João Batista Dias de Paiva

• Dr.
• Professor (Full) at Federal University of Santa Maria

Six plots (three as controls) were established in southern Brazil to assess the reduction in runoff by vertical mulching (vm). In the other three, ditches (0.08-m wide, 0.4-m deep) were cut perpendicular to the slope, 2-m and 12-m upslope from the bottom of the plot where a flume was installed to measure runoff. Three simulated rainfalls (80 mm h−1...

This study aimed to quantify the water balance components at a grassland and a forest site representative of the Atlantic Forest biome in southern Brazil using drainage lysimeters. Since it was not possible to place mature trees on the forest lysimeter, it was planted with young trees and understory vegetation. Data from this lysimeter and computat...

The sediment production has been the focus of many studies due to the problems caused by the alterations of the natural environment which are driven by the urbanization process. In Santa Maria, Brazil, the urban area expansion and population growth have caused changes in the environment, such as in the structure and natural form of the land, in dra...

Rainfall interception by vegetation (I) can affect the hydrological behavior of a watershed, influencing the hydrological modeling processes. The limitations of monitoring and the wide variety of Brazilian climate and vegetation make it difficult to estimate the interception process. Therefore interception is often overlooked or underestimated in h...

A representação detalhada dos processos hidrológicos envolvidos no balanço hídrico tem adquirido grande importância para uma gestão eficiente dos recursos hídricos e melhor compreensão do ciclo hidrológico. Para tanto, é necessário à utilização de técnicas que permitam o controle das variáveis envolvidas e representem mais fielmente possível o ambi...

The objective of this study was to monitor the behavior and spatial variability of soil water content under native pasture and forest vegetation while considering the influence of different seasons and different depths in an area of Atlantic forest in southern Brazil. To obtain the soil water content, electronic tensiometers with pressure transduce...

Este trabalho teve como objetivo simular a dinâmica da água no solo, por meio do software HYDRUS-1D, para as condições climáticas características da região sul do Brasil, comparando os resultados simulados com resultados obtidos em medições de campo. O monitoramento do conteúdo de água no solo foi realizado por meio de tensiômetros eletrônicos com...

The objetive of this work was monitoring of the soil water content behavior, for grass native field and native forest vegetation cover, in an area characteristic of Atlantic Forest in Southern Brazil. To obtain the soil water content, some electronics tensiometers with pressure transducer were utilized and were placed 0.10, 0.30 and 0.70 m below th...

Simulating the hydrologic response of a watershed for different scenarios is an important tool for assessing the rational use of the land and natural resources, especially in environments where urbanization is not ever an organized procedure. This study used the Kineros2 event oriented hydrological model to simulate the runoff response of a 4.9 km²...

The Ibicuí basin, located in the south of Brazil, is close to 50,000 km2 in drainage area. The basin has big problems with water deficits, attributed to the indiscriminate use of water to irrigate rice. The objective of this study is a statistical analysis of water flow data in the Ibicuí basin to verify if there are significant trends in water ava...

This study aims at monitoring the behaviour of the rainfall, runoff, drainage, soil water storage, and evapotranspiration variables involved in the water balance measured by lysimeter data. The evaluation of the water balance considered different time scales, where the components were monitored daily and in 10-day accumulated period intervals. The...

O presente trabalho apresenta os procedimentos de instalação e reparos de um lisímetro volumétrico, além da avaliação do funcionamento do mesmo na determinação do balanço hídrico, sob as condições climáticas da depressão central do estado do Rio Grande do Sul. As variáveis controladas junto ao lisímetro foram a precipitação, o escoamento superficia...