Soil Science Society of America Journal · 2002 · 75 citations · 40 references
AgricultureEarth SciencesSoil SciencesSoil ChemistrySoil Organic MatterSoil ScienceOrganic Matter AccumulationSoil AciditySoil Chemical PropertiesSoil CompositionSoil HorizonsSoil PhE HorizonHueHumus CompositionHumus Form ClassificationSoil Biological Properties AssessmentSoil Organic Matter CharacterizationSoil Organic Matter ContentSoil Physicochemical Properties
A quantitative assessment of forest humus forms is suggested, on the basis of a scale ranging from 1 (Eumull) to 7 (Dysmoder) which is called the humus index Regression analyses showed that this index was well‐correlated with several morphological as well as chemical variables describing forest floors and topsoil profiles: thickness of the Oe horizon, depth of the crumby mineral horizon, Munsell hue, pH KCl and pH H2O , H and Al exchangeable acidity, percentage base saturation, cation‐exchange capacity, exchangeable bases, C and N content and available P of the A horizon. The suggested humus index could be used as a cheap and rapid method for the bulk assessment of organic matter accumulation, soil acidity, and soil biological activity.
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The Influence of Island Area on Ecosystem Properties
David A. Wardle, Olle Zackrisson, Greger Hörnberg et al. · Science · 1997 · 646 citations
Life Sciences, Ecology, Fire Ecology +15
Towards a Taxonomic Classification of Humus Forms
R. N. Green, Robert L. Trowbridge, Karel Klinka · Forest Science · 1993 · 438 citations