Which types of soil are found in Shandong’s uplands and lowlands?

The soils of Shandong are categorized based on their distribution in the province's upland and lowland regions.1

Upland Soils

The two major hill masses in Shandong are primarily covered by "Shandong brown soils," which include various brown forest and cinnamon-colored soils formed through sod processes and clay accumulation. A distinctive variant of these soils, known as recalcified soil—characterized by the deposit of calcium salts—is found along the northern perimeter of the central hill mass.1

Lowland and Plain Soils

Calcareous alluvial soils are the predominant type found throughout the lowlands and plains. These soils are generally fertile, with their quality often influenced by the duration of cultivation and proximity to urban centers, where the addition of human and animal waste creates rich, dark-colored soil. Much of the North China Plain area within the province is covered by silty alluvium.1

Additionally, a specific soil type called shajiang tu, or "sandy ginger soil," occurs in the lowest elevations of alluvial plains and areas subject to annual inundation. These soils are named for their lime concretions that resemble ginger roots and sometimes develop impervious limestone hardpan layers.1