&lt;b&gt;Soil water balance in different densities of &lt;i&gt;Pinus taeda&lt;/i&gt; in Southern Brazil

Souza, Jorge Luiz Moretti de; Fezer, Kharyn Freitas; Gurski, Bruno César; Jerszurki, Daniela; Pachechenik, Paulo Eugênio

doi:10.4025/actasciagron.v38i2.26607

Cited by 5 publications

(3 citation statements)

References 17 publications

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“…Measuring evapotranspiration in the case of cultivated plants is less complicated due to the nature and dimensions of the plants. In contrast, for trees, the process is extremely complex bearing in mind also the soil water balance and spatial structure [16], the specific water use, and the age of the trees [13; 17].…”

Section: Introductionmentioning

confidence: 99%

Estimation of evapotranspiration empirical coefficients of scots pine (Pinus sylvestris) under climate change conditions

Żyromski

Wdowikowski

Kaźmierczak

2023

22nd International Scientific Conference Engineering for Rural Development Proceedings

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The aim of this study was to assess the feasibility of estimating the evapotranspiration of Scots pine (Pinus silvestris) using an indirect method. The field experiment was conducted at the Agro and Hydrometeorology Observatory of the Faculty of Environmental Engineering and Geodesy of the Wrocław University of Life Sciences in Poland from 1 May to 31 October from 2016 to 2019. The experiment covered the period from the 6th to the 9th year of cultivation of Scots pine (Pinus silvestris) on arable land. Evapotranspiration of Scots pine (ETR) was measured in soil evaporometers of 0.3 m2 and 0.7 m soil monolith thickness, with a daily time step, in triplicate. In order to avoid the oasis effect, the soil evaporometers were installed so that the measured trees grew in a compact enclave, as they do under natural conditions. In parallel, the actual evaporation values from the free water surface were measured directly with the EWP 992 evaporometer, and the daily indicator evaporation values were calculated using the FAO Penman-Monteith formula. In the next step, using evaporation measurements from the EWP 992 evaporometer and determined with the FAO Penman-Monteith formula, decadal and monthly empirical coefficients were determined to estimate the evapotranspiration of Scots pine. Evaluation of the weather conditions in the individual years of the experiment was also carried out, relating it to the normative multi-year period 1981–2010.

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Section: Introductionmentioning

confidence: 99%

Estimation of evapotranspiration empirical coefficients of scots pine (Pinus sylvestris) under climate change conditions

Żyromski

Wdowikowski

Kaźmierczak

2023

22nd International Scientific Conference Engineering for Rural Development Proceedings

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“…Afforestation with species of these two genera is scattered throughout the country, and there is great concern about the adverse effects these species can cause to the environment, notably in terms of water. In recent years, numerous studies have been carried out to evaluate the hydrological processes associated with different eucalyptus and pine species in very varied silvicultural and environmental conditions (TREVISAN et al, 2012;CALDATO;SCHUMACHER, 2013;SOUZA et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

PARTITIONING OF RAINFALL IN EXPERIMENTAL PLANTATIONS OF Eucalyptus urophylla AND Pinus elliottii

Arcova

Ranzini

Cicco

2018

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In a period of 36 months, the partitioning of rainfall was studied in plantations of 30-year-old Eucalyptus urophylla and Pinus elliottii cultivated in flat drainage lysimeters. Gross precipitation was measured with one rain gauge installed in an open area located near the plantations; throughfall was determined by the arithmetic mean of five rain gauges located under the canopy of each species; stemflow was obtained with polyurethane foam collars connected to plastic containers installed on four trees of each species. The mean proportions of throughfall, stemflow and interception in relation to gross rainfall for eucalyptus were 89.0%, 5.4% and 5.6%, respectively, and for pine, they were 79.8%, 1.0 % and 19.2%, respectively. The interannual variation in the percentages of interception for the two species had an amplitude of approximately 6%. There was marked variation in the proportion of stemflow depending on the season for eucalyptus, averaging 8.7% between April and September and 4.6% from October to March. There was a large number of events with negative interception for eucalyptus. One of the likely causes of the negative interception was capture of fog water by the canopy. Linear regressions estimated that rainfall amounts were responsible for approximately 99% and 70% of the variation in throughfall and stemflow, respectively, in the two plantations. Keywords: Interception, throughfall, stemflow, non-native forestry species. ResumoParticipação da chuva em plantios experimentais de Eucalyptus urophylla e de Pinus elliottii. Num período de 36 meses, a partição da chuva foi estudada em plantios experimentais de Eucalyptus urophylla e de Pinus elliottii com 30 anos de idade cultivados em lisímetros de drenagem planos. A precipitação pluviométrica foi medida com um pluviômetro instalado em área aberta. A transprecipitação foi determinada pela média aritmética de cinco pluviômetros alocados sob o dossel de cada espécie. O escoamento pelo tronco foi obtido com colares de espuma de poliuretano conectados a galões plásticos instalados em quatro árvores de cada plantio. A proporção média da transprecipitação, do escoamento pelo tronco e da interceptação em relação à precipitação pluviométrica para o eucalipto foi de 89,0%, 5,4% e 5,6% e para o pínus de 79,8%, 1,0% e 19,2%, respectivamente. A variação interanual dos percentuais da interceptação para as duas espécies teve amplitude em torno de seis pontos. Foi observada marcante variação na proporção de escoamento pelo tronco em função da época do ano para o eucalipto, com valor médio de 8,7% entre abril e setembro e de 4,6% de outubro a março. Em um grande número de eventos houve interceptação negativa no eucalipto, sendo a captação da água de nevoeiro pelas copas das árvores uma das causas. Regressões lineares estimaram que as quantidades da precipitação pluviométrica foram responsáveis por, aproximadamente, 99% e 70% da variação da transprecipitação e do escoamento pelo tronco nos dois plantios, respectivamente. Palavras-chave: Interceptação, transprecipi...

