Biomassa arbórea e de sub-bosque e da serapilheira acumulada em povoamentos de &lt;em&gt;Eucalyptus urophylla&lt;/em&gt; x &lt;em&gt;Eucalyptus grandis&lt;/em&gt;

Salvador, Simone Martini; Schumacher, Mauro Valdir; Stahl, James; Santos, Joel Carvalho dos

doi:10.5902/2316980x19414

Cited by 3 publications

(3 citation statements)

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“…For the estimation of the total amount of macronutrient, we computed the product between the nutrient content and the dry biomass for each component. A detailed description of the methodology adopted for biomass determination can also be found in Salvador et al (2015).…”

Section: Biomass and Nutrientsmentioning

confidence: 99%

Removal of nutrients due to biomass harvest of Eucalyptus urograndis in different soils: macronutrients

Salvador¹,

Ludvichak²,

Momolli³

et al. 2021

Rev. ambiente água

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Intensive management of forest stands can increase biomass production, as well as increase the removal of nutrients from the site. This study therefore sought to simulate different harvest intensities and to calculate the nutrient-use efficiency of Eucalyptus urograndis in different types of soil. The study was carried out in a plantation of seven-year-old hybrid E. urograndis in the city of Telêmaco Borba, Paraná, Brazil. The study site included two sub areas with sandy soil and clayey soil (Cambisols Inceptisol and Ferralsols Oxisols, respectively). Using biomass and nutrients stock data, nutrient removal was simulated under five different harvest scenarios. Nutrient-use efficiency was obtained from the relation between the amount of biomass and nutrients of each tree component. Harvesting the whole tree resulted in the removal of approximately 61% of the nutrients from the site in sandy soil, while in clayey soil 57% of the nutrients were removed. With harvesting of only the commercial stemwood, only 22% of the nutrients were removed from the sandy soil, and 21% from the clayey soil. Stemwood was the component that had the highest nutrient-use efficiency values for all the analyzed nutrients. In conclusion, to achieve nutritional sustainability of E. urograndis stands, the best harvesting system involves the removal of only commercial stemwood. For the production of stemwood, sandy soils have a greater biological efficiency of calcium and magnesium when compared to clayey soil.

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Section: Biomass and Nutrientsmentioning

confidence: 99%

Removal of nutrients due to biomass harvest of Eucalyptus urograndis in different soils: macronutrients

Salvador¹,

Ludvichak²,

Momolli³

et al. 2021

Rev. ambiente água

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“…The total biomass per hectare was estimated based on the biomass of each tree and the number of trees per hectare. A detailed description of the methodology adopted for biomass determination can also be found in Salvador et al [11].…”

Section: Measurements Of Biomass and Nutrientsmentioning

confidence: 99%

Effects of Soil Type in Nutrient Amount in Eucalyptus urograndis: Macronutrients

Salvador¹,

Schumacher²,

Stahl³

et al. 2019

JEAI

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The aim of the present study was to quantify macronutrient stock in the hybrid Eucalyptus urograndis, for different soil types in Telemaco Borba, Parana, Brazil. Sandy texture (Cambisols Inceptisols), and clayey texture (Ferralsols Oxisols) soils were selected for the study. Based on the diameter at breast height (DBH) survey of all the trees comprising each plot, 12 trees were selected per soil type for biomass sampling. The trees were sectioned at soil level and separated into: leaves, branches, stembark, stemwood, tree tops wood, tree tops bark and roots, and a representative sample of each component was collected and grounded in a Wiley-type mill for analytical determination of the macronutrients. The analyses of the experiment were performed considering a completely randomized design. The concentrations of the macronutrients in the different biomass components were significantly different in both types of soil. With the exception of calcium, in the sandy soil and calcium and magnesium in the clayey soil, which were more present in the stembark component, the other components present the highest concentration values in the leaves component. The lowest concentration values of macronutrients, both for the sandy soil and for the clayey soil, were found in the stemwood and roots components. Total nutrient stock found in the biomass, in the sandy soil was 1.65 Mg ha-1, distributed in the following order of magnitude: stemwood > root > stembark > leaves > branches > tree tops wood > tree tops bark. For the clayey soil the order was: stemwood > stembark > root > branches > leaves > tree tops wood > tree tops bark, presenting a total stock of 2.41 Mg ha-1. The highest amount of macronutrients in the biomass was found in soil with a clayey texture.

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“…As estimativas de biomassa disponíveis na literatura vêm de estudos que se utilizam de métodos diretos e indiretos. Segundo Sanquetta et al (2014), o método direto consiste na derrubada e pesagem de todas as árvores que ocorrem em parcelas fixas, fornecendo estimativas. No método indireto, as estimativas são feitas a partir de dados de inventários florestais e no emprego de fatores ou equações, sendo o volume da madeira, a principal variável.…”

Section: Introductionunclassified

Biomassa aérea e NDVI em zona ecotonal cerrado-caatinga da Flona de Palmares, Altos, Piauí, Brasil

Brandão

Iwata

Alencar

et al. 2020

RICA

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A estimativa da biomassa é uma forma de avaliar a quantidade de material biológico de uma floresta quanto à sua conversão de energia e ciclagem de nutrientes, como também estudos referentes à biomassa vegetal e à composição nutricional das plantas podem compor um importante banco de dados para o desenvolvimento de programas de conservação. A vegetação aérea exerce uma importante função na avaliação de um ecossistema florestal. Diante disso o estudo teve como objetivo quantificar a biomassa da vegetação aérea e analisar a sua relação com o NDVI da Floresta Nacional de Palmares, Altos, Piauí. O estudo foi realizado em uma unidade de conservação de uso sustentável, a Floresta Nacional dos Palmares está localizada na Zona Rural do município de Altos – PI, tendo como limite a capital Teresina. Foram considerados nessa pesquisa apenas os indivíduos que estavam dentro das parcelas de 20m x 20m, coletadas em 09 glebas, totalizando uma área de 168 ha. Foram incluídos nesse estrato todos os indivíduos com a circunferência na altura do peito (CAP) igual ou superior a 15 cm. Com o NDVI foi possível ter uma visualização da vegetação da Flona, e assim fazer uma comparação com os resultados da biomassa, que foram coerentes com a imagem do NDVI. A biomassa total em árvores vivas e mortas na Flona de Palmares foi estimada em 313.050 Mg/ha, no período seco de 2019.

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Biomassa arbórea e de sub-bosque e da serapilheira acumulada em povoamentos de <em>Eucalyptus urophylla</em> x <em>Eucalyptus grandis</em>

Cited by 3 publications

References 3 publications

Removal of nutrients due to biomass harvest of Eucalyptus urograndis in different soils: macronutrients

Removal of nutrients due to biomass harvest of Eucalyptus urograndis in different soils: macronutrients

Effects of Soil Type in Nutrient Amount in Eucalyptus urograndis: Macronutrients

Biomassa aérea e NDVI em zona ecotonal cerrado-caatinga da Flona de Palmares, Altos, Piauí, Brasil

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