Wisconsin's Forestland Woody Biomass Harvesting Guidelines

Recommendations

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Guideline 5.B ➠Do not harvest fi ne woody material on soils classifi ed as dysic Histosols. These are wetland soils with at least 16 inches of organic material that are nutrient-poor with a low pH. Areas with dysic Histosols 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/ Background and Implementation Notes Guideline 5.B restricts the harvest of fi ne woody material on dysic Histosols. These are soils that form in acidic wetlands, where organic matter accumulates faster than it decomposes and eventually builds up into a thick layer. Dysic Histosols are of concern for potential nutrient depletion because their only nutrient inputs are from runoff and atmospheric deposition. The upper portions of these organic soils, which are the parts that support vegetative growth, are isolated from mineral soil and do not receive nutrient inputs from mineral weathering. Because of this potential for depletion, harvest of fi ne woody material is restricted. Fine woody material contains a higher amount of nutrients on a weight basis as 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. Figure 3-12. Typical appearance of vegetation growing on a dysic Histosol. Most dysic Histosols are not productive enough to support large volumes of biomass. 34 Andy Clark, WI DNR
Figure 3-13. A dysic Histosol is an organic soil formed in wetlands. The soil is made up of partly decomposed vegetation and is very dark colored and spongy. Eunice Padley, WI DNR 35
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 34 and 35: compared with a tree’s bole and l
Page 36 and 37: Background and Implementation Notes
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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