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Lecture 5

PLAN341 Lecture Notes - Lecture 5: Groundwater Recharge, Hydraulic Head, Soil Texture

4 pages74 viewsWinter 2017

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Mike Stone

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PLAN 341 Lecture 5 (Jan 20)
Soil, Land Use and Waste Disposal
- bottom left picture showing stuff coming from dump which then leads to
- recharge areas for drinking water, site where theres some type of pollution
occurring, and some pollutants goes very quickly where water goes (chloride,
- drinking water contaminated cause of land use practices, recognition of where
drink water areas are and land use on top is important
- contaminant flumes moves from areas of high elevation to low elevation
- groundwater moves naturally from high hydraulic head to low hydraulic head
Landscape Form and Function
- each of these eco regions, have all of these elements in them (dynamics, features,
- groundwater dynamics and interaction with soil
- types of waste that are created are waste from military, industrial (radioactive
materials, toxic organic materials)
Soil Profile
- O is top horizon with grass, b is area with roots, water moves up and down this
system in area B, partial pressure of roots asserts a positive pressure on the water
and can start to move it up
- top of the surface can be so hot and the water can start to move up , and this moves
up based on cohesive forces
Forms of Soil Moisture
- capillary water
- water can be held to soil particles by cohesive forces
- movement of water along a moisture gradient
- water moves in vertical and horizontal directions
- gravity water, moves in response to gravity, groundwater
- cohesive forces which binds the water to the sediment and holds the water to the
sediment and that’s the water used by plants, and then once these materials become
saturated, the water moves down to the groundwater and that’s water that moves
through gravity
Drainage in Soils
- particles that are large, the water moves quickly through these systems
- small particles that are highly charged then the water stays
- the rate at which the water penetrates the soil surface (cm/hr) is infiltration
- permeability rate at which the water moves down through the soil
Soil Textural Triangle
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