Effect of dry spells and soil cracking on runoff generation in a semiarid micro watershed under land use change

Santos, Júlio César Neves dos; Andrade, Eunice Maia de; Guerreiro, Maria João; Palácio, Helba Araújo de Queiroz; Neto, José Osório do Nascimento

doi:10.1016/j.jhydrol.2016.08.016

Cited by 43 publications

(38 citation statements)

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“…Although the concept of event runoff dates back to the work of Sherman (1932), analyzing event runoff generation processes is still an active research field in hydrology. Many of the studies published in the literature, either based on field measurements (e.g., Neves dos Santos et al, 2016;Ries et al, 2017;Scherrer et al, 2007;Tromp-van Meerveld & McDonnell, 2006;Weiler & McDonnell, 2004) or hydrological modeling (e.g., Ala-aho et al, 2017;Frei et al, 2010;Sinha et al, 2016;Vivoni et al, 2007), focus on runoff generation at small scales, such as irrigation plots, hillslopes, or single catchments. These studies point to a great variability of the factors controlling runoff generation during rainfall events, but results are site and scale specific.…”

Section: 1029/2018wr022588mentioning

confidence: 99%

Exploring Controls on Rainfall‐Runoff Events: 2. Regional Patterns and Spatial Controls of Event Characteristics in Germany

Tarasova

Basso

Poncelet

et al. 2018

Water Resources Research

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This study unveils regional patterns of rainfall‐runoff event characteristics in Germany and identifies their spatial controls. Characteristics describing mean value, variability, and seasonality of event runoff coefficient, time scale, rise time, and of the occurrence of multiple‐peak events are derived for a set of 196,073 rainfall‐runoff events observed in 401 mesoscale German catchments. Multiobjective performances of various variable selection methods are used to identify hydrologically relevant variables from a comprehensive set of 115 descriptors of climate, topography, geomorphology, soil, land use, hydrogeology, and geology for every catchment. Results show that although event characteristics have relatively clear regional patterns due to the dominance of climatic controls at regional scale, subsurface properties (i.e., catchment storage) play a considerable role for the prediction of event runoff response. Compared to other tested variable selection methods, the application of a backward elimination procedure allows for the most accurate prediction of spatial patterns and regionalized values of event characteristics identifying soil depth, hydraulic permeability and frequency, size, and seasonality of wet spells as hydrologically relevant catchment descriptors. Climatic and hydrogeological descriptors outperform other generic groups of catchment descriptors. The hydrological interpretation of the emergent regional pattern of event characteristics, their variability, and seasonality provides insight on archetypical catchment behaviors and their controls.

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Section: 1029/2018wr022588mentioning

confidence: 99%

Exploring Controls on Rainfall‐Runoff Events: 2. Regional Patterns and Spatial Controls of Event Characteristics in Germany

Tarasova

Basso

Poncelet

et al. 2018

Water Resources Research

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“…The SY also presented a good correlation with the Peak Flow (Qmax), which indicated the dependence of the sediment transporto n the mass flow energy. Higher runnof depths may lead to an increased transport energy, which-with disaggregated sediments -increases the SY (PENG; WANG, 2012; GARCIA-ESTRINGANA et al, 2013;SANTOS et al, 2016). PPT -precipitation (mm); I5 -maximum intensity in 5 min (mm h -1 ); I10 -maximum intensity in 10 min (mm h -1 ); I15 -maximum intensity in 15 min (mm h -1 ); I20 -maximum intensity in 20 min (mm h -1 ); I30 -maximum intensity in 30 min (mm h -1 ); I45 -maximum intensity in 45 min (mm h -1 ); I60 -maximum intensity in 60 min (mm h -1 ); EI30 -rainfall erosivity index (MJ mm ha -1 h -1 ); AMS -antecedent soil moisture based on mass (%); PPT5 -precipitation of the antecedent five days (mm); CDD -consecutive dry days (days with PPT < 1 mm); Qmax.…”

Section: Resultsmentioning

confidence: 99%

“…Soil degradation is a serious worldwide problem, especially in arid and semiarid regions (WANG et al, 2016), because of the limiting natural resources in these environments. The effects of soil erosion include reduced fertility (BAKKER et al, 2005;CERDAN et al, 2010), reduced soil water storage capacity (SANTOS et al, 2016), and pollution and sedimentation of bodies of water (BAKKER et al, 2005;DE ARAÚJO;GUENTNER;BRONSTERT, 2006;SANTOS et al, 2014). Negative factors such as these can cause land to be abandoned, and lead to the decline of rural communities (BAKKER et al, 2005), because of their economic, social, cultural, productive, and environmental effects.…”

Section: Introductionmentioning

confidence: 99%

“…It is impossible to directly transfer soil loss data linearly between scales due to the predominance of different processes connected to the generation of runoff, disintegration, and sediment transport in a specific spatial scale (CAMMERAAT, 2002;SANTOS et al, 2016). In large slope scales, processes such as the formation of ravines and gullies intensify sediment yield (POESEN et al, 2003), while vegetation barriers and areas with low slopes can cause the deposition of part of the transported sediments (FRYIRS et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

