SWAT Model Adaptability to a Small Mountainous Forested Watershed in Central Romania

Tudose, N; Marin, Mirabela; Cheval, Sorin; Ungurean, Cezar; Davidescu, Ş.; Tudose, Oana Nicoleta; Mihalache, Alin Lucian; Davidescu, A. A.

doi:10.3390/f12070860

Cited by 13 publications

(12 citation statements)

References 79 publications

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“…Without the calibration of the hydrological model, the training effect will be very different from the measured value. The SWAT-CUP tool is one of the effective ways to calibrate the SWAT model and this tool is suitable to support decision makers in conceptualizing sustainable watershed management, allowing decision makers to better calibrate the model [29,30].…”

Section: Swat Model Calibration and Results Analysismentioning

confidence: 99%

Prediction of the Discharge Flow in a Small Hydropower Station without Hydrological Data Based on SWAT Model

Xie

Zhu

2022

Water

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The availability of hydrological data for small hydropower plants is an important prerequisite for reservoir scheduling, reservoir flood control and integrated water resources. To address the problem of a lack of hydrological data in small hydropower plants, this paper proposes a method to predict the power generation flow of small hydropower stations without hydrological data using the Soil and Water Assessment Tool model (SWAT) when the traditional data-driven methods cannot study the problem of power generation flow prediction in small hydropower stations well. The method can use gridded meteorological data as the input of the model to solve the problem of small hydropower stations without meteorological data. The problem that small hydropower plants without hydrological data cannot calibrate the hydrological model is solved by calculating the generation flow through the output of small hydropower station and by using the similarity analysis method to migrate the generation flow of similar small hydropower stations. The model was tested in a watershed in southwest China to demonstrate the effectiveness of the proposed method. The results show that the coefficient of determination between the predicted and measured values of small hydropower stations without information is about 0.84, which achieves a better prediction.

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Section: Swat Model Calibration and Results Analysismentioning

confidence: 99%

Prediction of the Discharge Flow in a Small Hydropower Station without Hydrological Data Based on SWAT Model

Xie

Zhu

2022

Water

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“…In this study, the calibration period was from 2009 to 2013, while data from 2014 to 2018 were used for validation. Five warm-up years were used in the model initialization, as suggested by Tudose et al [52], and the investigation was carried out over 10 years. Since the preset parameters for Napier grass plantation did not exist in the original SWAT model, a parameter set for predicting Napier grass crop yield must be developed.…”

Section: Napier Grass Plantation Cases and Calculation Settingmentioning

confidence: 99%

Multi-Disciplinary Assessment of Napier Grass Plantation on Local Energetic, Environmental and Socioeconomic Industries: A Watershed-Scale Study in Southern Thailand

et al. 2021

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Napier grass is an energy crop that is promising for future power generation. Since Napier grass has never been planted extensively, it is important to understand the impacts of Napier grass plantations on local energetic, environmental, and socioeconomic features. In this study, the soil and water assessment tool (SWAT) model was employed to investigate the impacts of Napier grass plantation on runoff, sediment, and nitrate loads in Songkhla Lake Basin (SLB), southern Thailand. Historical data, collected between 2009 and 2018 from the U-tapao gaging station located in SLB were used to calibrate and validate the model in terms of precipitation, streamflow, and sediment. The simulated precipitation, streamflow, and sediment showed agreement with observed data, with the coefficients of determination being 0.791, 0.900, and 0.997, respectively. Subsequently, the SWAT model was applied to evaluate the impact of land use change from the baseline case to Napier grass plantation cases in abandoned areas with four different nitrogen fertilizer application levels. The results revealed that planting Napier grass decreased the average surface runoff and sediment in the watershed. A multidisciplinary assessment supporting future decision making was conducted using the results obtained from the SWAT model; these showed that Napier grass will provide enhanced benefits to hydrology and water quality when nitrogen fertilizers of 0 and 125 kgN ha−1 were applied. On the other hand, the benefits to the energy supply, farmer’s income, and CO2 reduction were highest when a nitrogen fertilization of 500 kgN ha−1 was applied. Nonetheless, planting Napier grass should be supported since it increases the energy supply and creates jobs while also reducing surface runoff, sediment yield, nitrate load, and CO2 emission.

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“…Topographic elements such as altitude, aspect and slope influence the availability of soil moisture, nutrients and daily insolation, which are determining factors for species suitability and composition [7]. Moreover, under a changing climate, those effects can be magnified [8,9] and can trigger modifications in the forest structure [10,11]. The topographic features that represent key drivers in defining forest structure and regeneration are still poorly understood [4,10,12].…”

Section: Introductionmentioning

confidence: 99%

Relation between Topography and Gap Characteristics in a Mixed Sessile Oak–Beech Old-Growth Forest

Tudose

Petritan

Toiu

et al. 2023

Forests

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The interest to assess the relationship between forest gap characteristics and topography features has been growing in the last decades. However, such an approach has not been studied in undisturbed mixed sessile oak–beech old-growth forests. Therefore, the present study carried out in one of the best-preserved sessile oak–beech old-growth forests in Europe, aims to assess the influence of topographic features (slope, altitude and aspect) on (i) some characteristics of canopies and expanded gaps (surface, diameter and perimeter) and (ii) the proportion of beech and sessile oak as bordering trees, gap fillers and gap makers. Through a complete gap survey on an area of 32 ha, 321 gaps were identified and mapped. The largest gaps and also the highest gap frequency (140) was found in the slope class (15.1–20°), while the gap frequency increased with altitude, with 99 gaps being recorded at 601–650 m a.s.l. The size and perimeter of the canopy and expanded gaps, as well as the number of gap makers, were negatively related to the slope and altitude. The expanded gap to canopy gap size ratio decreased with the slope and was positively related to the altitude, while a significant negative decrease in gap filler density with altitude was encountered. The sessile oak participation ratio as bordering trees forming the gap increased not only with the altitude but also with the slope. The topography plays an important role in the formation of gaps as well as in the characteristics of the future stand. This study provides valuable insights into the relationship between canopy gap characteristics and topography, which is useful information for forest owners that pursue the design of forest management toward nature-based solutions.

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SWAT Model Adaptability to a Small Mountainous Forested Watershed in Central Romania

Cited by 13 publications

References 79 publications

Prediction of the Discharge Flow in a Small Hydropower Station without Hydrological Data Based on SWAT Model

Prediction of the Discharge Flow in a Small Hydropower Station without Hydrological Data Based on SWAT Model

Multi-Disciplinary Assessment of Napier Grass Plantation on Local Energetic, Environmental and Socioeconomic Industries: A Watershed-Scale Study in Southern Thailand

Relation between Topography and Gap Characteristics in a Mixed Sessile Oak–Beech Old-Growth Forest

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