Publication Date:
2017-07-04
Description:
Land use change (deforestation) has several negative consequences for the soil system. It is known to increase erosion rates, which affect the distribution of elements in soils. In this context, the crucial nutrient Si has received little attention, especially in a tropical context. Therefore, we studied the effect of land conversion and erosion intensity on the biogenic silica pools in a subtropical soil in the south of Brazil. Biogenic silica (BSi) was determined using a novel alkaline continuous extraction where Si ∕ Al ratios of the fractions extracted are used to distinguish BSi and other soluble fractions: Si ∕ Al 〉 5 for the biogenic AlkExSi (alkaline-extractable Si) and Si ∕ Al
Print ISSN:
1869-9510
Electronic ISSN:
1869-9529
Topics:
Geosciences
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