Monday, October 1, 2012

Porosity Permeability and Water Retention

Porosity and Permeability (hereafter Po and Pm respectively) are directly related. During the lab when the Pm for the gravel was 4.2 cm/second, the Po was 58%. When the Pm for the sand was .05 cm/second, the Po was 28%. When the Pm for the clay was 5.9 x10 to the -3 cm/second, the Po was 10%. Given this data, it is safe to conclude that Po and Pm are directly related, that is to say, when one goes down the other goes down as well, and when one goes up the other goes up as well. This is relevant to daily living because if soil has high Po and Pm, (like the gravel) it doesn't hold water, thus meaning that plant life isnt likely to thrive in that place, but if there is a medium Po and Pm, often like the kind found in loam, plant life is likely to be sustained.

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