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Erosive Process Control in the Brazilian Semiarid Region

et al. 2018

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The adoption of measures to prevent and control erosive processes requires information about the factors affecting the erosion and the sediment transport conditions. However, the sediment yield of a basin depends on the availability of eroded material and the sediment transport capacity. Thus, the objective of this study was to identify the factors that affect the sediment transport capacity at different spatial scales in an area with caatinga vegetation. The study was carried out in the Iguatu Experimental Basin, in the state of Ceará, Brazil, from 2009 to 2014, by monitoring two scale levels: watershed with 2.06 ha, and erosion plot with 20 m². The variables evaluated for the rainfall events were precipitation, intensity of rainfall, antecedent soil moisture, precipitation of the antecedent five days, consecutive dry days, peak flow, runoff depth, and sediment yield. During the study period, 263 rainfall events (>2 mm) and 86 events generating runoff were recorded. Three Principal Components (PC) were developed using the Principal Component Analysis, which explained more than 79% of the total variance. Variables connected to the kinetic energy capacity of the rainfall to disaggregate soil particles, the energy for sediment transport, and the soil water content were framed in the CP1, CP2, and CP3, respectively. In the evaluated scales, the sediment yield presented a high correlation with the runoff depth, which indicates limiting conditions for sediment yield by the mass flow energy.

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“…The rainfall characteristics affected the grouping results of the watershed RC, with the rainfall in group 1 presenting lower rainfall, I30 and erosivity, however, presenting the highest average of 5-day accumulated precipitation (Table 4). According to Santos et al (2016), a 5-day accumulated precipitation is needed for low magnitude events (lower than 40 mm) to generate runoff. Table 4.…”

Section: Resultsmentioning

confidence: 99%

Rainfall Characterization and Sedimentological Responses of Watersheds With Different Land Uses to Precipitation in the Semiarid Region of Brazil

et al. 2017

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-The objective of this work was to evaluated the precipitation characteristics (depth, I30 and erosivity) and their effects on sediment production in three watersheds under different managements of land use 35-year regenerating Caatinga (RC), thinned Caatinga (TC), which underwent thinning of trees with diameter smaller than 10 cm; and deforested Caatinga (followed by burning and pasture) (DC). The experimente was conducted in the central, tropical semiarid region of the State of Ceará, Brazil. The precipitation events, surface runoff and sediment production were monitored from 2010 to 2015. The precipitation characteristics were subjected to Pearson's correlation at 1 and 5% of significance and the events that produced sediments in each watershed were hierarchically grouped by hierarchical cluster analysis technique. Two hundred precipitation events were recorded, with 23 (RC), 18 (TC) and 43 (DC) events producing sediments. The use of thinning (TC) decreased the sediment production by 53.5%, while the deforestation, burn and pasture cultivation (DC) increased soil losses by 14%, compared with the RC. The sediment production was greatly correlated with the I30 in the three watersheds, denoting the erosion process great dependence on the precipitation intensity.Keywords: Precipitation. Sediment Production. Watersheds. CARACTERISTICAS DAS CHUVAS E RESPOSTAS SEDIMENTOLOGICAS EM DIFERENTES USOS DO SOLO NO SEMIÁRIDORESUMO -Obejtivou-se com este estudo investigar as caracteristicas das chuvas (altura precipitada, I30 e erosividade) e suas correlações com a produção de sedimentos em três microbacias submetidas aos seguintes manejos: Caatinga em Regeneração (CER) há 35 anos; Caatinga Raleada (CRA) passou pelo raleio das árvores com diâmetro menor que 10 cm; Desmatamento/Queima/Plantio de Pastagem (DQP). A área de estudo é representative de região semiárida tropical e está localizada na parte central do estado do Ceará. Foram monitorados eventos puviométricos, escoamento superficial e produção de sedimentosdos anos de 2010 a 2015.As características das chuvas foram submetidas a correlação de Pearson a nível de 1 e 5 % de significância e os eventos que produziram sedimentos em cada microbacia foram agrupados hierarquicamente pela técnica de Análise de Agrupamento Hierárquico. Ao todo foram registrados 200 eventos pluviométricos dos quais 23, 18 e 43 eventos produziram sedimentos nas microbacias CER, CRA e DQP respectivamente. A adoção do manejos de raleamento reduziu a produção de sedimentos em 53,5 %, enquanto que o DQP promoveu um aumento das perdas de solo em 14 % em relação à CER. A produção de sedimentos expressou uma maior correlação com o I30 para as três microbacias expressando a maior dependência do processo erosive da intensidade das chuvas.Palavras-chave: Precipitação pluviométrica. Produção de sedimentos. Micorbacias.

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Effect of dry spells and soil cracking on runoff generation in a semiarid micro watershed under land use change

Cited by 43 publications

References 20 publications

Exploring Controls on Rainfall‐Runoff Events: 2. Regional Patterns and Spatial Controls of Event Characteristics in Germany

Exploring Controls on Rainfall‐Runoff Events: 2. Regional Patterns and Spatial Controls of Event Characteristics in Germany

Erosive Process Control in the Brazilian Semiarid Region

Rainfall Characterization and Sedimentological Responses of Watersheds With Different Land Uses to Precipitation in the Semiarid Region of Brazil

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