SAMPLING USING THE BITTERLICH METHOD IN Pinus taeda L. PLANTATIONS WITH DISTINCT MANAGEMENT SYSTEMS

The Bitterlich method was studied with multiple basal area factors (BAF) in 3 Pinus taeda L. plantations located the Midwest of Santa Catarina, Brazil using different management regimes: without thinning (1344 trees.ha-1), one (789 and two thinnings (475 trees.ha-1),. Using parameters obtained from censuses, we sought to verify data sample treatments for variables V.ha-1, G.ha-1, N.ha-1 “d” through a completely randomized design each regime observing precision by sampling error accuracy detected real error. It observed that variable less impacted change factor (BAF), but estimates G.ha-1 were more consistent (precision accuracy) equal or than 5, mainly thinned areas. Even no significant differences any BAF experiments, performed greater 5 showed contrasting results managed areas depending on used. Sampling is influenced BAFs, decreasing reduction number trees counted within unit, direct consequence increase. errors always overestimated, regardless dendrometric management. largest between being identified experiment indicated use BAF, requiring intensity.