Exam 3 part soils Flashcards
pedosphere
outermost layer of earth
interface of: biosphere, lithosphere, atmosphere, hydrosphere
soil
mixture of fragmented and weathered grains of minerals and rocks, with air and water, and layering. all influenced by climate and living organisms.
controls of soil formation
climate relief organisms parent material time
soil components
minerals 45%
water 40%
air 30%
organic matter 5%
soil profiles
O,A,E,B,C,R
Soil importance
regulates/stores water cycles nutirnets filters pollutants stores gases supports ag sustains plant life
physical properties of soil
texture
structure
color
pedon
naturally occurring clumped column representing the soil profile.
texture
triangle thing
structure
prismatic
platy
blocky
granular
color
munsell color chart
soil classifications determined by
soil properties, observable and measurable
orders and suborders
orders
development weathering composition
suborders
climate, moisture, parent material
catena
regional sequence of soil profiles appearing in regular succession downslopes