Effects of rainfall intensity, underlying surface and slope gradient on soil infiltration under simulated rainfall experiments

Huang, Jun; Wu, Pute; Zhao, Xining

doi:10.1016/j.catena.2012.10.013

Cited by 169 publications

(95 citation statements)

References 67 publications

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“…For a small-scale artificial rainfall experiment, the experimental plot is usually less than 5 m 2 with the length, width and depth of the soil box at 1-2 m, 0.5-1 m and 0.22-0.5 m, respectively [37]. In our experiments, three identical steel soil boxes, each 1.0 × 0.6 × 0.25 m and with two wheels at the The 20 cm of topsoil was selected as soil samples to eliminate the spatial heterogeneity of physical and chemical properties for various soil samples.…”

Section: Experimental Devicesmentioning

confidence: 99%

“…It can be explained that as rainfall intensity increases, more raindrops fall on a slope over a certain duration and soil water content increases rapidly. On the other hand, heavy rainfall causes broken soil particles to fill the gap and form water film, which causes the infiltration capacity of the runoff to decrease [37]. Those factors generated rapid runoff even before rainfall infiltrated thoroughly into deep soil, which caused the initial runoff-yielding time to be short.…”

Section: Effects Of Rainfall Intensity On the Initial Runoff-yieldingmentioning

confidence: 99%

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Influence Mechanisms of Rainfall and Terrain Characteristics on Total Nitrogen Losses from Regosol

Ding

Xue

et al. 2017

Water

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Abstract:The upper reach of the Yangtze River is an ecologically sensitive region where water loss, soil erosion, and nonpoint source (NPS) pollution are serious issues. In this drainage area, regosol is the most widely distributed soil type. Cultivation on regosol is extensive and total nitrogen (TN) has become a common NPS pollutant. Artificial rainfall experiments were conducted to reveal the influence mechanisms of rainfall and terrain on TN losses from regosol. The results showed that there were positive correlations between precipitations and TN loads but negative ones between precipitations and TN concentrations. Furthermore, negative correlations were more obvious on fields with slopes of 5 • and 25 • than on other slopes. With increasing rainfall intensity, TN loads rose simultaneously. However, TN concentration in runoff-yielding time presented a decline over time. As far as terrain was concerned, TN loads grew generally but not limitlessly when slopes increased. Similarly, TN concentrations also rose with rising slopes; upward trends were more obvious for steeper slopes. Furthermore, the initial runoff-yielding time became longer for steeper slopes and the differences under various rainfall intensity conditions diminished gradually.

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Section: Experimental Devicesmentioning

confidence: 99%

Section: Effects Of Rainfall Intensity On the Initial Runoff-yieldingmentioning

confidence: 99%

Influence Mechanisms of Rainfall and Terrain Characteristics on Total Nitrogen Losses from Regosol

Ding

Xue

et al. 2017

Water

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“…A cultivar de soja utilizada foi a 'SYN9074 RR', e a adubação de plantio consistiu de 300 kg ha , valor adotado em estudos desta natureza (Panachuki et al, 2011;Huang et al, 2013). A parcela-teste que recebeu a precipitação apresenta área útil de 0,70 m 2 , e é delimitada por chapas de aço galvanizado.…”

