Permanent Plots
Mostrando 1-12 de 60 artigos, teses e dissertações.
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1. NONLINEAR MIXED-EFFECT HEIGHT-DIAMETER MODEL FOR Pinus pinaster AIT. AND Pinus radiata D. DON
ABSTRACT Tree height-diameter (H-D) relationships are important for routine forest assessment. Several H-D relationships have been developed for different species and more are still evolving. This study introduces new H-D model developed for Pinus pinaster and Pinus radiata in Spain, based on data from 184 and 96 permanent sample plots, respectively, collect
CERNE. Publicado em: 2020-03
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2. Permanent wilt point from two methods for different combinations of citrus rootstock
RESUMO: Considerando que a água é extremamente importante na produção agrícola, mas com restrita disponibilidade em algumas regiões brasileiras, é que esse trabalho buscou identificar o limite hídrico inferior para os porta-enxertos: tangerina Cleóptra (Citrus reshni hort. Ex Tan), limão Volkameriano (Citrus Volkameriano Pasquale), citrandarin ‘I
Cienc. Rural. Publicado em: 10/01/2020
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3. Anthropic disturbances as the main driver of a semideciduous seasonal forest fragment in Minas Gerais
Resumo As novas condições ambientais impostas por eventos de distúrbios criam um mosaico de manchas em diferentes estágios sucessionais. Nosso objetivo foi descrever a variação temporal de uma floresta estacional semidecidual em função do histórico de perturbação antrópica, verificando possíveis mudanças na dinâmica e estrutura da floresta. N�
Rodriguésia. Publicado em: 11/11/2019
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4. Effects of cover crops on soil hydraulic properties and yield in a persimmon orchard
ABSTRACT This study evaluated the effects of cover crops on yield and soil hydraulic properties of a persimmon orchard in Turkey. Soil samples were taken from 0-20 and 20-40 cm. Profiles of a clay soil and field capacity, permanent wilting point, available water capacity and saturated hydraulic conductivity of the samples were determined. Festuca rubra subsp
Bragantia. Publicado em: 04/11/2019
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5. Modeling of tree recruitment by artificial neural networks after wood harvesting in a forest in eastern Amazon rain forest
Resumo A modelagem do recrutamento em florestais tropicais é importante para estudos de sustentabilidade do manejo florestal, por dar subsídio adequado à recuperação do estoque de madeira. O objetivo do trabalho foi estimar o recrutamento após a colheita de madeira, empregando um modelo de rede neural artificial (RNA). A área de estudo está localizad
Ciênc. Florest.. Publicado em: 30/09/2019
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6. Estrutura e diversidade de trechos de Cerrado sensu stricto às margens de rodovias no estado de Minas Gerais
Resumo Estradas são um dos principais fatores de degradação conhecidos do Cerrado, pois, apesar de sua relevância econômica, causam recortes em extensas massas contínuas de biota natural. De acordo com o Código Florestal Brasileiro, a vegetação às margens de rodovias deve ser considerada como de preservação permanente. Entretanto, escassos são o
Ciênc. Florest.. Publicado em: 30/09/2019
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7. Alternatives to Growth and Yield Prognosis for Pinus caribaea var. caribaea Barrett & Golfari
ABSTRACT The objective of this study was to obtain regression equations and artificial neural networks (ANNs) for prediction and prognosis of the yield of Pinus caribaea var. caribaea Barrett & Golfari. The data used for modeling comes from measuring the variables diameter at breast height (DBH) and total height (Ht) in 550 temporary plots and 14 circular pe
Floresta Ambient.. Publicado em: 12/09/2019
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8. SITE INDEX FOR PROSOPIS ALBA PLANTATIONS IN THE SEMI-ARID CHACO THROUGH MIXED MODELS
ABSTRACT The classification of sites through curves of Site Index allows to predict the yield of the planted forests at a certain age of the stand and to plan cultural treatments. The goal of this research was to compare linear and non-linear models of fixed effects vs. mixed non-linear models to estimate the site index in plantations of Prosopis alba var Gr
CERNE. Publicado em: 09/09/2019
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9. Decomposition of Leaf Litter in Semideciduous Submontane Forest, in The Southern State of Espírito Santo
ABSTRACT The objective of this work was to understand the relationship between decomposition of leaf litter and climatic elements and determine the mineralization of nutrients in the decomposition process in a fragment of Semideciduous Submontane Forest, located in southern state of of Espírito Santo. Overall, 84 litterbags were deposited in 12 permanent pl
Floresta Ambient.. Publicado em: 29/08/2019
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10. Dynamics of dry tropical forest after three decades of vegetation suppression
ABSTRACT The aim of this study was to analyze the dynamics of the community and shrub-woody individuals in a dry forest in the Brazilian semiarid region after 29 years of vegetation suppression. Individuals with a circumference at 1.30 m above the ground (CBH) ≥ 6 cm were counted and their heights and CBH were measured in 40 permanent plots on three monito
Floresta Ambient.. Publicado em: 01/07/2019
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11. Post-fire recovery of a dense ombrophylous forest in Amazon
Abstract: The fires that occur in the Amazon are as damaging as the deforestation is. There is a need for further long-term studies on dynamics of tree communities in forests affected by fires. In the present study we evaluated the dynamics of tree species, before and after an accidental fire that occurred in 1997 in an experimental area of terra firme fores
An. Acad. Bras. Ciênc.. Publicado em: 19/06/2019
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12. Chave de identificação dendrológica das espécies mais comuns de uma área de Cerrado sensu stricto, Gurupi, Tocantins
Resumo Estudos com chave de identificação dendrológica da flora arbustivo-arbórea do Cerrado no Estado do Tocantins ainda são escassos ou incipientes, promovendo, assim, uma lacuna de informações técnicas e científicas. Portanto, esta pesquisa visa respaldar o estabelecimento de prioridades para futuras estratégias de conservação e planos de mane
Ciênc. Florest.. Publicado em: 30/05/2019