Impacts of land use and land cover changes on hydrological processes and sediment yield determined using the SWAT model

Serrão, Edivaldo Afonso de Oliveira; Silva, Madson Tavares; Ferreira, Thomás Rocha; Ataide, Lorena Conceição Paiva de; Santos, Cleber Assis dos; Lima, Aline Maria Meiguins de; Silva, Vicente de Paulo Rodrigues da; Sousa, Francisco de Assis Salviano de; Gomes, Dênis José Cardoso

doi:10.1016/j.ijsrc.2021.04.002

Cited by 73 publications

(25 citation statements)

References 95 publications

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“…However, the statistical summary of the model's performance evaluation in the Dinya reach was highly satisfactory with NS of 0.91, r 2 of 0.93 and p-factor of 1.00 (Table 3) [26,47]. The sediments validation results show statistical summary for the Kaduna sub-basin with NS (0.47), r 2 (0.82), p-factor (0.63) and r 2 (1.49) values that are suitable for modelling (Table 3) [47], and somewhat contrasting to the non-satisfactory dataset of the Gutalu sub-basin with NS of −0.11, r 2 of 0.06, p-factor of 0.88, and r-factor of 2.96. The documented high r-factor of the flow and sediments calibration/validation resulted from model uncertainties, which may be in the form of (i) conceptual uncertainties (i.e., portioning method of SCS curve number), (ii) processes occurring within the watershed that were not included in the model (wetland, erosion mining, etc.)…”

Section: Sensitivity Analysis Calibration and Validation Datasetsmentioning

confidence: 90%

“…Land-use land cover (LULC) information is an essential component in watershed modelling with regards to hydrology, sediment yield, and water quality within the basin area, because changes in LULC may result in significant modification of sediment yield pattern within the watershed. Additionally, it could lead to variation in the hydrological response of watersheds, thus impacting river flows [1,2]. Given constant hydrological variables, change in sediment yield can be attributed to the corresponding alteration in land use in the upstream catchment, as it gave rise to detrimental sedimentation in the Ethiopian Haramaya Lake [3].…”

Section: Introductionmentioning

confidence: 99%

“…pattern within the watershed. Additionally, it could lead to variation in the hydrological response of watersheds, thus impacting river flows [1,2]. Given constant hydrological variables, change in sediment yield can be attributed to the corresponding alteration in land use in the upstream catchment, as it gave rise to detrimental sedimentation in the Ethiopian Haramaya Lake [3].…”

Section: Introductionmentioning

confidence: 99%

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Impacts of Land-Use Change, Associated Land-Use Area and Runoff on Watershed Sediment Yield: Implications from the Kaduna Watershed

Japheth

Adepehin

Ekhwan

et al. 2022

Water

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An uncontrolled sediment influx from the watershed upstream is a known threat to dam stability, while the pattern and amount of sediment yield are influenced by the predominant upstream land-use and land cover (LULC) types, precipitation amount, and intensity. Hence, the need to monitor sediment yield accumulation and its controlling factors in dam operation becomes crucial. In this paper, the Soil and Water Assessment Tool (SWAT) was used to assess the roles of land-use change, land cover area, and runoff on watershed’s sediment yield based on change detection analysis between 1975 and 2013 in the Kaduna Watershed (Nigeria), Western Africa. The SWAT standard procedures for the simulation of hydrological characteristics and sediment yields prediction were adopted. The datasets were calibrated for a period of 46 years and validated using 2015–2017 measured flow data, and suspended sediments concentration (SSC) acquired between March and October 2018. The model function was statistically determined using the Nash-Sutcliffe (NS), the coefficient of determination (r2) and the percentage of observed data (p-factor). The evaluation results of the SWAT model yielded NS, r2 and p-factor of 0.71, 0.80, and 0.86, respectively. These data suggest that the model performed satisfactorily for streamflow and sediment yield predictions. Findings suggest that the extinction of evergreen forests and a significant change in land-use from range grasses and forest to agriculture generic and residential types between 1975 and 2013, which resulted in surface runoff, sediment yield, and flow alteration. Evapotranspiration increased by 22.40% between 1975 and 2013. These changes have negatively impacted the watershed runoff by 56.00% and model sediment yield by 68.00% at the end of 2013. Thus, these variations can influence various human activities in the watershed, such as food security, livestock, energy production and water supply. It is hypothesized from the presented data that land use types exact a more dominant control on runoff and sediment yield than land cover area, although climatic influence may not be ruled out.

