Explore: Soil Porosity

Porosity or void fraction is a measure of the void (i.e. "empty") spaces in a material, and is a fraction of the volume of voids over the total volume

understand porosity better a series of equations have been used to express the quantitative interactions between the three phases of soil. Macropores

properties of soil, in order of decreasing importance for ecosystem services such as crop production, are texture, structure, bulk density, porosity, consistency

well as water. Soil texture and structure strongly affect soil porosity and gas diffusion. It is the total pore space (porosity) of soil, not the pore

9 in) of soil. The weight of casts produced may be greater than 4.5 kg per worm per year. By burrowing, the earthworm improves soil porosity, creating

porosity, ϕ {\displaystyle \phi } . Water content can be directly measured using a drying oven. The oven-dry method requires drying a sample (of soil

to compaction. Porosity of a soil is a function of the soil's bulk density, which is based on the composition of the soil. Sandy soils typically have

more porosity. The earliest known soil classification system comes from China, appearing in the book Yu Gong (5th century BCE), where the soil was divided

degradation. Porosity refers to the air-holding capacity of the soil. See also characterisation of pore space in soil. Drainage: In soils of bad drainage

due to soil structure. Several techniques exist or have been suggested to improve soil structure, all of them tending to increase either porosity, organic