Runoff and soil erosion plot-scale studies under natural rainfall: A meta-analysis of the Brazilian experience

Anache, Jamil Alexandre Ayach; Wendland, Edson; Oliveira, Paulo Tarso Sanches de; Flanagan, D. C.; Nearing, M. A.

doi:10.1016/j.catena.2017.01.003

Cited by 157 publications

(105 citation statements)

References 87 publications

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“…The runoff quantity was higher in DE plot followed by rainfed agriculture and tea plantation. Further, Anache et al () have performed plot‐scale studies in 52 plots under different land use conditions and indicated the less runoff generating potential of forest land in comparison with grass and pasture land and fallow land. The soil moisture was observed higher in AF plot in comparison with DE plot, which simultaneously verified the concept that the north aspect of catchment carries more moisture than the south aspect (Corrao et al, ; Geroy et al, ).…”

Section: Discussionmentioning

confidence: 99%

Understanding plot‐scale hydrology of Lesser Himalayan watershed—A field study and HYDRUS‐2D modelling approach

Nanda

Sen

Jirwan

et al. 2018

Hydrological Processes

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Soil moisture dynamics have a significant effect on overland flow generation. Catchment aspect is one of the major controlling factors of overland flow and soil moisture behaviour. A few experimental studies have been carried out in the uneven topography of the Himalayas. This study presents plot‐scale experiments using portable rainfall simulator at an altitude of 1,230 m above mean sea level and modelling of overland flow using observed datasets. Two plots were selected in 2 different aspects of Aglar watershed of Lesser Himalaya; the agro‐forested (AF) plot was positioned at the north aspect whereas the degraded (DE) plot was located at the south aspect of the hillslope. HS flumes and rain gauges were installed to measure the runoff at the outlet of the plot and the rainfall depth during rainfall simulation experiments. Moreover, 10 soil moisture sensors were installed at upslope and downslope locations of both the plots at 5, 15, 25, 35, and 45 cm depth from ground level to capture the soil moisture dynamics. The tests were conducted at intensities of 79.8 and 75 mm/hr in AF plot and 82.2 and 72 mm/hr in the DE plot during Test 1 and Test 2, respectively. The observed data indicate the presence of reinfiltration process only in the AF plot. The high water holding capacity and the presence of reinfiltration process results in less runoff volume in the AF plot compared with the DE plot. The Hortonian overland flow mechanism was found to be the dominant overland flow mechanism as only a few layers of top soil get saturated during all of the rainfall–runoff experiments. The runoff, rainfall, and soil moisture data were subsequently used to calibrate the parameters of HYDRUS‐2D overland flow module to simulate the runoff hydrograph and soil moisture. The components of hydrograph were evaluated in terms of peak discharge, runoff volume and time of concentration, the results were found to be within the satisfactory range. The goodness of fit of simulated hydrographs were more than 0.85 and 0.95 for AF and DE plot, respectively. The model produced satisfactory simulation results of soil moisture for all of the rainfall–runoff experiments. The HYDRUS‐2D overland flow module was found promising to simulate the runoff hydrograph and soil moisture in plot‐scale research.

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Section: Discussionmentioning

confidence: 99%

Understanding plot‐scale hydrology of Lesser Himalayan watershed—A field study and HYDRUS‐2D modelling approach

Nanda

Sen

Jirwan

et al. 2018

Hydrological Processes

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“…Studies related to water erosion in field experiments in Brazil were analyzed by Anache et al (2017) that identified 52 study sites; approximately 50 % of the published studies had a duration less than or equal to two years, and only three included series with a period greater than or equal to 20 years. The authors also claim that the observed values are influenced by the length of data collection, and they emphasize the importance of data obtained in long-term experiments in order to develop models and support decision making.…”

