%0 Journal Article
%T Growth Stratification Applied to Prognosis of Diametric Structure in Araucaria Forest
%A Sylvio P¨¦llico Netto
%A £¿ngelo Augusto Ebling
%A Emanuel Jos¨¦ Gomes de Ara¨²jo
%J Journal of Applied Mathematics and Physics
%P 753-761
%@ 2327-4379
%D 2014
%I Scientific Research Publishing
%R 10.4236/jamp.2014.28083
%X <p align=\"justify\">
	<span style=\"font-family:;\" cambria?,?serif?;font-size:10pt;?=\"\"><span style=\"font-family:Verdana;\">The forest management, in </span><span style=\"font-family:Verdana;\">broad terms, covers a set of information and activities related to the growth </span><span style=\"font-family:Verdana;\">and production of plantations or from heterogeneous forests. If on one hand </span><span style=\"font-family:Verdana;\">forest plantation presents homogeneous dendrometric characteristics, on the </span><span style=\"font-family:Verdana;\">other hand in heterogeneous forests such a configuration does not exist, which </span><span style=\"font-family:Verdana;\">requires the application of essential mathematical estimates for the forest management </span><span style=\"font-family:Verdana;\">planning, for example, the prognosis of diametric structure. In this respect, </span><span style=\"font-family:Verdana;\">refinements can be tested in traditionally used mathematical models, aiming at </span><span style=\"font-family:Verdana;\">more accurate results. These facts substantiate the following hypotheses: the </span><span style=\"font-family:Verdana;\">stratification of the diameter increments can provide estimates with greater </span><span style=\"font-family:Verdana;\">accuracy and more precise results for the prognosis. With the stratification of </span><span style=\"font-family:Verdana;\">diameter increment made it possible to get better results for the prognosis for </span><span style=\"font-family:Verdana;\">a 4-year period, allowing the forest manager to better work with estimators either </span><span style=\"font-family:Verdana;\">for diameter classes as well as for the forest to be managed. Using the data </span><span style=\"font-family:Verdana;\">structure of trees (DBH ¡İ 9.5 cm) of the National Forest of Sao Francisco de </span><span style=\"font-family:Verdana;\">Paula, RS, Brazil, the diameter increment of species was stratified into four </span><span style=\"font-family:Verdana;\">statistically different strata. Using data sampled between the years of 2000 to </span><span style=\"font-family:Verdana;\">2004, it was carried out prognosis for the year 2008, using the stratified and </span><span style=\"font-family:Verdana;\">not stratified data. The estimates were compared with the observed values by </span><span style=\"font-family:Verdana;\">the Kolmogorov-Smirnov (K-S) test, which attested goodness of fit only for the </span><span style=\"font-family:Verdana;\">estimates from the stratified values. The prognosis estimated by
%K Diameter Projection
%K Forest Management
%K Heterogeneous Forest
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=47575