Soil roughness and overland flow

Govers, Gérard; Takken, Ingrid; Helming, Katharina

doi:10.1051/agro:2000114

Cited by 202 publications

(139 citation statements)

References 88 publications

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“…Entretanto, em alguns casos, como nos tratamentos PC-0 e PC-2, pequena elevação no valor do índice de rugosidade ao acaso foi observada após a aplicação da primeira chuva simulada. Essa tendência também foi verificada por Eltz & Norton (1997) e Govers et al (2000), atribuindo-se esse fato à consolidação do solo pelo impacto das gotas de chuva e ao rearranjamento dos torrões e agregados do solo após terem sido umedecidos. Com a aplicação das chuvas, totalizando 420 mm de lâmina de água, distribuídas em sete eventos de precipitação pluvial, a evolução dos valores do RR apresentou grande variabilidade de acordo com o tipo de preparo e nível de cobertura.…”

Section: Resultsunclassified

Rugosidade da superfície do solo sob diferentes sistemas de manejo e influenciada por chuva artificial

Panachuki

Bertol

Sobrinho

et al. 2010

Rev. Bras. Ciênc. Solo

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RESUMOA rugosidade da superfície do solo é influenciada pelo manejo, formada em especial pelo tipo de preparo e reduzida pela ação da chuva, principalmente. O objetivo deste estudo foi avaliar a influência de diferentes sistemas de manejo do solo e da aplicação de chuva artificial na rugosidade da superfície do solo. Os tratamentos estudados resultaram da combinação de três sistemas de manejo do solo, semeadura direta (SD), preparo convencional (PC) e cultivo mínimo (CM), com três doses de resíduo vegetal seco de soja (Glycine max L. Merrill): 0, 2 e 4 Mg ha -1 . Nas unidades experimentais foram aplicadas sete chuvas, com intensidade de precipitação pluvial de 60 mm h -1 e duração de 60 min cada, totalizando 420 mm de lâmina de chuva. A rugosidade foi avaliada imediatamente antes e após o preparo do solo e imediatamente após a aplicação de cada uma das sete chuvas artificiais. Obtiveram-se valores do índice de rugosidade ao acaso entre 1,88 e 5,41 mm na semeadura direta; entre 3,88 e 8,30 mm no preparo convencional; e entre 8,99 e 17,45 mm no cultivo mínimo. Concluiu-se que: as operações de preparo do solo aumentaram a rugosidade da sua superfície, em geral; o cultivo mínimo foi o sistema de preparo do solo que proporcionou os maiores valores de rugosidade ao acaso; e nos tratamentos semeadura direta com cobertura do solo a ação da chuva não promoveu decaimento do microrrelevo do solo.

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Section: Resultsunclassified

Rugosidade da superfície do solo sob diferentes sistemas de manejo e influenciada por chuva artificial

Panachuki

Bertol

Sobrinho

et al. 2010

Rev. Bras. Ciênc. Solo

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“…With the advances in research on soil erosion processes, the interest in measurement and modeling of the surface microrelief has increased, especially for use in mathematical models of soil loss using the evolution of surface water retention during rainfall events (De Roo et al, 1995;Govers et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…The soil roughness is mainly characterized by two indexes: the roughness index RR (random roughness) (Allmaras et al, 1966;Currence & Lovely, 1970) and tortuosity index T (Boiffin, 1984), both related to capacity of surface water storage in the soil (Onstad, 1984;Govers et al, 2000;Kamphorst et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Relations between soil surface roughness, tortuosity, tillage treatments, rainfall intensity and soil and water losses from a red yellow latosol

