Flashcards

Soil

UWI Landau Alemão 13 flashcards

Flashcards do conjunto (13)

1Polar & Subpolarhumus & litter layer high
(decomposition limited by dry, ice, cold)
low pH
(no decomposition)
nutrients are there but not usable
2Boreallitter layer high, low humus
(decomposition slow)
low pH
less nutrients
3Boreal - what types?Podsol
(water washes clay Minerals & humus to lower layers, CEC low)
Histosol
Cambisol
4Tempeate midlatitudesMineral rich
litter easily decomposed
soil flora & fauna active all year
5Dry midlatitudesgood CEC
very fertile
decomposition: 1 year
6Subtropics with winter raindecomposition slow
(sclerophyllous vegetation + drought)
fires important
7Subtropics with year-round rainlow humus
(very fast decomposition)
soil leaching
(strong chemical weathering)
low CEC
8Dry tropics & subtropicssalinization + wind erosion
coarse soil better than clayey
(water reserves below ground)
9Tropics with summer rainlow humus
(decomposition 1 year)
10Tropics with summer rain - dry savanna-young soil
nutrient rich
11Tropics with summer rain - moist savanna-deeply weathered
fast decomposition
nutrient poor
12Tropics with year-round rainnutrient poor
(decomposition 1 year, low humus)
deep soil
low pH
intense chemical weathering
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