The coarse‐soil fraction is the main living space of fungal hyphae in the BhBs horizon of a Podzol
作者： Nina Koele , Felix Storch , Ernst E. Hildebrand
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摘要: In acidified forest soils, the coarse-soil fraction is a potential nutrient source. Plant uptake from aided by ectomycorrhiza. Similarly, (recalcitrant) organic matter (OM) an important source largely made plant-available through (symbiotic) microorganisms, especially in topsoil. We hypothesized that podzol profile, fungal hyphae would concentrate hotspots, either OM or fraction. Absolute hyphal length, base saturation, and organic-C content of Podzol profile were determined fine-earth fractions. fraction, attracted relative high saturation. BhBs horizon, absolute length exceeded fine earth factor 3, yet C saturation lowest. could not determine to what fungi belonged. Most likely ectomycorrhiza, ericoid mycorrhiza saprotrophic dominate upper soil layers this all utilize for nutrition. deeper mineral horizons ectomycorrhiza are better adapted than other harvest nutrients inorganic sources. Additionally, favorable physical properties may explain amount horizon. Both play more active role microbial cycling previously assumed.
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