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Bulk Density Values for Soil Types
Bulk Density Values for Soil Types. Both the United States and Canada use textural triangles to classify soils. Soil types are named according to the relative proportions of the soil components sand, silt and clay.
Both the United States and Canada use textural triangles to classify soils. Soil types are named according to the relative proportions of the soil components sand, silt and clay.
Function
Each soil type has distinct proportions of the soil components. This results in each type possessing unique physical characteristics.
Features
One of the key physical characteristics of soil is bulk density. Soil bulk density is defined as the mass of soil particles per volume of space occupied.
Method
Bulk density is relatively easy to calculate. First, soil cores of a given volume are taken in the field. Next, the soil sample is dried in an oven. The dried sample is weighed, and bulk density is calculated by dividing the mass of the oven-dried sample by the volume of the core sample.
Types
Bulk density is measured in g/cm3. The soil types and their corresponding bulk density are as follows: clay 1.25 g/cm?; silty clay 1.21g/cm?; silty clay loam 1.27 g/cm?; clay loam 1.30 g/cm?; sandy clay 1.34 g/cm?; silt loam 1.38 g/cm?; loam 1.43 g/cm?; sandy clay loam 1.40 g/cm?; sandy loam 1.51 g/cm?; loamy sand 1.63 g/cm?; sand 1.69 g/cm?.
Considerations
Bulk density ranges between 1.25 and 1.69 g/cm? for pure mineral soils. Soils high in organics and some friable clay may have bulk densities well below 1.0 g/cm?.
