Ciclagem de nutrientes via precipitação pluvial total, interna e escoamento pelo tronco em sistema agroflorestal com Gliricidia sepium

Pérez-Marin, Aldrin Martin; Menezes, Rômulo Simões Cézar

doi:10.1590/s0100-06832008000600034

Cited by 11 publications

(5 citation statements)

References 14 publications

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“…33 Thus, the physical impact of raindrops was attenuated, and the stability of aggregates was maintained, which reduced the amount of transported materials and the soil nutrient losses under the canopy, especially of minerals with low mobility in the soil, including P, whose primary loss process is leaching. 34 Furthermore, the increased nutrient concentrations may have resulted from the decomposition of leaves accumulated under the canopy, exudation from roots or from stemflow, which is the transport of leaf and trunk nutrients, especially K + , by rainwater, 1,35,36 therefore, the nutrients remain concentrated near the trunk base. 2 Cordia oncocalyx trees showed differences in the nutrient concentrations of sun leaves between the rainy months (RM) and 50 dar (Figure 1).…”

Section: Resultsmentioning

confidence: 99%

Nutrient input and output in an agro forestry system in a semiarid region of Brazil

Mendes,

de Lacerda,

Fernandes

et al. 2019

FREIJ

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Alternatives to traditional agricultural farming practices that combine production and environmental conservation, such as agroforestry systems, are currently being studied. This study aimed to quantify the contribution of trees to nutrient input and output in crops grown in an agrosilvopastoral system in the municipality of Sobral, Ceará State, Brazil. Nutrient concentrations were quantified in shade and sun leaves of Cordia oncocalyx Allemão (called pau-branco) trees in the rainy and dry seasons and in maize leaves at the time of harvest. Nutrient concentrations in different soil layers (0-10, 10-20 and 20-40cm) were also quantified at 0.4 and 4.0 m from the trunk of C. oncocalyx trees. The contribution of the trees to the nutrient input to the system and nutrient output due to the removal of maize plants were also assessed. The soil under the canopy of C. oncocalyx showed the highest concentrations of total N, K, P, Fe, Cu, Zn and Mn. However, few differences were noted in the concentrations of maize leaf nutrients as a function of the distance from the trunk. The trees may contribute up to 35kg ha-1 Ca, 19kg ha-1 N and 15kg ha-1 K, whereas approximately 2.3kg N, 5.6kg K and 0.2kg Ca leave the system with the removal of maize plant shoots. Therefore, maintaining trees in production systems significantly contributes to replenishing the nutrients lost from harvesting crops.

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Section: Resultsmentioning

confidence: 99%

Nutrient input and output in an agro forestry system in a semiarid region of Brazil

Mendes,

de Lacerda,

Fernandes

et al. 2019

FREIJ

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“…Similarly to the results obtained in the present study, the mentioned authors observed a comparable value for RF events over 50 mm (41% of accumulated depth), indicating that, although less frequent, these events have great influence on the water balance in forest ecosystems, regardless of the region where they are located. Albuquerque and Costa (2012) highlight that events with small RF depths are also important for the forest water balance, mainly for the plant-soil system, since they regulate the water flow to the soil and to the root system, with different volumes and compositions among the hydrological processes (PEREZ-MARIN;MENEZES, 2008). Considering that rainfall events in the region are characterized by small depths, it is expected that TF in the studied region presents high spatial variability due to the incomplete saturation of the forest canopy in this type of event.…”

Section: Discussionmentioning

confidence: 99%

Relationships between rainfall and throughfall in a secondary forest in southeastern Brazil: an evaluation of different statistical models

