Site index curves in eucalyptus plantation obtained by quantile regression

被引：7
|
作者：
Araujo Junior, Carlos Alberto [1 ]
Boechat Soares, Carlos Pedro [1 ]
Leite, Helio Garcia [1 ]
机构：
[1] Univ Fed Vicosa, Dept Engn Florestal, Ave Purdue S-N,Campus Univ, BR-36570900 Vicosa, MG, Brazil
来源：
PESQUISA AGROPECUARIA BRASILEIRA | 2016年 / 51卷 / 06期
关键词：
Eucalyptus; outliers; guide curve method; ordinary least squares; percentile; CLASSIFICATION; GROWTH; DISTRIBUTIONS; CONSTRUCTION; STANDS; MODELS; SIZE; AREA;
D O I：
10.1590/S0100-204X2016000600003
中图分类号：
S [农业科学];
学科分类号：
09 ;
摘要：
The objective of this work was to obtain site index curves in eucalyptus plantations by quantile regression, and to compare them to the obtained ones with the use of fitted regressions by the method of ordinary least squares. Quantile regression can be used to generate site index curves, especially in the presence of outliers. The method generates a bundle of curves better adjusted to the observed data, compared to the one generated with the estimates of ordinary least squares, either by the guide curve method (anamorphic curves) or by polymorphic curves (using different percentiles).
引用
收藏
页码：720 / 727
页数：8
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