Agriculture Reference
In-Depth Information
Amazonian forest. P, Ca and Mg may also be significantly concentrated in plant biomass.
In the Banco forest (Côte d'Ivoire) effectively all of the Ca is found in biomass and
litter, and virtually none remains in the highly-weathered soil. Stocks of N in plants and
litter expressed as a proportion of that in the soil are much lower than for other elements.
Temperate forests have larger soil nutrient reserves than tropical forests. In the tropics,
forests tend to accumulate much larger proportions of nutrients in biomass and litter
when they grow on nutrient-poor oxisols than on richer soils. In the former soils,
nutrient losses from litter systems are extremely limited because of the conservation
mechanisms that ensure synchrony between nutrient release and their uptake by plants.
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