Understanding Hydrological Processes under Land Use Land Cover Change in the Upper Genale River Basin, Ethiopia

Shigute, Mehari; Alamirew, Tena; Abebe, Adane; Ndehedehe, Christopher E.; Kassahun, Habtamu Tilahun

doi:10.3390/w14233881

Cited by 10 publications

(3 citation statements)

References 83 publications

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“…The results of the linear correlation of simulated discharge in the ATHYS model show an R 2 of 0.68 during the calibration with a decrease of 0.02 towards the validation. The observed drop in the ATHYS model performance based on R 2 and NSE criteria in the validation phase reveals that it is the least adapted to the particularities of the study area. The results of the other performances criteria, namely RSR and PBIAS (Table 2), confirm the findings mentioned above.…”

Section: Analysis Of the Calibration And Validation Performancesmentioning

confidence: 99%

“…For that, it must be managed and quantified by the implementation of tools that could help decision-support and management processes. Among these tools, hydrological models have emerged over the last thirty years [1][2][3][4][5][6][7], particularly models of rainfall-runoff transformation, recharge, and evaporation [8][9][10]. The primary focus of hydrological modeling is to reproduce the flows with the smallest possible error.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Hydrological Platforms in Assessing Rainfall-Runoff Behavior in a Mediterranean Watershed of Northern Morocco

Aqnouy

Ahmed

Ayele

et al. 2023

Water

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This research evaluates the applicability of different types of hydrological models to simulate discharge behavior scenarios in a northern Moroccan watershed, Oued Laou watershed (OLW). In this context, an improved understanding of the runoff mechanisms through hydrological modeling of the OLW can assist in the hazard risk management and facilitate the effective planning of water resources. For that end, a multitude of hydrological models were used to perform a very efficient modelling, and a comparative approach was adopted. Comparison of the models allowed the determination of potential sources of uncertainty in hydrological modelling of a subhumid watershed. Three models (ATelier Hydrologique Spatialisé (ATHYS), Hydrologic Modeling System (HEC-HMS), and Soil and Water Assessment Tool (SWAT)) with different characteristics were employed for a continuous modelling approach. The models were calibrated and validated using observed daily rainfall and streamflow data for 4 years (2004–2008) and 3 years (2009–2011), respectively. The multi-criteria model comparison (R², NSE, RSR, and PBIAS) showed that all three models are capable of reproducing the observed flows. The SWAT model performed well over both periods (NSE = 0.76 for calibration), with an improvement in validation (NSE = 0.84). A good agreement was also observed in the HEC-HMS model outputs, with an approximately stable NSE of 0.77 and 0.78 for calibration and validation phases, respectively. The ATHYS model showed a NSE value of 0.67 during the calibration, with a decrease of 0.06 towards the validation period. The other performance criteria confirmed these findings. Additionally, results suggest that semi-distributed and conceptual hydrological models are particularly suitable for the OLW given their physical heterogeneity. Generally, the integration of these models may be suitable for water resources assessment in OLW.

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Section: Analysis Of the Calibration And Validation Performancesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparison of Hydrological Platforms in Assessing Rainfall-Runoff Behavior in a Mediterranean Watershed of Northern Morocco

Aqnouy

Ahmed

Ayele

et al. 2023

Water

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“…A key part of the hydrological cycle is surface runoff. The water balance equation for the SWAT model [43] is as follows:…”

