As the northwest region's advancement in urbanization has improved, the contradiction between urbanization and the fragile ecological environment has been gradually resolved. Facing the constraint of regional fragile ecological pressures, northwestern cities must create new ecological processes by using resilient designs. It is necessary to promote an organic ease construction mode, which is proper for the ecological matrix space in ecological construction of the northwestern landscape. In this research, which aims to solve problems and conflicts between the plant landscape design and site habitat conditions, we used the experimental method for plant landscape construction and soil optimization based on the previous theory and foundation of habitat-site design. We established the research framework as "natural plant community investigation experimental base simulation database construction." First, based on natural plant community research, the ecological prototype of the near natural plant community was quantized and evaluated, and the database was established; second, the plant community fabric was constructed, and the soil optimization technique was tested by using a "habitat island," the purpose of which was to create a stably structured, low-maintenance, drought-adaptive, water-resistant, and beautiful plant community model to screen the suitable soil medium ratio and mulching type for plant growth. Finally, following the "artificial intervention, natural formation" design idea, the practice of habitat unit construction and established database of the plant community structure model was carried out to provide theoretical and technical support for the plant landscape construction and soil optimization of habitat construction in the northwestern green space.
Keywords: Adaptive design; Habitat-site design; Plant landscape; Resilience; Soil optimization technology.