Caracterização da produtividade florestal e dos padrões de crescimento de Pinus taeda L. no sul do Brasil através de análise de tronco

Gonçalves (3) , clayton alcarde alvares (2) , Gabriel ramatis Pugliese andrade (3) , antonio carlos azevedo (3) , James Stahl (4) and antônio maurício moreira (5)(1) Auditor Lead Assessor ISO 14.001 para certificação Florestal Cerflor/FSC® e certificação agrícola RAS, São Pedro, São Paulo, Brasil. 1.00-1.40, 1.40-1.80, and 1.80-1.90 m. the quantity and concentration of nutrients, as well as mineralogical characteristics, were determined for each soil sample. three scenarios of harvesting intensities were simulated: wood removal (a), wood and bark removal (b), and wood + bark + canopy removal (c). the sum of all biomass components was 313 mg ha -1 . the stocks of nutrients in the trees decreased in the order n>ca>k>S>mg>P. the mineralogy of the Cambissolo Húmico Alumínico léptico showed the predominance of quartz sand and small traces of vermiculite in the silt fraction. clay is the main fraction that contributes to soil weathering, due to the transformation of illite-vermiculite, releasing k. the depletion of

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“…The results are consistent with the average productivity of major forest companies in Brazil (Munhoz, 2011;Gonçalves et al, 2013).…”

Section: Pinus Taeda Standsupporting

confidence: 86%

Sustainability of Wood Productivity of Pinus TaedaBased on Nutrient Export and Stocks in the Biomass and in the Soil

Sixel

Junior

Gonçalves

et al. 2015

Rev. Bras. Ciênc. Solo

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“…Décadas de estudos no Brasil mostram que as produtividades mais elevadas do P. taeda são encontradas em solos com maior teor de argila e mais férteis, destacando-se a capacidade de troca catiônica, fósforo e nitrogênio (BIZON, 2005;BOGNOLA et al, 2010;DEDECEK et al, 2008;LASO GARICOITS, 1990;MUNHOZ, 2011). Moro et al (2014), relata que a adição de macronutrientes aumentou o estoque de madeira em plantios com 5 e 9 anos de idade, sugerindo a adubação em plantios já estabelecidos como uma alternativa de manejo para aumentar a produtividade em solos de baixa fertilidade no sul do Brasil.…”

Section: Lista De Figurasunclassified

“…O uso e eficiência de uso dos nutrientes também é um tema abordado na ecologia da produção, sendo o nitrogênio considerado um dos nutrientes mais importantes para o crescimento e desenvolvimento da planta MURTHY et al, 1996), devido a sua influência nas características fotossintéticas da folha (LANDSBERG; SANDS, 2011).…”

Section: Lista De Figurasunclassified

Influência dos fatores edafoclimáticos na produtividade e na eficiência do uso dos recursos naturais do Pinus taeda L. sob distintos manejos no Sul do Brasil

Munhoz¹

Self Cite

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Edaphoclimatic factors influence on productivity and efficiency use of natural resources of loblolly pine under different managements in southern Brazil Due to the improvement of silviculture practices and breeding for the selection of more productive genotypes, the loblolly pine productivity in Brazil is recognized as one of the biggest in the world. Even with the high productivity at certain sites, its variation is large. It is known that the availability of water, light and nutrients are essential for the wood production, and that the use efficiency of these resources influences the productivity variation. However, the absence of fertilization in pine plantations is majority in the commercial areas in Brazil due to good growth in low fertility soils and it hardly presents visual nutrient deficiency. To understand which factors influence the production and biomass partitioning, it is necessary to study the production ecology. Thus, the present work has as main objectives: i) to study the influence of different soil classes in loblolly pine growth; ii) to study the productivity response submitted to fertilization and thinning; iii) to evaluate the light interception; and iv) to estimate the growth efficiency (GE), use of light (LUE) and nitrogen (NUE) in loblolly pine stands in southern Brazil. For this study, it was used quadriplots from the experimental network of Pinus Potential Productivity in Brazil program, which composes an edaphoclimatic gradient in Parana and Santa Catarina states. The plots were submitted to the following treatments: control (C), fertilized (F), thinning (T), thinning and fertilized (TF). It was calculated the site index, the annual increment, the mean annual increment, the stand uniformity index, wood net primary productivity and the leaf area index (LAI). The soil (0-20 cm) and foliar analyzes were held. Data from the calculated climate variables was obtained from the closest weather stations to the evaluated sites. The minimum and maximum productivity of control plots were, respectively, 20.3 and 56.9 m³ ha-1 yr-1 with an average age of 13 years. There was a significant effect of F and TF treatments, with maximum gain in volume stock of 33 and 63%, respectively. The response of fertilization and fertilization with thinning occurred in less fertile areas and with lower soil organic matter content. The stands uniformity correlated positively with the basal area in 2014 and the GE, LUE and NUE calculated in 2013. The mean values of GE, LUE and NUE at the average age of 12,4 years were 2.1 Mg ha-¹ LAI-¹, 0.55 g MJ-¹ and 93 kg wood kg-¹ N year-¹, respectively. There was a positive linear relationship of GE, LUE and NUE with the production of total biomass above ground. The soil variables influenced more on the use efficiency of natural resources than climatic variables.

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“…Modificado de Alvares et al (2013) SPELTZ;CAMPOS, 1982;ALBAUGH et al, 1998;SAMUELSON et al, 2008;MUNHOZ, 2011;MORO et al, 2014), sendo em alguns casos resultado da redução na alocação de biomassa para as raízes e aumento na alocação para o tronco.…”

Section: Lista De Figurasunclassified

“…hondurensis; PTA = P. taeda; FI = fertilizado e irrigado; SN = controle; ∆ diferença anual no carbono estocado no: Ct = troncos da rotação anterior; Cr = raízes grossas > 10 mm; Cl = serapilheira depositada; TBCF = fluxo de carbono enviado para o solo; GPP = produtividade primária bruta A diferença climática entre os anos estudados influenciou a queda de folhedo, principalmente para a espécie tropical que teve uma redução de, aproximadamente, 40% na deposição, enquanto o P. taeda apenas 11%. ABER; MELILLO, 1985;RAICH, 1989, NADELHOFFER, 1998.…”

Section: Produtividade Primária Líquida Da Parte Aérea (Anpp)unclassified

Captura e alocação de carbono em Pinus taeda e Pinus caribaea var. hondurensis sob manejos hídricos e nutricionais distintos

Deliberali¹

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Caracterização da produtividade florestal e dos padrões de crescimento de Pinus taeda L. no sul do Brasil através de análise de tronco

Abstract: ERRATA MUNHOZ, J.S.B. Caracterização da produtividade florestal e dos padrões de crescimento de Pinus taeda L. no sul do Brasil através de análise de tronco.

Cited by 5 publications

References 53 publications

Sustainability of Wood Productivity of Pinus TaedaBased on Nutrient Export and Stocks in the Biomass and in the Soil

Sustainability of Wood Productivity of Pinus TaedaBased on Nutrient Export and Stocks in the Biomass and in the Soil

Influência dos fatores edafoclimáticos na produtividade e na eficiência do uso dos recursos naturais do <i>Pinus taeda</i> L. sob distintos manejos no Sul do Brasil

Captura e alocação de carbono em <i>Pinus taeda</i> e <i>Pinus caribaea</i> var. <i>hondurensis</i> sob manejos hídricos e nutricionais distintos

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