Permeability, Biology


Permeability is the ability of a soil to transmit water or air. Permeability or infiltration rate is measured in terms of the rate of water flow through the soil in a given period of time. Sandy soils are highly permeable because water drains rapidly. But soils with relatively small particle sizes are relatively less permeable. For example, water infiltration through a clay soil is extremely slow. This can cause water to accumulate at the surface or within the body of the soil resulting in whter-logging. The amount of moisture capable of percolating completely through the soil is largely dependent upon the permeability of the middle and lower horizons of soil. When either of these is impermeable, the upper layers can quickly become saturated with water, resulting in runoff or lateral movement of water through the soil. Soil erosion is the normal consequence in sloping areas while flat sites may suffer from flooding to various degrees.

Posted Date: 12/11/2012 2:19:39 AM | Location : United States

Related Discussions:- Permeability, Assignment Help, Ask Question on Permeability, Get Answer, Expert's Help, Permeability Discussions

Write discussion on Permeability
Your posts are moderated
Related Questions

Which are the types of neurons that participate in the spinal arch reflex? Where are their cell bodies situated? In the arch reflex first a sensory neuron located in the gangli

Q Is the tubular-dorsal nervous system of chordates associated to radial or lateral symmetry? How does that explain the complexity level of the nervous system reached by the verteb

fish liver oil is rich in which vitamin ???

How is the development of JACK FUIT fruit takes place from seed to fruit?

Agro-industrial byproducts Agro-industrial by-products in Southeast Asia are available in plenty, due to the emphasis on crop cultivation. By-products of agro-industries repre

Gluconeogenesis:   When  diet is deficient  incarbohydrates. Glucose  or glycogen is formed from noncarbohydrate compounds principally from certain amino acids  and the glycerol of

Implant surface affect Osseointegration Surface topography is critical as rough surfaces produce better bone fixation as compared with smooth surfaces, and osteoblast like cell

Q. How DNA-RNA hybridization occurs Both DNA and RNA are able to form hybrids in solution with other RNA or DNA molecules which have complementary base pairing. Double-stranded

Explain about the Spectrophotometer? The spectrophotometer, a key instrument today in biomedical laboratories, was invented in 1939 by the American chemist Arnold O. Beckman (1