Lima

Bourscheidt

Tanaka

2018

RBRH

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Throughfall (TF) is influenced by different meteorological conditions, which can result in high spatial and temporal variability, when interacting with vegetation and mutually with each other. This study aimed to evaluate rainfall (RF) influence on TF, as well as to describe the behavior of these variables in an area dominated by Pinus elliottii in southeastern Brazil, by exploring different statistical models proposed in the literature. For this, RF and TF data were recorded in 24 rainfall events by 180 gauges distributed in six 10 x 10 m plots. The results indicate a significant influence of RF volume on response variables [TF volume (TF mm ), TF fraction (TF % ) and coefficient of variation of TF (CV TF )]. While the linear model presented the best fit for TF mm , the non-linear models had better results for TF % and CV TF as a function of RF, allowing the identification of distinct behaviors for different RF volumes. In general, it was verified that RF is the main source of variability in TF estimates in the study area. However, it should be noted that other variables may be acting simultaneously on TF % and CV TF , in which 45.4 and 38.1% of the variation, respectively, remain unexplained, requiring complementary studies to identify and quantify the influence of other factors.Keywords: Throughfall; Forest hydrology; Modelling; Spatial variability. RESUMOA precipitação interna (PI) é influenciada por diferentes condições meteorológicas, que, ao interagirem entre si e com a vegetação, podem resultar em elevada variabilidade espacial e temporal. Este estudo teve como objetivo avaliar a influência da precipitação em aberto (PA) sobre a PI, assim como descrever o comportamento dessas variáveis em uma área de vegetação com predominância de Pinus elliottii no sudeste brasileiro, explorando diferentes modelos estatísticos propostos na literatura. Para isto, foram registrados dados de PA e PI em 24 eventos de chuva por 180 pluviômetros distribuídos em seis parcelas de 10 x 10 m. Os resultados indicam influência significativa do volume de PA sobre as variáveis resposta [volume de PI (PI mm ), fração de PI (PI % ) e coeficiente de variação da PI (CV PI )]. Enquanto o modelo linear apresentou o melhor ajuste para PI mm , os modelos não-lineares tiveram melhores ajustes para PI % e CV PI em função de PA, permitindo identificar comportamentos distintos para diferentes volumes de chuva. De forma geral, verificou-se que a PA é a principal fonte de variação nas estimativas de PI na área de estudo. No entanto, destaca-se que outras variáveis podem estar atuando simultaneamente sobre a PI % e CV PI , nas quais 45,4 e 38,1%, respectivamente, da variação permanecem inexplicados, demandando estudos complementares para identificar e quantificar a influência de outros fatores. Relationships between rainfall and throughfall in a secondary forest in southeastern Brazil: an evaluation of different statistical models 2/14 Palavras

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“…Perez-Marin e Menezes (2008) puderam deduzir que, devido a interceptação de uma quantidade significativa de água pelas copas, há menos escoamento superficial e menor suprimento de água para o lençol freático. Porém, estes mecanismos levam a uma menor perda do solo, nutrientes e água por lixiviação, erosão e escoamento subsuperficial.…”

Section: Mata Atlântica E O Ciclo Hidrológicounclassified

Implantação De Um Consórcio Florestal Em Pequenas Propriedades No Sul Do Espírito Santo: Um Caminho Para O Zoneamento Ambiental

Neves¹,

Gonçalves²,

Caldeira³

et al. 2020

A Produção Do Conhecimento Na Engenharia Florestal

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Direitos para esta edição cedidos à Atena Editora pelos autores. Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição-Não-Comercial-NãoDerivativos 4.0 Internacional (CC BY-NC-ND 4.0).O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores, inclusive não representam necessariamente a posição oficial da Atena Editora. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais.A Atena Editora não se responsabiliza por eventuais mudanças ocorridas nos endereços convencionais ou eletrônicos citados nesta obra.Todos os manuscritos foram previamente submetidos à avaliação cega pelos pares, membros do Conselho Editorial desta Editora, tendo sido aprovados para a publicação.

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Ciclagem de nutrientes via precipitação pluvial total, interna e escoamento pelo tronco em sistema agroflorestal com Gliricidia sepium

Cited by 11 publications

References 14 publications

Nutrient input and output in an agro forestry system in a semiarid region of Brazil

Nutrient input and output in an agro forestry system in a semiarid region of Brazil

Relationships between rainfall and throughfall in a secondary forest in southeastern Brazil: an evaluation of different statistical models

Implantação De Um Consórcio Florestal Em Pequenas Propriedades No Sul Do Espírito Santo: Um Caminho Para O Zoneamento Ambiental

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