Inter-relação da produtividade de madeira do pinus com atributos físico-químicos de um latossolo do cerrado brasileiro

Barbosa, Carlos Eduardo Madureira; Ferrari, Samuel; Carvalho, Morel de Passos e; Picoli, Pedro Renan Ferreira; Cavallini, Maria Cecília; Benett, Cleiton Gredson Sabin; Santos, Danilo Marcelo Aires dos

doi:10.1590/s0100-67622012000100004

Cited by 6 publications

(4 citation statements)

References 8 publications

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“…Similarly, Rigatto et al (2005) found significant correlations between yield and pH (r = 0.73), studying the influence of this variable on the wood yield of P. taeda in Telêmaco Borba, PR. Furthermore, Barbosa et al (2012) presented the pH from the 0.00-0.20 m layer (r = 0.49) as an alternative to estimate the wood yield of P. caribaea var. hondurensis in Brazilian Cerrado conditions.…”

Section: Characterization and Correlation Of Variables In Datasetmentioning

confidence: 99%

“…That demands an elucidation of questions related to the yield potential and main limiting factors for production in certain areas. There are several studies relating Pinus taeda to soil properties, such as particle size distribution (Rigatto et al, 2005;Dedecek et al, 2008), organic matter (Gonçalves et al, 2012), solum depth (Morales et al, 2010), and pH (Barbosa et al, 2012). Nonetheless, these evaluations seldom consider relief information and restrict sampling to groups of plots from a continuous inventory, disregarding the variability of soil and topography along the landscape.…”

Section: Introductionmentioning

confidence: 99%

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Edaphic and Topographic Factors and their Relationship with Dendrometric Variation of Pinus Taeda L. in a High Altitude Subtropical Climate

Horst¹,

Dalmolin²,

Caten

et al. 2018

Rev. Bras. Ciênc. Solo

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The study of the relationships between the yield potential of forest stands and the conditions offered for plant development is fundamental for the adequate management of the forest when aiming at sustainable high yields. However, these relations are not clear, especially in commercial forests, on rugged terrain where relationships between the landscape, soil, and plants are more complex. Considering this, we tested the hypothesis that the morphological aspects of the soil conditioned by topography are the main limiting factors for tree development. Our objective was to evaluate the edaphic and topographic influence on the dendrometric variation of Pinus taeda L. of a forest stand in a subtropical climate at high altitude. For that, Spearman's correlation analysis and canonical correspondence were performed on two data datasets containing pedological, topographic, and dendrometric information of a commercial plantation of Pinus taeda, in the Campo Belo do Sul, Santa Catarina state, Brazil. Soil sampling and characterization was performed in two distinct designs. The first design was based on the morphological description of 11 soil profiles. The second was performed with intensive prospecting of the area, with 102 sampling locations determined through conditioned Latin hypercube sampling. For each sampling point, the height and diameter of the four nearest trees were measured and the terrain attributes were calculated from the digital elevation model. The solum depth, the thickness of the superficial horizon, elevation, and vertical distance to channel network were the main conditioning factors of the dendrometric variation, wherein taller trees were found in deeper soils, with a thicker surface horizon, in lower areas that are vertically closer to the drainage network. Our results showed that the selection of topographic and morphological variables has a significant effect on the tree height and should therefore be used to select homogeneous areas for the development of the species. In addition, we showed the importance of using an intensive sampling survey to understand dendrometric variation.

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Section: Characterization and Correlation Of Variables In Datasetmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Edaphic and Topographic Factors and their Relationship with Dendrometric Variation of Pinus Taeda L. in a High Altitude Subtropical Climate

Horst¹,

Dalmolin²,

Caten

et al. 2018

Rev. Bras. Ciênc. Solo

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“…However, eucalyptus trees have been planted in regions of Cerrado, whose soils are predominantly highly weathered and acid, with low nutrient availability, low aggregation, exposed to prolonged dry seasons, which can lead to decreased productivity of wood (BARBOSA et al, 2012). To avoid decreases in productivity, it is necessary to use monitoring and evaluation methods to determine which are the variables that most affect the development and productivity of Eucalyptus.…”

Section: Introductionmentioning

confidence: 99%

Classification of the Initial Development of Eucaliptus Using Data Mining Techniques

