Wisconsin's Forestland Woody Biomass Harvesting Guidelines

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compared with a tree’s bole and large branches. Retaining fi ne woody material keeps a portion of tree nutrients on site and helps maintain productivity. Appendix D gives a list of soil map units that are shallow to bedrock. Depth to bedrock is measured vertically (perpendicular to the land’s surface). Measurement begins at the top of a layer of decomposed material or mineral soil, but does not include fresh, undecomposed leaf litter or twigs lying on the forest fl oor. Figure 3-7. Parts of southwestern Wisconsin have thick layers of limestone or dolomite bedrock near the surface. Bedrock is considered solid material, so the depth to bedrock includes particles that may be fl aking or crumbling from the rock's surface (Figure 3-6). Depth to bedrock is often variable, so a number of observations are taken (for example, with auger borings or shovel holes) and the typical or most common depth is chosen to represent the site. Figure 3-8 . Sites with bedrock outcroppings at the surface are considered shallow to bedrock. Sites with surface rocks and boulders may or may not have shallow bedrock. 30 Eunice Padley, WI DNR Andy Clark, WI DNR
Guideline 4.B ➠Do not harvest fi ne woody material on dry nutrient-poor sandy soils. Dry nutrient-poor sandy soils are components of soil map units that meet certain criteria, such as low clay content. See Appendix D for a complete list of criteria. Areas with dry nutrient-poor sandy soils are identifi ed by using soil survey maps produced by the Natural Resources Conservation Service (NRCS). A list of soil map units appears in Appendix D. See the Web Soil Survey for soil maps: http://websoilsurvey.nrcs.usda.gov/app/ Figure 3-9. Soils on dry nutrient-poor sandy sites are almost entirely made up of clean quartz sand grains. ✔ Exception: Jack pine stands may be harvested for woody biomass at rotations of 40 years or longer. Figure 3-10. Dry nutrient-poor sandy sites typically occur on relatively fl at outwash sand plains where there are few nutrients in the soil. The area in this photo, on the Brule River State Forest, was struck by a severe hailstorm in August, 2000. At the time the photo was taken, it had been site-prepped for replanting 31 Carmen Wagner, WI DNR Dave Schulz, WI DNR
Page 2 and 3: Authors: Sarah Herrick, Joe Kovach,
Page 4 and 5: These guidelines are the result of
Page 6 and 7: Preface Wisconsin’s Forestland Wo
Page 8 and 9: Traditional timber harvests have ge
Page 10 and 11: Figure 1-4. Fine woody material is
Page 12 and 13: Fisher Eunice Padley, WI DNR R. A.
Page 14 and 15: • Communities demonstrating excep
Page 16 and 17: Figure 2-1. Pre-existing coarse woo
Page 18 and 19: In some instances, it may be necess
Page 20 and 21: Figure 2-5. Woody material left on
Page 22 and 23: Guideline 3.A ➠Do not remove the
Page 24 and 25: Reminder: For tree and snag retenti
Page 26 and 27: Chapter 3 Background and Implementa
Page 28 and 29: Follow management strategies to pro
Page 30 and 31: Example of a Forested Seep. Informa
Page 32 and 33: Figure 3-5. Where a sanitation harv
Page 36 and 37: Background and Implementation Notes
Page 38 and 39: Guideline 5.B ➠Do not harvest fi
Page 40 and 41: Chapter 4 Application and Modifi ca
Page 42 and 43: Figure 4-4. When using prescribed f
Page 44 and 45: Handbooks and Other Guidance Silvic
Page 46 and 47: Soils and Mapping Web Soil Survey -
Page 48 and 49: Federally listed Species: Species f
Page 50 and 51: Relict Forest: Forests which appear
Page 52 and 53: Wildlife: All non-domesticated anim
Page 54 and 55: Soils Sub-committee Jim Bockheim ..

Wisconsin's Forestland Woody Biomass Harvesting Guidelines

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