Laserfiche WebLink
Woody Plant Density <br />Figure C -3 and C -4 graphically present the "Background" and "Concentration Area" woody plant density <br />averages for the 2012 BRB PSCM -2, respectively. As can be seen, the mean 773 stems per acre <br />observed in the Background area far exceeds 90 percent of the 200 stems per acre performance <br />standard. The mean of 2068 stems per acre observed in the Concentration area also far exceeds 90 <br />percent of the 2000 stems per acre performance standard. The total Concentration Area identified was <br />44.8 acres, or 10.6% of the BRB PSCM -2 (422.6 acres). Hence the standard that there would be at least <br />5% of the Phase Ill BRB PSCM -2 block with at least 2000 stems per acre has been met for 2012. <br />"Background" Density <br />Use of a reverse -null t -test of the assertion that the 2012 BRB PSCM -2 Background woody plant density <br />exceeds 90% of the standard is shown as follows: <br />t x— (0.9* technical standard) <br />calc = <br />-) <br />773 -180 <br />tcalc = (1489.26l = 2.899 <br />53 / <br />Since critical t table = 0.850 (one - tailed, alpha = 0.2, 52 df) is exceeded by t = 2.899, reclamation <br />success for background woody plant density for Phase Ill BRB PSCM -2 in 2012 is demonstrated. <br />Concentration Area Density <br />Use of a reverse -null t -test of the assertion that the 2012 BRB PSCM -2 Concentration Area woody plant <br />density exceeds 90% of the standard is shown as follows: <br />t talc — x—(0.9* technical standard) <br />rr ll <br />Nrii <br />t calc — 2068 - 1800 -0.775 <br />(2517.2) <br />` 53/ <br />18 <br />