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Summary
DescriptionNutrient cycle.svg
English: A diagram of the simplified nutrient cycle.
The three main compartments for nutrient store:
Biomass (flora and fauna) (green)
Litter (purple)
Soil (brown)
The two inputs (light green):
Nutrients dissolved in raindrops
Nutrients from weathered rock
The two outputs (red):
Nutrients lost through surface runoff
Nutrients lost through leaching
The three flows between the compartments (blue):
Littering (including withering, defoliation, excretion, unconsumed parts left over, dead bodies of animals, and so on). (This does not include people who don't care about the environment throwing litter on the ground, even if the litter contains nutrients, because those people are not regarded as part of the biomass.)
Decomposition of the litter into inorganic nutrients, which are then stored in the soil
Nutrient uptake by plants
This diagram only shows the typical nutrient cycle of a terrestrial ecosystem. The size and thickness of the compartments and flows are not proportional to their actual size since the proportions vary from biome to biome, and from ecosystem to ecosystem.
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