Soil orders Flashcards
(29 cards)
No B horizon
generally young
cool and dry
Regosolic
Bm, Bfj, Btj > 5cm or Bf<10cm
forests, dry, teenage
Brunisolic
Bt, blocky, clay coating
ah,ae,bt,c
Luvisolic
Bg lowlands, mottles wet and grey (anoxic) Riparian veg, <17%C Organic wetland
Gleysolic
Of, Om, Oh that exgend >40cm
well drained
Organic order
Ah>10cm C/N<17 High BS>80% Ca2+ dominate cation low leaching grassland
Chernozemic
Bn, Bnt Na accumulation subhumid/subarid grassland columnar
Solonetzic
Bf
orange
UBC
Podzolic
B,Cz/y or Oz
Permafrost
cyroturbated
freeze/thaw (mixing)
Cryosolic
Bss/Css and Bv/Cv
argillipedoturbation
shrink/swell
distinct dry season
Vertisolic
e
elluviated
down from a to b horz
b
buried
c
cementation
f
Fe/Al oxides
g
gleyed
water saturation
high water table
mottles
h
hummus (OM) accumulation
j
juvinile
k
calcium carbonate as primary
m
modified
n
presence of sodium influencing horizon development
ss
agrillipedoturbation
t
clay presence
v
mixing due to shrink swell
clay to heavy clay
x
fragipan, loamy surface and low OM