Maintaining soil productivity during forest or biomass-to-energy thinning harvests in the Western United States.

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.

[1]  H. G. Miller.  Forest Fertilization: Some Guiding Concepts , 1981 .

[2]  A. Munson,et al.  Impact of precommercial thinning in balsam fir stands on soil nitrogen dynamics, microbial biomass, decomposition, and foliar nutrition , 2000 .

[3]  Leslie A. Viereck,et al.  Productivity and nutrient cycling in taiga forest ecosystems , 1983 .

[4]  T. Shaw,et al.  Foliar nutrient and tree growth response of mixed-conifer stands to three fertilization treatments in northeast Oregon and north central Washington , 2000 .

[5]  Gene E. Likens,et al.  Pattern and Process in a Forested Ecosystem , 1980 .

[6]  Ronald L. Heninger,et al.  Managing for sustainable site productivity: Weyerhaeuser's forestry perspective , 1997 .

[7]  R. Driessche,et al.  Short-term effects of soil compaction on growth of Pinuscontorta seedlings , 1996 .

[8]  P. W. Farrell,et al.  Maintenance of Productivity of Radiata Pine Monocultures on Sandy Soils in Southeast Australia , 1986 .

[9]  D. Andrew Scott,et al.  Negligible effects of severe organic matter removal and soil compaction on loblolly pine growth over 10 years , 2006 .

[10]  S. Hagerman,et al.  Effects of clear-cut logging on the diversity and persistence of ectomycorrhizae at a subalpine forest , 1999 .

[11]  G. Weetman,et al.  Black spruce: 15-year growth and microbiological responses to thinning and fertilization , 1980 .

[12]  Lars Eliasson,et al.  Effects of slash reinforcement of strip roads on rutting and soil compaction on a moist fine-grained soil , 2007 .

[13]  A. Harvey,et al.  From: Environmental Consequences Of Timber Harvesting In Rocky Mountain Coniferous Forests , 1980 .

[14]  H. Lee Allen,et al.  Water quality impacts of forest fertilization with nitrogen and phosphorus , 1999 .

[15]  P. Smethurst,et al.  Effects of slash and litter management on fluxes of nitrogen and tree growth in a young Pinusradiata plantation , 1990 .

[16]  Deborah S. Page-Dumroese,et al.  The North American long-term soil productivity experiment: Findings from the first decade of research , 2005 .

[17]  Michelle M. Brown,et al.  The Effects of Microsite (Logs versus Ground Surface) on the Presence of Forest Floor Biota in a Second-growth Hardwood Forest 1 , 2002 .

[18]  J. R. Williamson,et al.  The influence of forest site on rate and extent of soil compaction and profile disturbance of skid trails during ground-based harvesting , 2000 .

[19]  D. Mcaleese,et al.  Mobilisation of nutrients in a Sitka spruce (Picea sitchensis (Bong.) Carr.) forest floor. I. Influence of lime and fertilizers , 1980 .

[20]  Michael J. Gundale,et al.  Restoration treatments in a Montana ponderosa pine forest : Effects on soil physical, chemical and biological properties , 2005 .

[21]  C. Bulmer,et al.  Soil compaction and water content as factors affecting the growth of lodgepole pine seedlings on sandy clay loam soil , 2005 .

[22]  J. Yarie,et al.  Interaction of Temperature, Moisture, and Soil Chemistry in Controlling Nutrient Cycling and Ecosystem Development in the Taiga of Alaska , 1986 .

[23]  Bryce J. Stokes,et al.  A strategic assessment of forest biomass and fuel reduction treatments in western states , 2003 .

[24]  D. F. Grigal,et al.  Effects of extensive forest management on soil productivity , 2000 .

[25]  M. Starr,et al.  Decomposition and nutrient release from logging residues after clear-cutting of mixed boreal forest , 2004, Plant and Soil.

[26]  D. F. Grigal,et al.  Influence of soil organic matter on forest productivity , 2000 .

