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Author(s):
Marcia Patton-Mallory, Richard Nelson, Kenneth E. Skog, Bryan Jenkins, Nathan Parker, Peter Tittman, Quinn Hart, Ed Gray, Anneliese Schmidt, Gayle Gordon
Year Published:

Cataloging Information

Topic(s):
Fuels
Fuel Treatments & Effects
Mechanical treatments

NRFSN number: 11018
FRAMES RCS number: 7662
Record updated:

ANNOTATION: Forest biomass thinnings can potentially impact soil resources by altering soil physical, chemical, and/or biological properties. This paper provides basic recommendations and findings derived from stand-removal studies to guide biomass thinnings for forest health, fuel reduction, or energy production. The focus of these recommendations is to reduce the impact of thinning operations on soil productivity and subsequent stand growth. ABSTRACT: Forest biomass thinnings, to promote forest health or for energy production, can potentially impact the soil resource by altering soil physical, chemical, and/or biological properties. The extent and degree of impacts within a harvest unit or across a watershed will subsequently determine if site or soil productivity is affected. Although the impacts of stand removal on soil properties in the western United States have been documented, much less is known on periodic removals of biomass by thinnings or other partial cutting practices. However, basic recommendations and findings derived from stand-removal studies are also applicable to guide biomass thinnings for forest health, fuel reduction, or energy production. These are summarized as follows: (1) thinning operations are less likely to cause significant soil compaction than a stand-removal harvest, (2) risk-rating systems that evaluate soil susceptibility to compaction or nutrient losses from organic or mineral topsoil removal can help guide management practices, (3) using designated or existing harvesting traffic lanes and leaving some thinning residue in high traffic areas can reduce soil compaction on a stand basis, and (4) coarse-textured low fertility soils have greater risk of nutrient limitations resulting from whole-tree thinning removals than finer textured soils with higher fertility levels.

Citation

Patton-Mallory, Marcia; Nelson, Richard; Skog, Ken; Jenkins, Bryan; Parker, Nathan; Tittman, Peter; Hart, Quinn; Gray, Ed; Schmidt, Anneliese; Gordon, Gayle. 2008. Strategic assessment of biofuels potential for the western U.S. In: Zalesny, Ronald S. Jr.; Mitchell, Rob; Richardson, Jim, eds. Biofuels, bioenergy, and bioproducts from sustainable agricultural and forest crops: proceedings of the short rotation crops international conference; 2008 August 19-20; Bloomington, MN. Proceedings NRS-P-31. Newtown Square, PA: USDA Forest Service, Northern Research Station. p. 42. https://doi.org/10.1093/wjaf/25.1.5