Effective Stress at Ground Water Table = Total Stress minus the Pore water stress, but the pore water stress is negative, therefore = Total Stress plus the water pressure in capillary zone.
-kelvinbrbTSU
Texture, for one. Coarser soils (sandy) have much less capillary action than finer soils (clayey).
I. N. Felitsiant has written: 'Regularity of capillary movement of water and salt solutions in stratified soils'
the soils goes moister due to fertiling of the internal eggs in the soils roots
It can. This is best illustrated by the hydrangea's flowers which are pink in alkaline soils and blue in acid soils.
Slope movements are commonly preceded by a decrease in effective stress because there is a direct correlation between effective stress and the strength of a frictional material like soil, whereby as the effective stress decreases, the normal stress on any potential shear surface within the material also decreases. This in turn leads to a reduction in the shear strength of said surface. If this reduces to such an extent that the shear stress on the surface exceeds the frictional shear strength, movement can occur. Further to this, slopes composed of fine grained clay soils will undergo shrink and swell cycles as effective stress changes occur which can lead to strain softening behaviour and progressive failure. For more information see the related link. In particular review the equation in section 3.4 where frictional strength on a theoretical slip surface is shown to be dependent on the total normal stress (sigma n) acting on the surface minus the pore water pressure (u) or in other words the strength is directly proportional to the normal effective stress).
John F. Kennedy
pouring fudge on yourself
Many plants doesn't support salted waters or soils.
Some plants doesn't support salted soils and waters.
Soils with high levels of organic matter, clay content, or iron oxides are effective in purifying polluted water. These soils have the ability to adsorb pollutants and contaminants, improving water quality. Sand or gravel soils are less effective in this regard.
Tensiometers are most suitable for monitoring moisture levels in soils that have fine texture, such as silty or loamy soils, where water movement is slower. They are less effective in coarse soils like sandy soils due to higher infiltration rates and poor contact between the sensor and soil.
The pH of a substance thrown in the environment can lead to a degradation of soils and waters.