Laserfiche WebLink
<br />0a2837 <br /> <br />Maximum Timber - Without Minimum Management Requirements - Benchmark <br />(No FEIS Benchmark Nos.) <br />(FORPLAN Run No.1A) <br /> <br />Purpose: This benchmark determines the Forest I s maximum timber production <br />capability in the first decade, given all tentatively suitable timberland is <br />available for harvest. This benchmark is also unconstrained by minimum <br />management requirements. This will establish the biological potential without <br />impairing land productivity. <br /> <br />FORPLAN Objective function: Maximize timber output in the first decade, rolled <br />over to maximize timber for 15 decades, rolled over to maximize PNV for fifteen <br />decades. <br /> <br />Constraints: <br /> <br />-Timber harvest is scheduled only on lands classified as tentatively <br />suitable for timber production. <br /> <br />-Timber harvest can equal but not exceed the long-term sustained yield ~ <br />capacity (LTSY). ~ <br /> <br />-Timber harvest levels can increase from decade to decade but not decline. <br /> <br />-Sufficient timber inventory must remain at the end of the modeling horizon <br />to sustain timber harvest at the LTSY level. <br /> <br />-Regeneration cuts cannot be scheduled until stands have reached 95~ of <br />culmination of mean annual increment. <br /> <br />-Regeneration harvests are dispersed to meet Regional guidelines for size <br />and separation of harvest units. <br /> <br />Significant features and results: The PNV over the 150-year modeling period is <br />$2.311 billion dollars. There are 1,308,660 acres identified as suitable for <br />timber production, with a long term sustained yield level of 39.1116 MMCF per <br />year. This annual offer level of 37.1146 MMCF (160 MMBF) occurs from the first <br />decade to the end of the 13th decade. <br /> <br />Table C-3 displays the resource output levels and budget requirements of this <br />benchmark. <br /> <br />30 <br />