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U. S^ DEPARTMENT OF AGRICULTURE <br />NATURAL RESOURCES CONSERVATION SERVICE <br />WOODLAND MANAGEMENT AND PROOUCTIVITY <br />Endnote -- WOODLAND MANAGEMENT AND PRODUCTIVITY <br />PAGE 2 OF 3 <br />08/17/00 <br />This report can be used by woodland owners or forest managers in planning the use of soils for Wood crops. Only [hose <br />soils suitable for wood crops are listed. The report lists Che ordination symbol for each soil. Soils assigned [he <br />same ordination symbol require the same general management and have about the same potential productivity. <br />The fire[ part of Che ORDINATION SYMBOL, a number, indicates the potential productivity of [he soils for an intlfcator <br />tree species. The first species listed under common trees for a soil is the inaicacor species for that soil. IC ie <br />[he dominant Hpecies on the soil and the One that determines the ordination class. The number indicates the volume, <br />in cubic meters per hectare per year, which the indicator species can <br />produce. The secontl part of [he symbol, a letter, indicates the major kind of soil limitation. The letter "Rn" indicates <br />Htaep 91 Ope9; "X°. 9[6n1ne99 OY rOC k1 nC99; °W", excess WdCFr in 6r On Cne 8oi1; "T", CO%1C 8LLb8 CanCe9 In ChE 9011; "D^, <br />restricted rooting depth; ^C°, clay in the upper part of Che soil; "S°, sandy [acute; "F^, a high con Cent of rock <br />fragments in the soil; and "N", snowpack. The letter "An" indicates chat limitations or restrictions are <br />insignificant. if a soil has more than one limitation, the priority is as follows: R, X, w, T, O, c, s, e, and N. <br />In this report, °Slight", "MOdeza to", and "Severe" indicate the degree of the major soil limi Cations to be considered in <br />management. <br />EROSION HAZARD is the probability [hat damage will occur as a result Of site preparation and cutting where i..: soil is <br />exposed along roads, skid trails, fire lanes, and log-handling areas. woodlands that have been burned or <br />overgrazetl are also sublecc co erosion. Ra cings of the erosion hazard are based on the percent of the slope. A <br />Ya of "Slight" indicates [ha[ no particular prevention measures are nestled under ordinary Conditions. A rating of <br />"MOaera te" indicates that erosion-control measures are needed in certain silvicultural activities. A rating of <br />"Severe^ indicates that epeci al precautions are needed to control erosion in most ail vicultural activities. <br />EQUIPMENT LIMITATION reflects the ChdraCteLi9C 1C9 and COrtdlClen9 Of Che soil that Le9CY1Ct uSe Of the equipment <br />generally nestled in woodland management or ha rveati ng. The Chief CharacCeriati cs and conditions considered in the <br />ratings are slope, atones on the surface, rock outcrops, soil wetness, and texture of Che surface layer. A rating of <br />"Slight" indicates chat under normal conditions [he ki ntl of equipment or season of use is not significantly restricted <br />by soil factors. Soil wetness can restrict equipment use, but [he wet period does not exceed 1 month. A racing of <br />"MOderdte" rntlicac es Chdt equipment use i9 mode ld Cely Le9CY1C[ed because of one or more soil factors. If Che 9011 <br />ie wet. the wetness resCZic[s equipment use for a period of 1 to 3 moo [hs. A rating of "Severe" indicates that <br />equipment use ie severely restricted either as to the kind of equipment that can be used or the season of use. If the <br />soil is wet, the wetness restricts equipment use for more Chan 1 months. <br />SEEDLING MORTALITY refeYe [o [he death of naturally occurring or planted tree seedlings, as influenced by the <br />kinds of soil, soil wetness, or topographic conditions. The factors used in rating the soils for seedling mortality are <br />texture of the surface layer, depth to a seasonal high water table and the length of the period when the water Cable is <br />high, rack fragments in the surface layer, effective rooting depth, and elope aspect. A rating of "Sl iyht" indicates <br />that seedling mortal icy is no[ likely co be a problem under normal conditions. Expected mortality is less than 25 <br />percent. A rating of •MOderate^ indicates that some problems from seedling mortality can be expected. Extra <br />precautions are advisable. Expected mortality is 25 to 50 percent. A racing of ^Severe" indicates that seed! ing <br />mortality is a serious problem. Extra precautions are important. Replanting may be necessary. Expected mortality <br />ie more Chan 50 percent. <br />WINDTHROW HAZARD is Che likelihood that trees will be uprooted by the wind beta use Che soil is not deep enough for <br />ado to root anchorage. The main restrictions that affect rooting are a seasonal high water [able and the tlep[h to <br />bet .x, a frog ipso, or ocher limiting layers. A rating of "Slight" indicates that under normal conditions no trees are <br />