Section: Swat Model 241 Hydrology Model Setupmentioning

confidence: 99%

Analysis of Runoff Variation and Future Trends in a Changing Environment: Case Study for Shiyanghe River Basin, Northwest China

et al. 2023

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Changes in the hydrological cycle and water resources are inevitable consequences of environmental change, and runoff is an important element of the hydrological cycle. Therefore, the assessment of runoff changes is crucial for water resources management and socio-economic development. As an inland river basin in the arid zone of northwest China, the Shiyang River Basin is very vulnerable to environmental changes. Consequently, this study evaluated the past runoff evolution of the Shiyang River basin using a variety of statistical tools. In addition, the improved Soil and Water Assessment Tool (SWAT) was used to predict runoff trends from 2019 to 2050 under potential future climate change and land use projection scenarios in the future for the Shiyang River Basin. In the inland river basins, water resources mainly come from headwaters of the rivers in the upper mountainous regions, where they are more sensitive. Therefore, this study not only examined the mainstream of the Shiyang River, but also the six tributaries in the upper stream. The results indicate that the mainstream of the Shiyang River Basin and its six upstream tributaries all showed declining trends from the 1950s to 2019, and most of the rivers will continue to insignificantly decrease until 2050. Furthermore, there are two main timescales for runoff in the past as well as future: one is around 40 years and another is 20-30 years. In the meantime, the Shiyang River and its tributaries have relatively consistent change characteristics. The results of this study will provide assistance to basin management agencies in developing more appropriate water resource management plans.

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Assessing the Hydrological Response to Land Use Changes Linking SWAT and CA‐Markov Models

Ren,

Deng,

Zhang

et al. 2024

Hydrological Processes

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Land use change, as a major driving factor of watershed hydrological process, has a significant influence on watershed hydrological change. In addition, a series of hydrological models, as important tools for simulating hydrological impacts, are widely employed in studying land use change. However, when employing hydrological model to analyse the hydrological impacts of land use changes, most previous studies focused on the evolution of historical land use change and lacked reasonable predictions of future land use. Therefore, it is necessary to extend such studies to future scenarios to cope with possible future hydrological variations in the basin. Given this, this paper making the Wuwei section of Shiyang River Basin as the study area, coupled the SWAT (Soil and Water Assessment Tool) model for hydrological simulation with the CA‐Markov (cellular automata‐Markov chain) model for future land use prediction to analyse the regional hydrological effects caused by historical and future land use changes. In addition, the general CA‐Markov model directly uses a system‐generated suitability atlas. In contrast, this study applied logistic regression and Multi‐criteria evaluation (MCE) methods to construct the suitability atlas, thereby establishing the Logistic‐CA‐Markov and MCE‐CA‐Markov models. Based on the model results, the main results are as follows: (1) The land use in study area is mainly grassland and barren, accounting for more than 80%. Additionally, forest is changing at the highest rate among all land use types. (2) In terms of the percentage of grassland and forest, the future land use predicted by MCE‐CA‐Markov (Multi‐criteria evaluation‐cellular automata‐Markov chain) has the largest forest and grassland coverage (57.78%), whereas the future land use predicted by Logistic CA‐Markov has the lowest (54.69%), indicating that the former pays more attention to the sustainable development of ecological environment. (3) The study area's R2 = 0.83, NSE = 0.79, PBIAS = −18.6%, and validation R2 = 0.81, NSE = 0.76, PBIAS = −17.8% demonstrate the favourable application of the SWAT model. (4) Based on simulated runoff results under historical and future land use scenarios, the amount of increasing grassland and forest coverage in the study area would eventually rise water yield (WYLD) by increasing lateral runoff (LATQ), increasing subsurface runoff (GWQ), and reducing surface runoff (SURQ). The study contributes to a better understanding of the impact of land use change on regional water resources and water balance, thus guiding regional water resources management and sustainable development.

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Understanding Hydrological Processes under Land Use Land Cover Change in the Upper Genale River Basin, Ethiopia

Cited by 10 publications

References 83 publications

Comparison of Hydrological Platforms in Assessing Rainfall-Runoff Behavior in a Mediterranean Watershed of Northern Morocco

Comparison of Hydrological Platforms in Assessing Rainfall-Runoff Behavior in a Mediterranean Watershed of Northern Morocco

Analysis of Runoff Variation and Future Trends in a Changing Environment: Case Study for Shiyanghe River Basin, Northwest China

Assessing the Hydrological Response to Land Use Changes Linking SWAT and CA‐Markov Models

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