Section: Methodsunclassified

Erosão hídrica em diferentes sistemas de cultivo e níveis de cobertura do solo

Almeida

Carvalho

Panachuki

et al. 2016

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar, sob chuva simulada, o efeito da cobertura vegetal sobre a erosão de um Argissolo Vermelho, no Estado de Mato Grosso do Sul, nos seguintes sistemas de cultivo: soja, com preparo convencional; soja, em plantio direto; pastagem estabelecida, sem pisoteio animal; e condição de solo exposto, como padrão de comparação. A cada 20 dias, foram tiradas fotografias digitais para a estimativa da cobertura do solo, e chuvas simuladas de 60 mm h -1 foram aplicadas às parcelas experimentais, com uso do simulador portátil de chuvas. As perdas de solo, quantificadas a cada 2 min, variaram de 3,10 a 11,40 Mg ha , no cultivo de soja sob plantio direto. As perdas de solo diminuíram com o aumento da cobertura vegetal. Na pastagem, a máxima cobertura foi de 98,10%. Os efeitos benéficos do preparo convencional são temporários, o que torna o solo mais suscetível à erosão do que os sistemas conservacionistas.Termos para indexação: Glycine max, Urochloa ruziziensis, perda de solo e água, chuva simulada. Hydraulic erosion in different tillage systems and soil coverAbstract -The objective of this work was to evaluate, under simulated rainfall, the effect of soil cover on the erosion of a Typic Hapludalf erosion, in the state of Mato Grosso do Sul, Brazil, in the following crop systems: soybean, under conventional tillage; soybean, under no-tillage; established pasture, without cattle trampling; and exposed soil, as a comparison standard. Digital photographs were taken every 20 days for soil cover estimate, and 60 mm h -1 simulated rainfall was applied on the experimental plots, using a portable sprinkler infiltrometer. Soil losses, quantified every 2 min, ranged from 3.10 to 11.40 Mg ha -1 , in exposed soil, and from 0.03 to 0.19 Mg ha -1 , in established pasture; water losses ranged from 300 to 555 m 3 ha -1 , in exposed soil, and from 63 to 229 m 3 ha -1 , in soybean cultivation under no-tillage. Soil losses decreased with the increase in vegetation cover. In the pasture, the maximum vegetation cover was 98.10%. Conventional tillage has temporary positive effects, which makes the soil more susceptible to erosion than the conservationist systems.

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“…Water 2017, 9, 315 3 of 13 of the width is 0.5-1 m and the range of the depth is 0.22-0.5 m [32]. Hence, the size of the soil box in this study was designed as 1.0 × 0.6 × 0.25 m 3 ( Figure 1).…”

Section: Experimental Devicesmentioning

confidence: 99%

Effects of Precipitation and Topography on Total Phosphorus Loss from Purple Soil

Ding

Xue

et al. 2017

Water

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Abstract:The Sichuan Basin is the main agricultural production area of the upper reaches of the Yangtze River and is also an extremely important ecological area because it is rich in biodiversity and has complex and diverse landscape types. The dominant soil type, purple soil, is prone to rapid soil erosion and weathering processes because it is shallow and rich in phosphorus and other nutrients. Field experiments were conducted to reveal the effects of precipitation and topography characteristics on nonpoint source pollutants from purple soil. The results showed that total phosphorus (TP) load and TP concentration both increased with increasing rainfall amount, and there was an initial time of runoff and sediment yield before runoff generation. Moreover, the TP load generally increased with precipitation intensity as setting a coincident value of rainfall amount; however, the difference between TP load at 30 and 60 mm/h was minimal as was the difference between 90 and 120 mm/h. Similarly, TP concentration increased with increasing precipitation intensity. In terms of topographical conditions, TP load increased with increasing gradient, but began to decline when the gradient was about 20 • , which indicates that 20 • is the critical gradient for TP loss. There was a significant positive correlation between gradient and TP concentration when the gradient was <15 • , whereas the increase in TP concentration slowed as the gradient increased.

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Effects of rainfall intensity, underlying surface and slope gradient on soil infiltration under simulated rainfall experiments

Cited by 169 publications

References 67 publications

Influence Mechanisms of Rainfall and Terrain Characteristics on Total Nitrogen Losses from Regosol

Influence Mechanisms of Rainfall and Terrain Characteristics on Total Nitrogen Losses from Regosol

Erosão hídrica em diferentes sistemas de cultivo e níveis de cobertura do solo

Effects of Precipitation and Topography on Total Phosphorus Loss from Purple Soil

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