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U DSPAATMENT OP AGRICULTURE <br />N REFOURCSS CONSERVATION SERVICE <br /> <br />• <br />WOODLAND MANAGEMENT AND PRODUCTIVITY <br />E~ote -- WOODLAND MANAGEMENT AND PRODUCTIVITY <br />PAGE 2 OF 3 <br />OB/1]/98 <br />T report can be used by woodland owns re or forest manage re in planning the use of voile for wood trope. only those <br />es suitable for wood trope are listed. The report lists [he ordination symbol for each soil. Soils see igned the <br />e ordination symbol require the same general management and have about the same potential productivity. <br />T~firs[ part of the ORDINATION EYMHOL, a number, indicates the potential product ivicy of the voile for an indicator <br />t epeciee. The first species listed under common trees for a eo it ie Che indicator species for that soil. I[ le <br />the dominant epeciee on the soil and the one that determines the ordination class. The number indicates [he volume, <br />in cubic meters per hectare per year, which the indicator epeciee can <br />p uce. The second part of the symbol, a letter, indicates Che major kind of soil limitation. The letter •Rn' indicates <br />s p elopes; '%•, stoniness or rockiness; 'W', excess water in or on the soil; 'T•, toxic substances In [he soil; •D•, <br />rear ricted rooting depth; 'C•, clay in the upper par[ of the eo il: 'S•, Bandy Ceture, •F", a high coots nC of rock <br />f mente in Che soil; and •N`, enowpack. The letter •An• indic a[ee that limitations oz reetrictione are <br />S~gnif icant. If a soil hoe more Chan one limitation, the priority Se ae follows: R, %, W, T, D. C, S. F, and N. <br />In this report, 'Slight', 'Moderate', and 'Severe' indicate Che degree of the major soil limicat io ne [o be considered in <br />m~gement. <br />EROSIOx HAZARD is the proDaDility that damage will occur ae a result of site preparation and cutting where Che soil is <br />exposed along roads, skid Craile, fire lane e, and log-handling areas. Woodlands [hat have been burned or <br />grazed are also eubj act to erosion. Ratings of the erosion hazard are based on [he percent of the elope. A <br />ing of •S1 i9hC' indicates that no pa r[icular prevention measures are needed untler ordinary condiCicne. A racing of <br />'Moderate' indic area [hat eroe Lon-control me aeuzee are needed in certain silt' icu It ural actin i[ie e. A rating of <br />vets' indicates that special preca u[iona are needed to control erosion in most oily is ul[ural activities. <br />E~IPMENT LIMITATION ref lec[e Che characteristics and [ondiClone of the Boll [hat restrict use of Che equipme n[ <br />generally needed in woodland management or ha rvea[ing. The chief characteristics and conditions coneide red in the <br />togs are elope, atones on the surface, rock outcrops, soil we [neae, and texture of the surface layer. A rating of <br />~ight' indic area that under normal cand i[ione the kind of equipme n[ or ae aeon of use ie not eigniE icantly reetrictetl <br />by soil factors. Soil wetness tan restrict equipment use, bus the wet period dove not exceed 1 month. A rating of <br />'Moderate` indlca[ee Chat equipment use ie moderately restricted because of one or more soil factors. If the soil <br />r et, the wetness rest titre equipment use Eor a period of 1 to 3 monehe. A rating of "Severe' indicates that <br />ipment use is eeve rely restricted either ae to the kind of equipment that can be used or the season of use. If the <br />soil is wet, the wetneae restricts equipment use for more than 3 months. <br />~DLI NG MORTALITY ref ere to the death of naturally occurring or planted tree see dl inge, as influenced by the <br />de of soil, soil wetness, or topographic conditions. The factors used Sn rating the eo ila Eoz eeetlling mortality are <br />texture of the surface layer, depth [o a eeaeonal high water table and the length of the period when the water table ie <br />h, rock fragments in the surface layer, effective rooting depth, and elope aspect. A rating of 'El lyht' indicates <br />~t eeedl Sng mortality ie not likely [o be a problem under normal conditions. Expected mortality Se le se Chan 25 <br />cent. A rating of •MOderate• indicates that some problems Erom seedling mortality can be expected. Extra <br />precautions are advisable. Expected mortality ie 25 to 5o percent. A rating of 'Severe' indicates [hat see dl Sng <br />~tal ity ie a serious problem. Extra precautions are important. Replanting may be necessary. Expected mortality <br />more than SD percent. <br />WINDTHROW HAZARD ie [he like lihood that trees will be uprooted by the wind beta use the soil ie no[ deep enough for <br />quote root anchorage. The main reetrictione that affect rooting are a eeaeonal high water [able and the depth to <br />rock, a Eragipan, or other llmi[ing la ye re. A rating of •E light' indicates that under normal conditions no trees are <br />1 <br />1 <br /> <br />