[27]  Jeffrey E. Herrick,et al.  Soil quality: an indicator of sustainable land management? , 2000 .

[28]  H. Margolis,et al.  Ectomycorrhizal mediation of competition between coniferous tree species. , 1989, The New phytologist.

[29]  C. Sherrod,et al.  Water stress in longleaf pine induced by litter removal , 1979 .

[30]  L. Brussaard,et al.  Effects of compaction on soil biota and soil biological processes. , 1994 .

[31]  J. Cortina.  Long-term field trials to assess environmental impacts of harvesting , 1992 .

[32]  Henry A. Froehlich,et al.  Soil Bulk Density Recovery on Compacted Skid Trails in Central Idaho , 1985 .

[33]  S. Stephens,et al.  Mechanized fuel treatment effects on soil compaction in Sierra Nevada mixed-conifer stands , 2008 .

[34]  Richard E. Miller,et al.  Keeping your forest soils healthy and productive. , 2008 .

[35]  C. Prescott,et al.  The Nutritional Significance of Coarse Woody Debris in Three Rocky Mountain Coniferous Forests 1 , 2002 .

[36]  W. H. Blackburn,et al.  Stormflow and sediment loss from intensively managed forest watersheds in East Texas. , 1990 .

[37]  David A. Perry,et al.  Maintaining the long-term productivity of Pacific Northwest forest ecosystems , 1991 .

[38]  J. Burke,et al.  The impacts of forest harvest and wildfire on soils and hydrology in temperate forests: A baseline to develop hypotheses for the Boreal Plain , 2003 .

[39]  W. A. Adams.  THE EFFECT OF ORGANIC MATTER ON THE BULK AND TRUE DENSITIES OF SOME UNCULTIVATED PODZOLIC SOILS , 1973 .

[40]  D. Page-Dumroese,et al.  The North American Long-Term Soil Productivity Experiment: Coast-to-coast findings from the first decade , 2004 .

[41]  M. Cresser.  Carbon forms and functions in forest soils , 1996 .

[42]  T. DeLuca,et al.  Effects of selection harvest and prescribed fire on the soil nitrogen status of ponderosa pine forests , 2000 .

[43]  H. Brix.  Effects of thinning and nitrogen fertilization on growth of Douglas-fir: relative contribution of foliage quantity and efficiency , 1983 .

[44]  W. Horwath,et al.  Soil compaction effects on growth of young ponderosa pine following litter removal in California's Sierra Nevada , 2002 .

[45]  C. Bulmer,et al.  Soil properties and lodgepole pine growth on rehabilitated landings in northeastern British Columbia , 2003 .

[46]  B. Strahm,et al.  Long-term effects of nitrogen fertilization on the productivity of subsequent stands of Douglas-fir in the Pacific Northwest. , 2009 .

[47]  Hal O. Liechty,et al.  The growth and yield responses of a high site quality red pine plantation to seven thinning treatments and two thinning intervals , 1986 .

[48]  M. Singer,et al.  Effects of Soil Properties, Water Content, and Compactive Effort on the Compaction of Selected California Forest and Range Soils , 1981 .

[49]  R. M. Block,et al.  Quantifying Harvesting Impacts using Soil Compaction and Disturbance Regimes at a Landscape Scale , 2002 .

[50]  Sang-Kyun Han,et al.  Effects of Slash, Machine Passes, and Soil Moisture on Penetration Resistance in a Cut-to-length Harvesting , 2006 .

[51]  S. Stephens,et al.  Thinning, burning, and thin-burn fuel treatment effects on soil properties in a Sierra Nevada mixed-conifer forest , 2007 .

[52]  K. Wilpert,et al.  Ecological effects of soil compaction and initial recovery dynamics: a preliminary study , 2006, European Journal of Forest Research.

[53]  Timothy J. Fahey,et al.  Decomposition and Nutrient Release from Logging Residue Following Conventional Harvest of Sitka Spruce in North Wales , 1991 .

