40.2 SOILFOROWN0100108 E020.810010
Whatis soil
Mixofgeologicrockandorganiclivingcomponents Mpimgtnm
g mahbhm
tgTsm
sandsiltclay
Humsmainorganicpartofsoilbrokendownbiomasslikeleavesdeadanimalswasteetc
mmoniumphosphatesnitrates
Livingorganisms
mhM Ñ tm
Plantsanchorsrootsofplantsandprovideswatershelternutrients N P KMgforgrowth
waterfiltersrainwater runoffbytrappingpollutants inporespaces plantroots igg Ycr
f
Cleanwaterentersgroundwater aquifers
eventrecyclinghometodecomposersthatbreakdowndeadorganicmatter returnnutrientsto thesoil
organismslikeearthwormsfungibacteriamolesslugs
jf
piggieshe for
weathering Breakdown ofrocksintosmallerpieces
Physical windrainfreezingthawingofice
Biological rootsoftreescrackrocks
Chemical acidrainacidfrommosslichen
weatheringofrocks soilformation
MMµfgMMd
Brokenintosmaller smallerpieces
carriedaway depositedbyerosion
Erosion transport ofweatheredrockfragmentsbywind rain
Carriedto newlocation deposited deposition
oil Formation 2methods
FromBELOW
weathering of parentmaterialproducessmaller smallerfragmentsthatmakeupgeologicinorganicpart ofsoil
sandsiltclay
minerals
FromABOVE
Breakdownoforganicmatteradds bus tosoil
fromotherareasaddingtosoil
feet institinghattises
parentmaterial soilpitnutrientcontent
Topography steepslope toomuch erosionmorelevelground deposition
Climatewarmerfasterbreakdownoforgmattermoreprecip moreweatheringerosion deposition
soilorganismslikebacteriafungiwormsbreakdownorganicmatter
so gypsy
Eorizonlayeroforgmatterplantrootsdeadleavesanimalwasteetc ontopofsoil
providesnutrients limits 20
losstoevaporation
Attorizonakatopsoillayerofhumus decomposedmatter mineralsfromparentmaterial
Hasmostbiologicalactivityearthwormssoilmicrobesbreakingdownorganicmattertoreleasenutrients
Baizonakasubsoillighterlayerbelowtopsoilmostlymadeofmineralswlittletonoorganicmatter
containssomenutrients
Whatis soil
Mixofgeologicrockandorganiclivingcomponents Mpimgtnm
g mahbhm
tgTsm
sandsiltclay
Humsmainorganicpartofsoilbrokendownbiomasslikeleavesdeadanimalswasteetc
mmoniumphosphatesnitrates
Livingorganisms
mhM Ñ tm
Plantsanchorsrootsofplantsandprovideswatershelternutrients N P KMgforgrowth
waterfiltersrainwater runoffbytrappingpollutants inporespaces plantroots igg Ycr
f
Cleanwaterentersgroundwater aquifers
eventrecyclinghometodecomposersthatbreakdowndeadorganicmatter returnnutrientsto thesoil
organismslikeearthwormsfungibacteriamolesslugs
jf
piggieshe for
weathering Breakdown ofrocksintosmallerpieces
Physical windrainfreezingthawingofice
Biological rootsoftreescrackrocks
Chemical acidrainacidfrommosslichen
weatheringofrocks soilformation
MMµfgMMd
Brokenintosmaller smallerpieces
carriedaway depositedbyerosion
Erosion transport ofweatheredrockfragmentsbywind rain
Carriedto newlocation deposited deposition
oil Formation 2methods
FromBELOW
weathering of parentmaterialproducessmaller smallerfragmentsthatmakeupgeologicinorganicpart ofsoil
sandsiltclay
minerals
FromABOVE
Breakdownoforganicmatteradds bus tosoil
fromotherareasaddingtosoil
feet institinghattises
parentmaterial soilpitnutrientcontent
Topography steepslope toomuch erosionmorelevelground deposition
Climatewarmerfasterbreakdownoforgmattermoreprecip moreweatheringerosion deposition
soilorganismslikebacteriafungiwormsbreakdownorganicmatter
so gypsy
Eorizonlayeroforgmatterplantrootsdeadleavesanimalwasteetc ontopofsoil
providesnutrients limits 20
losstoevaporation
Attorizonakatopsoillayerofhumus decomposedmatter mineralsfromparentmaterial
Hasmostbiologicalactivityearthwormssoilmicrobesbreakingdownorganicmattertoreleasenutrients
Baizonakasubsoillighterlayerbelowtopsoilmostlymadeofmineralswlittletonoorganicmatter
containssomenutrients
