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IDENTIDADE EM MODELOS HIPSOMÉTRICOS PARA Tectona grandis COM DIFERENTES ESPAÇAMENTOS EM CÁCERES-MT
| Content Provider | Semantic Scholar |
|---|---|
| Author | Vendruscolo, Diogo Guido Streck Chaves, Arthur Guilherme Schirmbeck Silva, Raiane Scandiane Da Souza, Hudson Santos Medeiros, Reginaldo Antonio Motta, Alessandro Soares Da Silva, Fernando Thiago Da |
| Copyright Year | 2015 |
| Abstract | Os objetivos deste estudo foram: ajustar e validar um modelo tradicional de relacao hipsometrica para plantios equiâneos de Tectona grandis, sob diferentes arranjos espaciais, e testar a possibilidade de reduzir o numero de equacoes entre os arranjos por meio do teste de identidade de modelos. O plantio e um experimento constituido por quatro espacamentos arranjados em fileiras duplas: 3x2x2 m, 4x2x2 m, 5x2x2 m e 6x2x2 m, em blocos ao acaso com tres repeticoes. O modelo utilizado para representar a relacao hipsometrica foi o de Curtis. Os dados de diâmetro a 1,3 m de altura (DAP) foram coletados por meio de censo florestal, e separados em classes diametricas. As alturas foram obtidas, seguido a distribuicao diametrica do povoamento em cada espacamento. Apos ajustadas as equacoes e aplicado o teste de identidade, as equacoes foram validadas pela estatistica qui-quadrado. Analisando os resultados, conclui-se que o modelo de Curtis e acurado para a estimativa da altura total de Tectona grandis e o teste de identidade revelou que e possivel utilizar uma unica equacao (com os mesmos parâmetros) para os arranjos 4x2x2 m, 5x2x2 m e 6x2x2 m, diminuindo de forma expressiva a quantidade de equacoes em futuros inventarios. No teste da validacao, verificou-se que as equacoes sao recomendadas para estimativa da altura total de Tectona grandis . Palavra-chave: Teca, arranjos espaciais, estimativa da altura, validacao de equacoes. IDENTITY IN HYPOSMETRIC MODELS FOR Tectona grandis WITH DIFFERENT SPACING IN CACERES - MT ABSTRACT The aim of this study were to adjust and validate a traditional model of hypsometric relation to even-aged Tectona grandis plantations under different spatial arrangements, and test the possibility of reducing the equations number between layouts by identity test of models. Planting is an experiment which consists of four spacing arranged in double rows: 3x2x2m, 4x2x2m, 5x2x2m, 6x2x2m in randomized blocks design with three replications. The model used to represent the hypsometric relation was Curtis. The data of diameter at 1.3 m height (DBH) were collected through forest census, and separated into diameter classes. The heights were obtained, followed by the diameter distribution of the stand at each spacing. After fitting equations and applying the identity test, the equations were validated by the chi- square statistic. Analyzing the results, it is concluded that the Curtis model is accurate to the estimate the total height of Tectona grandis and the identity test revealed that it is possible to use a single equation (with the same parameters) for arrangements 4x2x2m, 5x2x2m, 6x2x2 m, decreasing significantly the number of equations in future inventories. In the validation test was found that the equations are recommended to estimate the total height of Tectona grandis. Keywords: Teak, spatial arrangements, height estimation, equations validation. DOI: http://dx.doi.org/10.14583/2318-7670.v03n01a07 |
| Starting Page | 44 |
| Ending Page | 49 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| DOI | 10.14583/2318-7670.v03n01a07 |
| Alternate Webpage(s) | http://www.bibliotekevirtual.org/revistas/NATIVA/v03n01/v03n01a07.pdf |
| Alternate Webpage(s) | https://doi.org/10.14583/2318-7670.v03n01a07 |
| Volume Number | 3 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