Bramorski

Maria²,

Silva

et al. 2012

Rev. Bras. Ciênc. Solo

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SUMMARYThe soil surface roughness increases water retention and infiltration, reduces the runoff volume and speed and influences soil losses by water erosion. Similarly to other parameters, soil roughness is affected by the tillage system and rainfall volume. Based on these assumptions, the main purpose of this study was to evaluate the effect of tillage treatments on soil surface roughness (RR) and tortuosity (T) and to investigate the relationship with soil and water losses in a series of simulated rainfall events. The field study was carried out at the experimental station of EMBRAPA Southeastern Cattle Research Center in São Carlos (Fazenda Canchim), in São Paulo State, Brazil. Experimental plots of 33 m² were treated with two tillage practices in three replications, consisting of: untilled (no-tillage) soil (NTS) and conventionally tilled (plowing plus double disking) soil (CTS). Three successive simulated rain tests were applied in 24 h intervals. The three tests consisted of a first rain of 30 mm/h, a second of 30 mm/h and a third rain of 70 mm/h. Immediately after tilling and each rain simulation test, the surface roughness was measured, using a laser profile meter. The tillage treatments induced significant changes in soil surface roughness and tortuosity, demonstrating the importance of the tillage system for the physical surface conditions, favoring water retention and infiltration in the soil. The increase in surface roughness by the tillage treatments was considerably greater than its

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“…Previous research (Steichen 1984, Góvers et al 2000 identified that runoff can be significantly lower over rough surfaces. The thickness of the undecomposed litter layer in the QM plot was recorded as being 1.2 cm; it can be assumed, therefore, that the large litter layer filled depressions in the soil which shortened the water-retention time, thus ensuring the rapid movement of water down slope.…”

Section: Relationship Between Vegetation and Runoffmentioning

confidence: 99%

The influence of vegetation types on water yields in the Da Hinggan Mountains of China

GaoJixi

ZhengHao

ShiZhongjie

et al. 2016

The Forestry Chronicle

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Climate change and excessive water use are endangering water resources in many areas of the world. As a result there is an urgency to increase available water resources and to improve water supply using vegetation management in catchment areas. The objectives of this study were to determine the effects of four vegetation types (Quercus mongolica F. ; QM), Larix spp. plantation ; LP), Prunus sibirica L.; PS) and grassland; GL) on water yields by monitoring surface runoff, infiltration, canopy interception and evapotranspiration in the Da Hinggan Mountains, a semi-arid area of China. Surface runoff for each vegetation type was triggered by rainfall of at least 6.6 mm, with surface runoff significantly increasing with rainfall events over 15.8 mm. The QM forest had the highest amount of runoff (1.34 mm), followed by LP (1.06 mm), PS (1.01 mm) and GL (0.69 mm), this accounting for only 0.23% -0.44% of the total water balance. Infiltration to a soil depth of 10 cm occurred with rainfall events with at least 13 mm, but the depth of infiltration rarely exceeded 30 cm during most rainfall events. More than half of the rainfall was taken up by vegetation during the growing season, with an order of LP > QM > PS > GL. Comprehensive analysis indicated that QM was the most appropriate vegetation for water conservation in this water-limited area, and this vegetation cover could effectively provide more water resources in the local area. Le peuplement de chênes a affiché la plus haute valeur d' écoulement de surface (1,34 mm), suivie de la plantation de Larix (1,06 mm), de la plantation de Prunus (1,01 mm) et de la prairie (0,69 mm) et cet écoulement totalisait représentait seulement entre 0,23 % et 0,44 % du bilan hydrique total. L' eau s'infiltrait à une profondeur de 10 cm infiltration de l' eau dans dans le sol lorsque les précipitations atteignaient à une profondeur de 10 cm s' est produite lors d'averses de pluie d'au moins 13 mm, mais la profondeur d'infiltration a rarement dépassé les 30 cm dans le cas de la plupart des aversesavec la plupart des précipitations. Plus de la moitié de l' eau des aversesde pluie a été absorbée par la végétation au cours de la saison de croissance selon dans l' ordre suivant : LP > QM > PS > GL. L'analyse globale a démontré que le type QM représentait le couvert végétal le plus approprié pour la conservation de l' eau dans cette région semi-aride et qu'il pouvait constituer une source additionnelle daméliorer l'approvisionnement en' eau dans la région.

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Soil roughness and overland flow

Cited by 202 publications

References 88 publications

Rugosidade da superfície do solo sob diferentes sistemas de manejo e influenciada por chuva artificial

Rugosidade da superfície do solo sob diferentes sistemas de manejo e influenciada por chuva artificial

Relations between soil surface roughness, tortuosity, tillage treatments, rainfall intensity and soil and water losses from a red yellow latosol

The influence of vegetation types on water yields in the Da Hinggan Mountains of China

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