Soil loss and runoff obtained with customized precipitation patterns simulated by InfiAsper

Carvalho, Daniel Fonseca de; Macedo, Pietro Menezes Sanchez; Pinto, Marinaldo Ferreira; Almeida, Wilk Sampaio de; Schultz, Nivaldo

doi:10.1016/j.iswcr.2021.12.003

Cited by 7 publications

(5 citation statements)

References 39 publications

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“…In the rectangular plot, runoff and soil loss were higher in the IN and DL patterns, reaching, respectively, an average of 1.9 and 1.7 times greater than the values obtained in the AV pattern. A similar effect was obtained by [10] using the same rainfall simulator, but in soil with a higher clay content in the surface layers. In general, simulated rainfall under the DL pattern tends to provide higher rates of runoff and soil loss, mainly due to the prolonged period of moisture that the soil is exposed to before the peak rainfall intensity [39].…”

Section: Water and Soil Lossessupporting

confidence: 78%

“…The area had a mean slope of 0.09 m m −1 , and once installed, the plots were pre-wet and close to the surface using a watering can, aiming to standardize the soil moisture in the respective experimental units and reduce the time between the beginning of the precipitation and the surface runoff [10]. Then, the InfiAsper simulator was installed and positioned to apply rainfall, maintaining a height of 2.3 m from the nozzles to the ground surface.…”

Section: Methodsmentioning

confidence: 99%

“…These pieces of equipment have been used to evaluate the erosion process under laboratory conditions [5] and in the experimental field [6][7][8]. Concerning studies on natural rainfall, they have advantages such as the ability to reproduce rainfall events with similar characteristics, the possibility of varying the diameter and kinetic energy of the drops [9], and reducing the time and costs involved in conducting research [10].…”

Section: Introductionmentioning

confidence: 99%

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Soil and Water Losses with Simulated Rainfall Considering Experimental Plots and Rainfall Patterns

de Carvalho,

Alves,

Macedo

et al. 2023

Soil Systems

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Rainfall simulators are important pieces of equipment to investigate hydrological processes and soil erosion. Here, we investigated the operational characteristics, the rainfall characteristics, and the soil erosion process under collecting plots and rainfall patterns using the InfiAsper simulator. We evaluated the standard plot of the simulator in a rectangular shape (1.0 × 0.7 m), as well as a circular plot (0.8 m diameter), and four precipitation patterns, characterized as advanced (AV), intermediate (IN), delayed (DL), and constant (CT). In the laboratory, uniformity and water consumption tests were carried out for shutter-disk rotations from 138 to 804 rpm, and in the field, simulated rains were applied on a Dystric Acrisol. Rains with different patterns were simulated and presented a uniformity coefficient above 83% for the circular plot and 78.2% for the rectangular plot. The soil erosion varied as a function of the precipitation patterns and, to a lesser extent, according to the shape of the experimental plot. However, runoff and soil loss in AV were 2.1 and 3.5 times greater when using a circular plot. Concerning IN and DL, the length of the rectangular plot may have influenced the formation of small furrows throughout most of the simulated rainfall event, providing greater runoff (13.1 mm) and soil loss (13.6 g m−2). The results obtained are promising, but plots with different shapes associated with rainfall patterns simulated by InfiAsper must be evaluated in other classes and soil use and cover conditions.

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Section: Water and Soil Lossessupporting

confidence: 78%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Soil and Water Losses with Simulated Rainfall Considering Experimental Plots and Rainfall Patterns

de Carvalho,

Alves,

Macedo

et al. 2023

Soil Systems

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“…Additionally, the simulation equipment allows control of the duration and rainfall intensity, and the size and speed of the droplets impacting the soil [20]. Known as sprinkler infiltrometers, these simulators take less time and have a lower cost when conducting field research, compared to experimental natural rainfall plots, and can accurately control water input, thereby reducing the errors associated with natural rainfall variability [23].…”

