SOIL WATER CONTENT, BULK DENSITY AND POROSITY•Soils are often described and classified by their structure and particle size.• Bulk density and pore space or porosity provide a more useful physical description of soil.• Soil bulk density is a measure of soil compaction and strength.• Porosity also provides some estimate of compaction, and the maximum space available for water (at saturation) or air.Read: Chapter 1 (p. 12-17), and 6 (p. 93-105) — Introduction to EnvironmentalSoil Physics
has intentionally blurred sections.
Sign up to view the full version.
SOIL WATER CONTENT, BULK DENSITY AND POROSITY (cont.)Bulk Density (Db ): The mass of dry soil (Ms ) per unit bulk volume (Vt ).Db = Ms /VtVt = Vs + Va + VwAirSoilBulk Specific Gravity (Dsb ): The ratio of the Db of a soil to the mass of a unit volume of water (Dw ).Dsb = Db /Dw[NOTE: Dw . 1 Mg/m3 or 1,000 kg/m3 ]