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U. DEPARTMENT OP AGRICULTURE <br />NA REEOVRCEE CONSERVATION SERVICE <br />., <br /> <br />WOODLAND MANAGEMENT AND PRODUCTIVITY <br />Er'ote -- WOODLAND MANAGEMENT AND PRODUCTIVITY--Continued <br />• PAGE ] OP l <br />08/1'1/99 <br />b~ down by the wind. Ecrong winds may damage trees, but they do not uproot them. A rating of 'Moderate' indicaCee <br />t some Creee can be blown down during per icde when the Boil is wet and winds are moderate or strong. A rating of <br />e ere' indicates that many creee can be blown down during these periods. <br />P~ COMPETITION ratinge indicate the degree [o which undeeirab le epecles are expected to invade and grow when <br />o Inge are made in the tree canopy. The main factors that affect plant competition are [he tlepth [o [he water table <br />and the available water capacity. A rating of 'Slight' indicates that compeCit ion from undeeirab le pla me ie not <br />1' ly to prevent natural regeneration or suppress the more desirable species. Planted seedlings can become established <br />w out undue competition. A rating of 'Moderate' indicaCee that conipet lion may tlelay Che establishment of desirable <br />a iee. Competition may tamper stand development, but St will not prevent Che eventual development of Eu11y etoc ked <br />etande. A rating of 'fevers' indicaCee than competition can be expected to prevent regeneration unle ae precautionary <br />m. urea are applied. <br />Tf~pocential productivity of merchantable oY COPmtON TREES on a eo it ie expressed ae a site index and ae a volume <br />number. <br />T1'SITE INDE% ie the average height, in feet, that dominant and codomina nt Creee of a given species attaln in a <br />epeci Eied number of years. The Bite index applies [o fully stocked, even-aged, unmanaged etande. Consnonly grown Creee <br />are those that woodlantl manage ra generally favor in intermediate or improvement cuttings. They are ee lected on <br />tf~bae ie of growth rate, quality, value, and marks tab ili[y. <br />the vOLVME OF WOOD FIBER, a number, is the yield likely [o be produced by the moat important trees. This number is <br />eased ae cubic me [e ra per hectare per year, indicaCee [he amount of wood fiber produced in a fully stocked, even- <br />] stand. CuD is meters per hectare converts Co cubic feet per acre per year ae follows: (1 m]/ha = li.] ft3/ac). TRe <br />1 number Se rounded up from 19.2999. <br />Tf~TREES COMMONLY MANAGED FOR to plant are [hose that are eu itable Eor comma zc Sal wood production. <br /> <br /> <br />1 <br /> <br /> <br />1 <br /> <br /> <br />