Section: Introductionmentioning

confidence: 99%

Effects of Land Use and Cropping on Soil Erosion in Agricultural Frontier Areas in the Cerrado-Amazon Ecotone, Brazil, Using a Rainfall Simulator Experiment

et al. 2023

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Agricultural soils provide ecosystem services, but the removal of natural vegetation reduces water infiltration capacity, increasing surface runoff. Thus, monitoring erosion is critical for sustainable agricultural management. Sediment losses and surface runoff were evaluated using a simulated rainfall of 75 mm/h in areas with crops and pastures in both the Caiabi River and Renato River sub-basins of the Teles Pires River watershed in Mato Grosso State, Brazil. In both the Caiabi and Renato sub-basins, data were collected from 156 observations in the upper, middle, and lower regions where (1) soybeans, (2) maize, and (3) pasture were grown alone, with another crop, or with soil that was scarified. Erosion occurred independent of soil texture and was closely related to the management and use of systems involving fewer crops and more soil scarification, regardless of sub-basin location. In uncovered, scarified soil, the soil losses from erosion were greater compared to covered soil, regardless of sub-basin and sub-basin region. In the Renato River sub-basin, soil losses in cultivated areas not planted with crops but with scarification were 66.01, 90.79, and 60.02 g/square meter in the upper, middle, and lower regions, respectively. Agricultural producers need to increase the planting of crops throughout the year and minimize soil disturbance, which will reduce soil erosion and improve sustainability.

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“…In addition, the relationships between LMs and SEM/SSC were not consistent in different watersheds. This may have been caused by the erosion process, which was also influenced by precipitation patterns, soil properties, slope, and topography [73,[75][76][77]. WY/RC and SEM/SSC were both positively correlated with PAFRAC, NP, PD, and MSIEI in most watersheds.…”

Section: Effects Of Various Lms On Hydrological Processesmentioning

confidence: 98%

Relationships between Landscape Patterns and Hydrological Processes in the Subtropical Monsoon Climate Zone of Southeastern China

Wei

Dong

et al. 2023

Remote Sensing

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With rapid economic development, extensive human activity has changed landscape patterns (LPs) dramatically, which has further influenced hydrological processes. However, the effects of LPs changes on hydrological processes, especially for the streamflow–sediment relationship in the subtropical monsoon climate zone, have not been reported. In our study, 10 watersheds with different sizes in the subtropical monsoon climate zone of southeastern China were chosen as the study area, and the effect of the 14 most commonly used landscape metrics (LMs) on 4 typical hydrological indices (water yields (WY), the runoff coefficient (RC), the soil erosion modulus (SEM), and the suspended sediment concentration (SSC)) were analyzed based on land use maps and hydrological data from 1990 to 2019. The results reveal that the LP characteristics within the study area have changed significantly. The number of patches and landscape shape indices were significantly positively correlated with watershed size (p < 0.01). For most watersheds, the largest patch index was negatively correlated with WY, RC, and SEM, and the perimeter area fractal dimension was positively correlated with WY, RC, SEM, and SSC. The effects of several LMs on the hydrological indices had scale effects. WY/RC and the interspersion and juxtaposition index were negatively correlated in most larger watersheds but were positively correlated in most smaller watersheds. Similar results were found for Shannon’s diversity/evenness index and SEM. In general, an increase in a small patch of landscape and in landscape diversity would increase WY, the fragmentation of LPs would result in more soil erosion, and LPs would affect the relationship between streamflow and sediment yield. As a result, a proper decrease in landscape fragmentation and physical connectivity in the subtropical monsoon climate zone of southeastern China would benefit soil erosion prevention. These results enhance the knowledge about the relationship between LPs and hydrological processes in the subtropical monsoon climate zone of southeastern China and benefit local water and soil conservation efforts.

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Soil loss and runoff obtained with customized precipitation patterns simulated by InfiAsper

Cited by 7 publications

References 39 publications

Soil and Water Losses with Simulated Rainfall Considering Experimental Plots and Rainfall Patterns

Soil and Water Losses with Simulated Rainfall Considering Experimental Plots and Rainfall Patterns

Effects of Land Use and Cropping on Soil Erosion in Agricultural Frontier Areas in the Cerrado-Amazon Ecotone, Brazil, Using a Rainfall Simulator Experiment

Relationships between Landscape Patterns and Hydrological Processes in the Subtropical Monsoon Climate Zone of Southeastern China

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