Lima¹,

Souza²,

Montanari

et al. 2017

CERNE

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ABSTRACT:Eucalyptus plantation has expanded considerably in Brazil, especially in regions where soils have low fertility, such as in Brazilian Cerrados. To achieve greater productivity, it is essential to know the needs of the soil and the right moment to correct it. Mathematical and computational models have been used as a promising alternative to help in this decisionmaking process. The aim of this study was to model the influence of climate and physicochemical attributes in the development of Eucalyptus urograndis in Entisol quartzipsamment soil using the decision tree induction technique. To do so, we used 30 attributes, 29 of them are predictive and one is the target-attribute or response variable regarding the height of the eucalyptus. We defined four approaches to select these features: no selection, Correlationbased Feature Selection (CFS), Chi-square test (χ 2 ) and Wrapper. To classify the data, we used the decision tree induction technique available in the Weka software 3.6. This data mining technique allowed us to create a classification model for the initial development of eucalyptus. From this model, one can predict new cases in different production classes, in which the individual wood volume (IWV) and the diameter at breast height (DBH) are crucial features to predict the growth of Eucalyptus urograndis, in addition to the presence of chemical soil components such as: magnesium (Mg +2 ), phosphorus (P), aluminum (Al +3 ), potassium (K + ), potential acidity (H + Al), hydrogen potential (pH), and physical attributes such as soil resistance to penetration and related to climate, such as minimum temperature. CLASSIFICAÇÃO DO DESENVOLVIMENTO INICIAL DO EUCALIPTO UTILIZANDO TÉCNICAS DE MINERAÇÃO DE DADOSRESUMO: O cultivo de eucalipto tem se expandido consideravelmente no Brasil, sobretudo em regiões em que os solos apresentam baixa fertilidade, como nos Cerrados brasileiros. Para alcançar maiores produtividades, é fundamental saber a necessidade e o momento adequado para correção do solo. Para auxiliar esse processo de tomada de decisão, modelos matemáticos e computacionais têm sido utilizados e são uma alternativa promissora. O objetivo deste trabalho foi modelar a influência dos atributos físico-químicos do solo e climáticos no desenvolvimento do Eucalyptus urograndis em Neossolo Quartzarênico, por meio da técnica de indução da árvore de decisão. Para isso foram utilizados 30 atributos, sendo 29 preditivos e um atributo-meta ou variável resposta, a saber, a altura do eucalipto. Foram avaliadas quatro abordagens para seleção de atributos: sem seleção, seleção de atributos baseado em correlação (CFS), método do Qui-quadrado (χ 2 ) e Wrapper. Para classificar os dados foi utilizada a técnica de indução de árvore de decisão por meio do software Weka 3.6. As técnicas de mineração de dados através da indução de árvore de decisão permitem o desenvolvimento de um modelo de classificação do desenvolvimento inicial de eucalipto eficiente para previsão de novos casos em diferentes classes de produção, onde o v...

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“…In addition, highly weathered Cerrado soils have low fertility, low cation exchange capacity (CTC), high aluminum saturation and high acidity (Barbosa et al, 2012). Without correcting these soils, eucalyptus, like other crops, has its development impaired, since it finds impediments to the growth of the root system, responsible for the absorption of water and nutrients necessary for the crop cycle, thus affecting productivity (Costa et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Specific Management Areas as a Function of Dendrometric Properties of Eucalyptus and Physical-Chemical Attributes in an Oxisol

Galindo¹,

Montanari²,

Martins³

et al. 2018

JAS

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Eucalyptus cultivation has expanded considerably in Brazil, especially in regions where soils have low fertility, as in the Brazilian Cerrado (Brazilian Savannah). In order to achieve high yield, it is necessary to know the appropriate time and place to perform the soil management, and to assist in this decision-making process, mathematical and computational models has been used and are a promising alternative. The objective of this study was to model the influence of plant and soil physical-chemical attributes on Eucalyptus camaldulensis cultivation in an Oxisol (Latossolo Vermelho distrófico), with clayey texture with the purpose of demonstrating specific management areas closely associated with eucalyptus development. An experimental grid of approximately 2 hectares (ha) containing 40 sampling points were installed and later soil and plant attributes were collected for the determination of physical and chemical attributes in the 0-0.20 m and 0.20-0.40 m layers in Selvíria, MS, Brazil. The results were analyzed using classical and geostatistical statistics. The spatial dependence varied according to the physical attribute evaluated and the depth of sampling. In addition to the vertical variability, there was also horizontal variability between depths, since for the same attribute the range was different between the sampled layers.

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Inter-relação da produtividade de madeira do pinus com atributos físico-químicos de um latossolo do cerrado brasileiro

Cited by 6 publications

References 8 publications

Edaphic and Topographic Factors and their Relationship with Dendrometric Variation of Pinus Taeda L. in a High Altitude Subtropical Climate

Edaphic and Topographic Factors and their Relationship with Dendrometric Variation of Pinus Taeda L. in a High Altitude Subtropical Climate

Classification of the Initial Development of Eucaliptus Using Data Mining Techniques

Specific Management Areas as a Function of Dendrometric Properties of Eucalyptus and Physical-Chemical Attributes in an Oxisol

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