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“…Assim, devido à falta de dados físico-hídricos do solo, o monitoramento do armazenamento de água no solo teve sua estimativa cientificamente popularizada com a geração e utilização de modelos de balanços hídricos agrícolas a partir da utilização de séries históricas de dados climáticos. O mais conhecido e citado modelo para a estimativa do armazenamento de água no solo em balanços hídricos para finalidade agrícola foi descrito por Thornthwaite & Mather (1955), o qual tem sido utilizado e adaptado por diversos autores ao longo do tempo (Andrade Junior et al, 2006;Leivas et al, 2006;Souza et al, 2006;Bruno et al, 2007;Souza & Gomes, 2007;Sparovek et al, 2007;Souza Filho & Gomes, 2008;Araujo et al, 2009;Dourado-Neto et al, 2010;Campos et al 2016;Souza et al, 2016).…”

Section: Introductionunclassified

Funções de estimativa do armazenamento de água no solo sob diferentes níveis de capacidade de água disponível

Jerszurki

Souza

Adamuchio

2018

Agraria

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RESUMO:A estimativa do armazenamento de água no solo é essencial para fins de planejamento agrícola no Brasil. Teve-se por objetivo avaliar o desempenho de cinco funções utilizadas para estimar o armazenamento de água no solo, nas simulações de um balanço hídrico diário nas localidades de Goiânia-GO e Ponta Grossa-PR, considerando diferentes níveis de capacidade de água disponível no solo. Para tanto, foram utilizados dados diários de precipitação pluviométrica, evapotranspiração de referência, coeficiente de cultivo, fração p e armazenamento inicial de água no solo, considerando-se a capacidade de água disponível variando de 20 mm a 320 mm, em intervalos de 30 mm. As funções Potenciais de Primeira e Segunda Ordem apresentaram resultados similares aos apresentados pela função Cossenoidal, considerando ou não irrigações complementares ao longo do ano para as regiões estudadas. A função Exponencial não foi adequada para a estimativa do armazenamento. A função de Braga não foi adequada para as análises que consideraram a realização de irrigações complementares. Recomendase o aprimoramento das funções de estimativa do armazenamento de água a partir da substituição do "negativo acumulado" por variáveis capazes de representar a variação do armazenamento de água disponível para as plantas. Palavras-chave: modelagem; relações hídricas; simulaçãoSoil water storage functions under different levels of total available water ABSTRACT: The estimative of soil water storage is essential for representation of soil water relations for Brazil agricultural planning purposes. We had to aim evaluate the performance of five equations used to estimate soil water storage, through simulations of a daily water balance to the cities of Goiânia-GO and Ponta Grossa-PR, considering different amounts of total available water in the soil. For that purpose, were used daily data series of precipitation, reference evapotranspiration, crop coefficient, p fraction and initial soil water storage. It was considered total available water from 20 mm to 320 mm, with an interval of 30 mm. Potential functions of First and Second Order were approximately equal to the Cosine function in a daily water balance simulations, under conditions of supplementary irrigation and non-irrigation over the year. The Exponential function was not adequate in the estimative of soil water storage. Braga function was not adequate when considering additional irrigations in a daily water balance. We recommend the improvement of the functions to estimate soil water storage from replacement of "negative cumulative" function by other parameters, which could better explain the variation of soil water storage available for plants.Funções de estimativa do armazenamento de água no solo sob diferentes níveis de capacidade de água disponível Rev. Bras.

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<b>Soil water balance in different densities of <i>Pinus taeda</i> in Southern Brazil

Cited by 5 publications

References 17 publications

Estimation of evapotranspiration empirical coefficients of scots pine (Pinus sylvestris) under climate change conditions

Estimation of evapotranspiration empirical coefficients of scots pine (Pinus sylvestris) under climate change conditions

PARTITIONING OF RAINFALL IN EXPERIMENTAL PLANTATIONS OF Eucalyptus urophylla AND Pinus elliottii

Funções de estimativa do armazenamento de água no solo sob diferentes níveis de capacidade de água disponível

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