[54]  Richard E. Miller,et al.  Soil disturbance and 10-year growth response of coast Douglas-fir on nontilled and tilled skid trails in the Oregon Cascades , 2002 .

[55]  Constance A. Harrington,et al.  Productivity of Western Forests: A Forest Products Focus , 2005 .

[56]  L. Kellogg,et al.  Environmental Effects and Economics of Mechanized Logging for Fuel Reduction in Northeastern Oregon Mixed-Conifer Stands , 2003 .

[57]  David A. Laird,et al.  The Charcoal Vision : A Win – Win – Win Scenario for Simultaneously Producing Bioenergy , Permanently Sequestering Carbon , while Improving Soil and Water Quality , 2008 .

[58]  G. Henderson.  Soil Organic Matter: A Link Between Forest Management and Productivity , 1995 .

[59]  Robert A. Monserud,et al.  A synthesis of biomass utilization for bioenergy production in the western United States. , 2008 .

[60]  T. Sinclair.  Mineral Nutrition and Plant Growth Response to Climate Change , 1992 .

[61]  J. Buckhouse,et al.  Winter Logging and Erosion in a Ponderosa Pine Forest in , 1993 .

[62]  S. Hart,et al.  Influences of thinning, prescribed burning, and wildfire on soil processes and properties in southwestern ponderosa pine forests: A retrospective study , 2006 .

[63]  C. W. Martin,et al.  Biomass and nutrient removals from commercial thinning and whole-tree clearcutting of central hardwoods , 1987 .

[64]  D. Morris.  The role of long-term site productivity in maintaining healthy ecosystems: A prerequisite of ecosystem management , 1997 .

[65]  D. Page-Dumroese,et al.  Soil carbon and nitrogen pools in mid- to late-successional forest stands of the northwestern United States: potential impact of fire , 2006 .

[66]  P. Mcdonald,et al.  Mulches aid in regenerating California and Oregon forests: past, present, and future. , 1990 .

[67]  Roger D. Fight,et al.  Evaluation of silvicultural treatments and biomass use for reducing fire hazard in western states , 2006 .

[68]  Sang-kyun Han,et al.  Soil compaction associated with cut-to-length and whole-tree harvesting of a coniferous forest , 2009 .

[69]  A. Ares,et al.  Ground-Based Forest Harvesting Effects on Soil Physical Properties and Douglas-Fir Growth , 2005 .

[70]  R. Sands,et al.  Compaction of forest soils. A review , 1980 .

[71]  B. D. Soane,et al.  The role of organic matter in soil compactibility: a review of some practical aspects. , 1990 .

[72]  W. Covington.  Changes in Forest Floor Organic Matter and Nutrient Content Following Clear Cutting in Northern Hardwoods , 1981 .

[73]  M. Bock,et al.  Forest harvesting impacts on soil properties and vegetation communities in the Northwest Territories , 2002 .

[74]  D. Moehring,et al.  Detrimental effects of wet weather logging. , 1970 .

[75]  M. Larsen,et al.  Clearcut harvesting and ectomycorrhizae: survival of activity on residual roots and influence on a bordering forest stand in western Montana , 1980 .

[76]  Henry A. Froehlich.  Soil compaction from low ground-pressure, torsion-suspension logging vehicles on three forest soils , 1978 .

[77]  G. Will,et al.  REMOVAL OF LOGGING WASTE, THINNING DEBRIS, AND LITTER FROM A PINUS RADIATA PUMICE SOIL SITE , 1981 .

[78]  D. Binkley,et al.  Long-term responses of stem growth and leaf area to thinning and fertilization in a Douglas-fir plantation , 1984 .

[79]  K. Karlsson.  Impact of the thinning regime on the mean diameter of the largest stems by diameter at breast height in even-aged Picea abies stands , 2006 .

[80]  Deborah S. Page-Dumroese,et al.  Impacts of Timber Harvesting on Soil Organic Matter, Nitrogen, Productivity, and Health of Inland Northwest Forests , 1997, Forest Science.