isohumic

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English

Etymology

From iso- +‎ humic.

Adjective

isohumic (not comparable)

  1. Having the same, or uniform, percentage of humic acid.
    • 1996, A. Piccolo, Humic Substances in Terrestrial Ecosystems, →ISBN, page 58:
      The zonal distribution of soils developed under continental climates was first reported by Dokuchaev, who established in 1883 a map of isohumic curves, between the boreal and sub-arid zones of European Russia.
    • 2005, Inger Andersen, Katherin George Golitzen, The Niger River Basin: A Vision for Sustainable Management, →ISBN, page 23:
      Even farther north, subarid isohumic brown soils are present from Gourma to Gao (Mali), and in Niger.
    • 2009, R. P. C. Morgan, Soil Erosion and Conservation, →ISBN, page 200:
      The effectiveness of the material varies with the isohumic factor, which is the quantity of humus produced per unit of organic matter (Table 9.1; Kolenbrander 1974).
    • 2012, R. Duchaufour, Pedology: Pedogenesis and classification, →ISBN, page 247:
      Although present-day climates of central Europe are favourable to brunification and not to the formation of isohumic soils, in certain favourable sites in central and western Europe some partially brunified isohumic soils occur that are in fact polycyclic soils of biological origin and are entirely Postglacial, being characterised by two successive phases of humification: (i) an older phase of isohumic development; and (ii) a more recent phase of brunification.
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