Duff layer definition

Duff layer means the matted, friable, partly decomposed, organic surface layer of forested soils. This term is used to identify a generally firm organic layer on the surface of mineral soils. It consists of fallen plant material that is in the process of decomposition and includes everything from the litter on the surface to underlying pure humus.
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Examples of Duff layer in a sentence

  • Duff layer development after 50+ years without fire.PRESCRIBED FIRE Fire UseFire is an ecological imperative in pine rocklands and flatwoods.

  • Duff layer depth will gradually increase as well, increasing the potential for a low-intensity, smoldering fire to kill even the largest trees through girdling (damaging the plants vascular system around the trunk’s periphery at the ground level).Forestry and Vegetation Under Alternative A (No Action), the BLM and its partners would continue to implement the Headwaters forest restoration program as described in the 2004 Headwaters RMP.

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