Shandong brown soil

Shandong brown soils are a primary soil category in the Shandong province of China, predominantly found in upland regions. These soils are characterized by forest and cinnamon-coloured types, developed through clay accumulation and sod processes. A specific variation, recalcified soil, appears on the northern edges of the central hill mass. In contrast, calcareous alluvial soils are prevalent in lowlands and plains, generally fertile and enriched by cultivation and proximity to urban areas.1

Another distinct soil type is the subsurface shajiang tu, or "sandy ginger soil," found in central and western Shandong. This soil occurs in low-lying alluvial plains and areas subject to annual inundation, characterized by lime concretions resembling ginger roots and sometimes an impervious layer of limestone hardpan. These soils are crucial for agriculture, supported by extensive irrigation and soil conservation efforts in the province.12