Section: Introductionmentioning

confidence: 99%

Water Erosion in a Long-Term Soil Management Experiment with a Humic Cambisol

Schick

Bertol

Barbosa

et al. 2017

Rev. Bras. Ciênc. Solo

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Water erosion, the main factor in soil degradation, is strongly influenced by soil cover and management. The objective of this study was to determine soil and water losses under natural rainfall conditions from 1993 to 2012 in the southern Santa Catarina Plateau, Brazil, in 3.5 × 22.1 m plots with crops in rotation to study the following management treatments: conventional tillage (CT), minimum tillage (MT), and no-tillage (NT), and a treatment with bare soil (BS). The soil cover remaining after tillage was negatively affected by the increase in soil tillage intensity. Soil losses were strongly affected by the management system, while water losses were less affected. Soil losses were 85.29, 6.41, 2.00, and 0.82 Mg ha -1 yr -1 in the BS, CT, MT, and NT treatments, respectively, while water losses were 38, 24, 15, and 9 % of the rainfall, respectively, in the annual mean. Soil losses in spring/summer were similar to those of autumn/winter in the CT, MT, and NT treatments, while water losses were influenced by the time of year in all soil management systems. The accumulated soil losses in the MT and NT treatments tended to stabilize over the period evaluated, whereas they increased an average of 88.12 Mg ha -1 yr -1 in the BS and 7.23 Mg ha -1 yr -1 in the CT treatments. The accumulated water losses had a linear response, with positive angular coefficients for all treatments. The relationship between annual soil and water loss data was significant in the BS treatment; in the CT, MT, and NT treatments, this relation was not significant.

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“…Estima-se que o Brasil tenha aproximadamente 3525 anos de operação (ano-parcela) em parcelas experimentais sob chuva natural somando-se a duração de todos os estudos e suas repetições e tratamentos (Anache et al, 2017). Esse número é similar a países como a China (2823 anos-parcela) (Guo et al, 2015) e Alemanha (1076 anos-parcela) (Auerswald et al, 2009).…”

Section: Distribuição Espacial Dos Estudosunclassified

“…Os valores médios anuais de erosão do solo variam entre 0,1 t ha -1 ano -1 (pastagem na região Sul) a 136 t ha -1 ano -1 (solo exposto na região Nordeste). Como as taxas de escoamento superficial e perda de solo tendem a variar ao longo do tempo (Nearing et al, 1999), maior peso foi atribuído a maiores períodos de observação utilizando o teorema do limite central nos estudos resumidos pela Tabela 6 (Cerdan et al, 2010;Guo et al, 2015;Anache et al, 2017).…”

Section: Escoamento Superficial E Erosão Do Solounclassified

“…Nesse uso do solo, é possível a ocorrência de reduções na porosidade, no carbono orgânico e no diâmetro médio dos agregados do solo, bem como, o aumento na densidade do solo (Valim et al, 2016). O elevado escoamento superficial na pastagem em relação à cana-de-açúcar e ao Cerrado sensu stricto pôde ser explicado pela baixa porosidade e alta densidade do solo em sua camada superficial em decorrência do pastoreio de animais no local (Aderfer e Robinson, 1947;Haveren, 1983 (Montgomery, 2007;Auerswald et al, 2009;Guo et al, 2015;Anache et al, 2017).…”

Section: 1 Simulação Com Dados Climáticos Históricosunclassified

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Alterações no ciclo hidrológico e na perda de solo devido aos diferentes usos do solo e variações climáticas em área de Cerrado

Anache¹

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Runoff and soil erosion plot-scale studies under natural rainfall: A meta-analysis of the Brazilian experience

Cited by 157 publications

References 87 publications

Understanding plot‐scale hydrology of Lesser Himalayan watershed—A field study and HYDRUS‐2D modelling approach

Understanding plot‐scale hydrology of Lesser Himalayan watershed—A field study and HYDRUS‐2D modelling approach

Water Erosion in a Long-Term Soil Management Experiment with a Humic Cambisol

Alterações no ciclo hidrológico e na perda de solo devido aos diferentes usos do solo e variações climáticas em área de Cerrado

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