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Section: Sensitivity Analysis Calibration and Validation Datasetsmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Impacts of Land-Use Change, Associated Land-Use Area and Runoff on Watershed Sediment Yield: Implications from the Kaduna Watershed

Japheth

Adepehin

Ekhwan

et al. 2022

Water

View full text Add to dashboard Cite

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“…LULC variations have been studied at various geographical and temporal ranges for their impact on hydrology and soil loss (Assfaw, 2020; Baig et al, 2022; Chaemiso et al, 2021; Choto & Fetene, 2019; Gebremichael, 2021; Wang et al, 2022). Furthermore, evaluations of multiple research papers indicate that LULC modification might modify streamflow, hence altering a basin’s hydrological components (HCs) and sediment yield (SED) (Afonso de Oliveira Serrão et al, 2022; Kumar et al, 2018; Negese, 2021).…”

Section: Introductionmentioning

confidence: 99%

Hydrological Components and Sediment Yield Response to Land Use Land Cover Change in The Ajora-Woybo Watershed of Omo-Gibe Basin, Ethiopia

Toma

Belete

Ulsido

2023

Air, Soil and Water Research

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Understanding how watersheds respond to ecological changes and how LULC alteration affects watershed hydrology is crucial for water and soil resource management. LULC changes in the Ajora-Woybo watershed, Ethiopia, have momentously affected the water and soil resources. The researchers aimed to see how LULC changes affect hydrological components (HCs) and sediment yield (SED) in the watershed, both historically and in the future. The Soil and Water Assessment Tool (SWAT2012) and Partial Least Squares Regression (PLSR) models were used to investigate the contribution of each of the LULC classes to achieve the goal. The findings revealed a continual growth of cultivated land, built-up areas, and bare land, and a retreat of shrub land and forest land during the 2000 to 2020 periods, which is expected to continue in the 2035 and 2050 periods. Changes in LULC that happened over the historical era increased yearly surface runoff (23.5%), water yield (5.7%), and sediment yield (23.5%). On the other hand, the observed modifications have reduced lateral flow (12.8%) and groundwater flow (10.9%). Except for the 2020 LULC period, evapotranspiration decreased during the studied years. The future impacts of LULC states are predicted to increase in line with the historical trend. The PLSR results showed that cultivated land and built-up areas had a positive association with surface runoff and sediment yield, but shrub land and forest land had a negative correlation. This highlights the importance of controlling the LULC change as soon as possible to maintain long-term watershed stability.

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“…Unlike the previously mentioned hydrological models, the soil and water assessment tool (SWAT) model requires only a tiny direct calibration to produce accurate hydrological predictions. [ 22 , 25 ] Furthermore, [ 26 ] indicated that the SWAT model is a good estimator of hydro‐sedimentological processes that decision‐makers can use to manage water and environmental resources. To this effect, the SWAT model was applied in this investigation.…”

Section: Introductionmentioning

confidence: 99%

Impacts of Land‐Use Change on the Hydrology of Lake Tana Basin, Upper Blue Nile River Basin, Ethiopia

Getachew

Manjunatha

2022

Global Challenges

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Human activities impact hydrology through changes in land use and land cover. This study examins the effects of changing land use on hydrological processes using the soil and water assessment tool (SWAT) model. The data is acquired from Landsat 4‐5 Thematic Mapper (TM) in 1989, Landsat 7 Enhanced Thematic Mapper Plus (ETM+) in 2005, and Landsat 8 Operational Land Inventory (OLI) in 2019. Image preprocessing, which includes georeferencing, radiometric and atmospheric correction, image enhancement, band composite, mosaicking, and sub‐setting, are performed. After that, supervised classification, accuracy assessment, and change detection are carried out. The hydrological changes in 1989, 2005, and 2019 are analyzed using land‐use maps. The SWAT model's calibration, validation, and sensitivity analysis are performed using the Integrated Parameter Estimation and Uncertainty Analysis Tool in the four main rivers of the basin. Farmlands and built‐up lands are found to have steadily increased in the basin, while shrublands, grasslands, and bare lands declined. Due to an expansion of agricultural and built‐up lands and a decrease in shrublands and grasslands, the basin's mean annual water yield and surface runoff increased in 2019, while evapotranspiration and lateral flow decreased compared to 1989 and 2005. Therefore, future watershed and basin management shall consider changing land use.

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Impacts of land use and land cover changes on hydrological processes and sediment yield determined using the SWAT model

Cited by 73 publications

References 95 publications

Impacts of Land-Use Change, Associated Land-Use Area and Runoff on Watershed Sediment Yield: Implications from the Kaduna Watershed

Impacts of Land-Use Change, Associated Land-Use Area and Runoff on Watershed Sediment Yield: Implications from the Kaduna Watershed

Hydrological Components and Sediment Yield Response to Land Use Land Cover Change in The Ajora-Woybo Watershed of Omo-Gibe Basin, Ethiopia

Impacts of Land‐Use Change on the Hydrology of Lake Tana Basin, Upper Blue Nile River Basin, Ethiopia

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