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Regressão não linear quantílica para classificação de sítio em povoamentos de Eucalyptus sp.

2018; Editora da Universidade de São Paulo; Volume: 46; Issue: 120 Linguagem: Inglês

10.18671/scifor.v46n120.04

2318-1222

Carlos Juliano Santos, Cláudio Roberto Thiersch, Monica Fabiana Bento Moreira,

Soil Geostatistics and Mapping

Productive capacity of trees is conventionally estimated by calculated anamorphic or polymorphic site curves; however, these curves have some limitations.Due to these limitations, the objective of this work was to evaluate the creation of growth curves for site classification by the nonlinear quantile regression method and to compare them with the curves generated by the algebraic difference method.The database was collected in two regions of the state of São Paulo (Paulista and Bauru Metropolitan Macro), with 460 measurements in 98 plots with distinct periods in Eucalyptus sp.The site curves were adjusted according to the Chapman-Richards model using the algebraic difference method for anamorphic and polymorphic curves and nonlinear quantum regression (RNLQ).The results of this work allowed us to conclude that the site curves adjusted by the RNLQ method are superior to the curves generated by the algebraic difference method.