscape design often incorporates elements like stone patios, rock gardens, water features, and traditional plants. A sunken plan would typically feature these elements in a lower level, creating a more intimate and secluded space.