The study aimed to find a way to replace soil in different regions for ecological restoration. Researchers used a mix of baijiang soil, peat soil, and meadow soil to mimic mountain brown coniferous forest soil. They found that plant growth was best when the soil had a humus layer thickness of 40cm, a pH of 7.0, and an available nitrogen content of 80 mg/kg. These factors were crucial for creating the synthetic soil. The mountain brown coniferous forest soil had more gravel but less silt and clay on its surface, with a gravelly sandy loam texture.