soils Flashcards
what do soils include
-agriculture
-building
-storing hsrmful greenhouse gas emissions
whata re the compostions of soil
-minerals
-water
-air
-organic matter
-plant litter
how was soil formned
-topography
-parent material
-organisms
-time
-human activity
what are the 3 hirizons of soil
-A horizon-topsoil
-B horizon-subsoil
-C horizon-bedrock
whata re the two impacts of soil formation
-leaching
-humification/breakdown of plant litter
what is leaching
leaching is when there is heavy rainfall and it washes away all the nutrients and minerals in thr top soil-creates hardpan
what is hardpan
when theres a thing crusty layer at the bottom of the topsoil
explain plant litter
dead leaves and twigs that land on the topsoil and i sbroken down by bugs and earthworms (oxygen is also needed) and turned into humus. this process is called humification
what are the different soil types
-brown soil
-podzol soil
-gley soil
-peaty soil