Curve Number Estimation for Ungauged Watershed in Semi-Arid Region

Krisnayanti, Denik Sri; Bunganaen, Wilhelmus; Frans, John H.; Seran, Yustinus Akito; Legono, Djoko

doi:10.28991/cej-2021-03091711

Cited by 63 publications

(24 citation statements)

References 14 publications

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“…Ethiopia is highly exposed to erosion during the heavy rain season between June and September. A study by Krisnayanti et al (2021) in Indonesia reported that a large volume of rainfall exceeds the soil infiltration capacity, resulting in excess erosion.…”

Section: Introductionmentioning

confidence: 99%

Soil loss estimation and prioritization using geographic information systems and the RUSLE model: a case study of the Anger River sub-basin, Western Ethiopia

Moisa

Dejene

Merga

et al. 2022

Journal of Water and Climate Change

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Soil erosion is a major environmental problem that affects people's livelihoods and environmental health, particularly in developing countries. The present study aimed to identify soil erosion hotspot areas and prioritization in the Anger River Sub-basin for conservation planning. The Revised Universal Soil Loss Equation model and geospatial technologies were adopted to identify soil erosion hotspot areas and prioritization of the sub-watershed for conservation planning. Key parameters such as rainfall data, soil data, slope length and steepness factor, cover management, and conservation practices were used to estimate potential soil erosion risk in the sub-watershed. The results showed that the annual soil loss rate in the Anger River Sub-basin ranged between 0 and 932.6 t/ha/year with a mean annual soil loss of 83.7 t/ha/year. About 1,140.7 km2 (43.6%) and 220.6 km2 (8.4%) were categorized under very severe and severe soil loss types, respectively. The mid- and upstream areas, as well as the steeper parts of the sub-watershed, were highly exposed to soil erosion. This research provides tangible evidence in the decision-making process for soil and water conservation practices at a sub-watershed scale. Moreover, further research should be conducted at a micro-watershed scale to minimize the effects of soil erosion on the health and sustainability of the watershed.

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Section: Introductionmentioning

confidence: 99%

Soil loss estimation and prioritization using geographic information systems and the RUSLE model: a case study of the Anger River sub-basin, Western Ethiopia

Moisa

Dejene

Merga

et al. 2022

Journal of Water and Climate Change

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“…Typify the soil, land use, topography and heterogeneity of physical condition is important to be able to estimate runoff (Krisnayanti et al, 2021 ). Post-fire runoff events can mobilize pulses of MeHg and THg to streams, but (Patel et al, 2019 ) explain that Hg methylation does not run parallel to THg trends, and this is important given the biological implications of MeHg in the environment.…”

Section: Development and Resultsmentioning

confidence: 99%

Contribution to understanding the influence of fires on the mercury cycle: Systematic review, dynamic modelling and application to sustainable hypothetical scenarios

López

Barrón

Bugallo

2022

Environ Monit Assess

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Mercury (Hg) mobilization and accumulation in the environment is directly related to forest fires. Biomass burning accounts for about 13% of the total contribution of Hg from natural sources. The aim of this work is to contribute to the knowledge of how wildfires modify mercury compounds behaviour and the effects it has in the Hg cycle, based on a systematic bibliographic review and analysis. Systems dynamics is an adequate focus to analyze the mobilization of Hg due to wildfires, which meets all the requirements to be studied by multimedia modelling. The development and application for the first time of a dynamic multimedia model of Hg taking into account specifically the influences of wildfires is one of the novelties of this work. Different scenarios show that an increase in the number of fires will consequently increase the mercury emitted into the atmosphere, modifying its natural cycle, producing a long-term modification of Hg compositions and concentrations in the different media. Hg movement caused by wildfires can cause complications in living beings and alter the ecosystems. This study found that the Hg soil content could as well be an indicator to measure the impact of fire on the environment. This model can also be generalized to conduct additional studies under comparable conditions, helping to understand the importance of forest fires in global Hg cycles. Graphical abstract

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“…In addition, Elshamy et al (2009) and Mengistu & Sorteberg (2012) assumed that a 1 °C increase in temperature would increase PET by 4% which leads to a decrease in SURQ. In addition, Krisnayanti et al (2021) correlate changes in runoff depth with rainfall.…”

Section: Climate Change Impact On Water Balance Componentsmentioning

confidence: 99%

Future climate change and impacts on water resources in the Upper Blue Nile basin

Takele

Gebre

Gebremariam

et al. 2021

Journal of Water and Climate Change

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This study aims to assess the impact of climate change on the water resources of the Upper Blue Nile basin using an integrated climate and hydrological model. The impact of climate change on water resources is being assessed using the regional climate model (RCM) under the representative concentration pathway (RCP4.5 and RCP8.5) scenarios and the Soil and Water Assessment Tool (SWAT) hydrological model. Future climate scenarios have been developed for the 2030s (2021–2040) and the 2050s (2041–2060). The study found that the projected rainfall shows a decreasing trend and is not statistically significant, while the temperature shows an increasing trend and is statistically significant. Due to the sharp rise in temperature, the annual evapotranspiration increased by about 10.4%. This and the declining trend of rainfall will reduce streamflow up to 54%, surface runoff up to 31%, and water yield up to 31%. Climate change causes seasonal and annual fluctuations in the water balance components. However, the projected seasonal changes are much greater than the annual changes. Therefore, the results of this study will be useful to basin planners, policymakers, and water resources managers in developing adaptation strategies to offset the adverse effects of climate change in the Upper Blue Nile basin.

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Curve Number Estimation for Ungauged Watershed in Semi-Arid Region

Cited by 63 publications

References 14 publications

Soil loss estimation and prioritization using geographic information systems and the RUSLE model: a case study of the Anger River sub-basin, Western Ethiopia

Soil loss estimation and prioritization using geographic information systems and the RUSLE model: a case study of the Anger River sub-basin, Western Ethiopia

Contribution to understanding the influence of fires on the mercury cycle: Systematic review, dynamic modelling and application to sustainable hypothetical scenarios

Future climate change and impacts on water resources in the Upper Blue Nile basin

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