Variabilidade espacial de propriedades dendrométricas do eucalipto e de atributos físicos de um Latossolo Vermelho

Filho, Gilberto Rosa; Carvalho, Morel de Passos e; Montanari, Rafael; Silva, Janete Motta da; Siqueira, Glécio Machado; Zambianco, Edmar Casarin

doi:10.1590/s0006-87052011000200027

Cited by 12 publications

(4 citation statements)

References 20 publications

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“…However, there was no significant correlation between the eucalyptus attributes and any of the soil attributes that were studied. The correlation between H and DGL was expected, and has also been observed by other researchers (Lima, Carvalho, Narimatsu, Silva, & Queiroz, 2010;Rosa Filho et al, 2011;Carvalho et al, 2012).…”

Section: Resultssupporting

confidence: 87%

Soil preparation systems and type of fertilization as affecting physical attributes of cohesive soil under eucalyptus in Northeastern Brazil

Nunes¹,

Leite²,

Lima³

et al. 2022

Acta Sci. Agron.

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Cohesive Oxisols are widely used for cultivating eucalyptus in the Coastal Tablelands of the northeastern region of Brazil. However, mechanization and plant cultivation in these soils are difficult because of their cohesive layers. Therefore, the objective of this study was to identify better combinations between tillage systems and types of fertilization to improve the physical attributes of cohesive soil, with the aim of improving eucalyptus growth. The experimental design was completely randomized in a 4 × 2 factorial scheme (soil preparation × fertilization). The tillage systems tested were: i) conventional tillage (CT) - one plowing combined with two harrowings, ii) minimum tillage (MT) - subsoiling down until 0.57 m depths in the planting line, iii) no-tillage type 1 (NT1) - planting in 0.3 m-deep pits, and iv) no-tillage type 2 (NT2) - planting in 0.6 m-deep pits. The types of fertilization tested were mineral (MF) and organic fertilization (OF). The diameter of the soil aggregates was reduced after being subjected to any combination of cohesive soils. Furthermore, OF provided the best levels of plant-available water, attenuating the adverse conditions of the cohesive layer. MT, NT1, and NT2 improved the soil physical attributes when compared to CT. Therefore, the combination of either NT1 or NT2 with OF, followed by the combination of either NT1 or NT2 with MF, was determined to be the best way to cultivate eucalyptus on cohesive soils.

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Section: Resultssupporting

confidence: 87%

Soil preparation systems and type of fertilization as affecting physical attributes of cohesive soil under eucalyptus in Northeastern Brazil

Nunes¹,

Leite²,

Lima³

et al. 2022

Acta Sci. Agron.

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show abstract

“…Trabalhos utilizando essa técnica em florestas foram elaborados por Höck et al (1993), Biondi et al (1994), Nanos et al (2001), Rufino et al (2006), Kanegae et al (2006), Brandelero et al (2007), Bognola et al (2008), Mello et al (2009), Leal et al (2011), Rosa et al (2011), Santos et al (2011), Gonçalves et al (2012, Carvalho et al (2012), Guedes et al (2012) e Pelissari et al (2014, entre outros.…”

Section: Introductionunclassified

Inventário Florestal Utilizando Técnicas de Silvicultura de Precisão em Povoamentos de Eucalyptus grandis Hill ex Maiden

Santos¹,

Roveda

Zanon

et al. 2016

Floresta Ambient.

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RESUMOEste estudo teve por objetivo determinar o estoque de madeira por amostragem sistemática e pelas tecnologias de geoinformação a fim de elaborar mapas de produtividade florestal, como forma de pós-estratificação do inventário florestal. Foram alocadas 24 parcelas de 625 m 2 posicionadas a cada 70 m de distância. O mapa de produtividade foi gerado após seleção de um modelo para ajuste do semivariograma entre os volumes das parcelas. Estimou-se um volume total de 3.753,9 m 3 com o inventário florestal por amostragem sistemática, enquanto com o mapa de produtividade elaborado com técnicas de silvicultura de precisão determinou-se um volume total de 3.768,9 m 3 . A análise de variância comprovou que existe diferença significativa entre as médias dos estratos e a partir desta constatação as estimativas foram geradas por estrato, estimando-se então, um volume total de 3.772,9 m 3 . A técnica de silvicultura de precisão mostrou ser uma ferramenta eficiente na pós-estratificação de inventários florestais.Palavras-chave: variabilidade espacial, geoestatística, produtividade florestal. Forest Inventory Using Precision Forestry Techniques in Eucalyptus grandis Hill ex Maiden Stands ABSTRACTThis study aimed to determine the wood stock through systematic sampling and geoinformation technologies in order to elaborate maps of forest productivity as a forest post-stratification inventory. We positioned 24 plots of 625 m 2 each ina distance of 70 m from each other. The yield map was generated after selecting a model for semivariogram adjustment between volumes in the plots. A 3,753.9 m 3 total volume was estimated in the forest inventory through systematic sampling, while the yield map produced with precision forestry techniques showed a total volume of 3,768.9 m 3 . The analysis of variance showed that there is a significant difference between the means of the strata and based on this fact, the estimates were generated per stratum, then the total volume of 3,772.9 m 3 was estimated. The precision forestry technique proved to be an efficient tool in the post-stratification of forest inventories.

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“…Como exemplo, pode-se citar RUFINO et al (2006) e ROSA FILHO et al (2011, que espacializaram e mapearam os padrões espaciais das respectivas variáveis dendrométricas: altura dominante, altura total média, área basal, diâmetro médio quadrático, número de fustes, e volume. De modo geral, esses autores obtiveram resultados positivos no que tange a dependência espacial entre os dados.…”

Section: Introductionunclassified

MODELAGEM GEOESTATISTICA DOS SORTIMENTOS VOLUMETRICOS EM POVOAMENTOS DE Pinus sp.

Calixto¹,

Pelissari²,

Roveda³

et al. 2017

Agrarian

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Variabilidade espacial de propriedades dendrométricas do eucalipto e de atributos físicos de um Latossolo Vermelho

Cited by 12 publications

References 20 publications

Soil preparation systems and type of fertilization as affecting physical attributes of cohesive soil under eucalyptus in Northeastern Brazil

Soil preparation systems and type of fertilization as affecting physical attributes of cohesive soil under eucalyptus in Northeastern Brazil

Inventário Florestal Utilizando Técnicas de Silvicultura de Precisão em Povoamentos de Eucalyptus grandis Hill ex Maiden

MODELAGEM GEOESTATISTICA DOS SORTIMENTOS VOLUMETRICOS EM POVOAMENTOS DE Pinus sp.

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