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1 <br />VEGETATION SAMPLING FOR 1996 <br />zoraxr~x:;~nessm::n:a:a:s~xxx:'cx;:x:^~w;mmzar:.z:a~::x;:ocsx.'~'~.^,s, -:':ax:'+xnxx~s ,. .e~:oaxxr.-.aet <br />' METHODS <br />' Vegetative cover was sampled on July 22, 1996 using 50-meter point-intercept transects. The <br />reclaimed azeas and the reference area were sampled separately. Sampling transects for all azeas <br />sampled aze provided on Figures 1 and 2. <br />Ten transects were conducted in each of the azeas. Sample size was determined as sufficient using <br />' the Snedecor-Cochran sample adequacy formula (equation ]). <br />' (1) <br />Nmin = (~s2)-(dx)2 <br />' where: <br />Nm;n =the minimum number of observations needed, <br />' t =the t-table value for atwo-tailed t-test with (n-1) degrees of freedom at the 90% <br />confidence level, <br />t sZ =the sample variance, <br />d = .1 (level of precision for estimate of the mean to be within 10% of the actual <br />mean), and, <br />' x =sample mean. <br />' The ten transects were randomly located and oriented in each area. Transect locations or <br />orientations that resulted in overlap of previous transects or the sampling area boundary were <br />randomly redirected prior to the point of overlap. <br />' Data from the transects were used to determine sample size adequacy. Sample size adequacy was <br />reached in both areas with ten transects (Table 1). <br />' Ground cover was evaluated along each transect by sampling two points (1.0-meter apart) at <br />1.0-m. intervals. Cover was classified as vegetation, litter, or rock. Lack of cover was classified <br />' as bare soil. Vegetation was further classified by species. Each transect consisted of 50 point , <br />samples. <br />i _~ <br />' eom.mnm~.ivsss~P~mx~ i~, i4ve A-1 <br />