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| NETTO,SYLVIO PÉLLICO; AMARAL,MAURICIO K.; CORAIOLA,MARCIO. |
| ABSTRACT Phytosociological analysis in native forests is performed considering the horizontal and vertical structure of the studied population, whose most expressive parameters are the density, dominance, frequency, value of coverage and value of importance of species. Many phytosociological studies include a value of importance of species calculated by adding density, dominance and frequency, in their relative forms, however, this estimator is a mathematical impropriety because the result is a sum of indexes and does not express the true meaning of species' value. This is because the estimator is still influenced predominantly by the density of occurrence of species and cannot capture the relevant hierarchical participation of emerging species that occur... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Light competition index; Phytosociological parameters; Tropical Mixed Forest; Native Forest. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000502265 |
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| NETTO,SYLVIO PÉLLICO; STEFANELLO,FLAVIO R.; PELISSARI,ALLAN L.; DAVID,HASSAN C.. |
| Generally, the forest companies use the total one year planting area as a minimum stratum of the total population and, consequently, the forest inventory processing has been conducted by applying the stratified random sampling to it. This study was carried out in the National Forest of Tres Barras, Brazil, and it aimed to classify and map the sites of Pinus elliottii stands. A systematic sampling was structured into clusters and applied independently by compartments. The clusters, in maltese cross, were composed of four sampling subunits, using Prodan sampling method with a fixed number of six trees. By analysis of the methodology it was possible to confirm the hypothesis: a) the selective thinning cause expressive increase of volumetric variability within... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pinus elliottii; Prodan's sampling method stratification by sites spatial variation. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000402025 |
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