Estabilidade temporal do conteúdo de água em três condições de uso do solo, em uma bacia hidrográfica da região da Serra da Mantiqueira, MG

Ávila, Léo Fernandes; Mello, Carlos Rogério de; Silva, Antônio Marciano da

doi:10.1590/s0100-06832010000600024

Cited by 11 publications

(10 citation statements)

References 23 publications

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“…For analysis of temporal stability, 1926 soil moisture readings were used on non‐parametric statistical techniques: Spearman non‐parametric test and average relative difference from soil moisture of each point i to the average soil moisture in each j measurement data, both following a detailed methodology described by Ávila et al (2010).…”

Section: Methodsmentioning

confidence: 99%

Moisture Temporal Stability of a Typic Hapludox under Different Uses and Depths

et al. 2019

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Temporal stability shows that specific within‐field locations can represent average moisture values for a period of time, reducing efforts of collecting and measurement field observations. The objective of this study was to analyze the temporal stability of soil moisture within a Hapludox, typical of Cerrado, a unique Brazilian biome (similar to savanna), located in the southwestern state of Goiás. Instant readings of volumetric soil moisture were done biweekly from November 2013to February 2014, using a portable TDRSensor with rods of 0.12 m in length, at 0‐ to 0.12‐, from 0.12‐ to 0.24‐, and 0.24‐ to 0.36‐m soil depths. The TDR sensor data were corrected and calibrated by volumetric water content data obtained from gravity method and soil bulk density measurements. To quantify temporal stability, we used nonparametric methods: Spearman correlation coefficient, average relative difference, and temporal stability index. Temporal stability on the field scale differed between the three sites/systems. Average soil moisture can be accurately estimated at only one georeferenced point for each site/management system, reducing measurement effort in long‐term studies. Core Ideas Moisture temporal stability reduce cost of field measurements. It is essential to planning monitoring programs of hydrology and irrigation. Represent a valuable support for future researches related to soil water management.

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Section: Methodsmentioning

confidence: 99%

Moisture Temporal Stability of a Typic Hapludox under Different Uses and Depths

et al. 2019

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“…The LCW has been a scientific laboratory, with other studies ); and the water table depth (m) (e, f), on December 31, 2008 (Menezes et al, 2009). that involved soils, climate, water table monitoring, water quality and sediment transport, groundwater recharge, and water balance (Junqueira Júnior et al, 2008;Menezes et al, 2009;Ávila et al, 2010;Mello et al, 2012;Oliveira et al, 2014;Menezes et al, 2014;Pinto et al, 2015). This served as a background for conducting DHSVM calibration, allowing comparisons between a soil map and a moisture zone map as inputs for the model.…”

Section: Dhsvm Calibration Based On Soil and Moisture Zone Mapsmentioning

confidence: 99%

“…Several studies have shown that watershed water balance can be affected by different factors, such as climate, geology, hydrography, topography, and soil and vegetation types (Ávila et al, 2010;Price, 2011;Pereira et al, 2014). One of the main challenges of distributed hydrological models is to simulate the complex interactions that exist in the landscape, highlighting the relationships among geomorphological and hydrological soil and vegetation attributes with infiltration and rainfall-runoff processes.…”

Section: Introductionmentioning

confidence: 99%

Performance of a Distributed Hydrological Model Based on Soil and Moisture Zone Maps

Alvarenga

Mello

Colombo

et al. 2017

Rev. Bras. Ciênc. Solo

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ABSTRACT:The scarcity of field data to develop soil maps through a pedological survey is one of the main limitations to using distributed hydrological models, especially in small and medium-sized watersheds. The aim of this study was to compare a distributed hydrological model prediction to a soil map based on a pedological survey and a moisture zone map obtained using the Height Above the Nearest Drainage -HAND model. The Distributed Hydrology Soil Vegetation Model -DHSVM, which is a physically-based and distributed hydrological model, was applied to a mountainous watershed, located in the region of the Mantiqueira Range in the south of Minas Gerais in southeastern Brazil, and was compared to both maps mentioned above, taking the soil map developed by the pedological survey as a reference. Daily weather and streamflow data-sets were used for DHSVM calibration and validation using the two different maps (soil and moisture zone maps) as inputs. In both simulations, the DHSVM performed well, with outputs indicating a good relationship between topographical and hydrological characteristics from the two types of maps. Thus, the moisture zone map obtained by the HAND model can also be successfully used in distributed hydrological modeling, especially for mountainous regions in southeastern Brazil.

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“…O movimento da água no solo é muito heterogêneo e depende da ação de diversos fatores relacionados ao clima, solo, topografia e vegetação, resultando em uma alta variabilidade espacial e temporal (ÁVILA; SILVA, 2010;ZUCCO et al, 2014). O conhecimento da variabilidade da θ é importante para o manejo racional da água e a maximização da produtividade (MOREIRA et al, 2014;PENG;MU;SUN, 2017).…”

Section: Introductionunclassified

Estabilidade Temporal E Variabilidade Espacial Da Umidade De Um Argissolo Cultivado Com Palma Forrageira

Carvalho

Silva

Queiroz

et al. 2017

RBAI

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RESUMOA umidade do solo é uma variável de grande importância para o manejo de água em cultivos agrícolas. O uso recente de irrigação em áreas de palma forrageira induz a necessidade de mensuração da umidade do solo para auxílio da tomada de decisão de quando e quanto irrigar. Logo, a estabilidade temporal e a variabilidade espacial da umidade do solo em um argissolo vermelho amarelo cultivado com palma forrageira foram avaliadas neste estudo. A pesquisa foi conduzida em Serra Talhada, PE, em um cultivo de palma forrageira com dimensões de 76 x 32 m e declividade diagonal de 0,6%, onde medidas da umidade no perfil do solo foram efetuadas em 60 posições (pontos amostrais equidistantes em 7 m), a cada 0,10 m, em seis camadas, até a profundidade de 0,60 m e em intervalos de três dias durante 41 dias. Estatística descritiva, diferença relativa da posição, matriz de correlação de Spearman e geoestatística foram aplicadas. A umidade ao longo do perfil do solo demonstrou dispersão mediana (10-20%), mesmo depois da realização de irrigação ou ocorrência de eventos de chuva. A técnica da diferença relativa da posição mostrou que a dispersão espacial da umidade do solo dependeu da camada. A matriz de correlação de Spearman detectou estabilidade temporal da umidade em todas as camadas analisadas, porém mais intensa nas maiores profundidades. A geoestatística revelou dependência entre a umidade do solo cultivado com palma e a cota da posição de medição, e estreita relação aos pontos com maior estabilidade temporal.Palavras-chave: geoestatística, irrigação, Opuntia stricta (Haw.) Haw., Semiárido

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Estabilidade temporal do conteúdo de água em três condições de uso do solo, em uma bacia hidrográfica da região da Serra da Mantiqueira, MG

Cited by 11 publications

References 23 publications

Moisture Temporal Stability of a Typic Hapludox under Different Uses and Depths

Moisture Temporal Stability of a Typic Hapludox under Different Uses and Depths

Performance of a Distributed Hydrological Model Based on Soil and Moisture Zone Maps

Estabilidade Temporal E Variabilidade Espacial Da Umidade De Um Argissolo Cultivado Com Palma Forrageira

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