Application of a tank model to assess the flood-control function of a terraced paddy field

Chen, Shih-Kai; Chen, Rong‐Song; Yang, Tzung-Ying

doi:10.1080/02626667.2013.822642

Cited by 30 publications

(12 citation statements)

References 17 publications

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“…Thus, parameter calibration can be challenging, especially when streamflow observations are limited [36,37]. The models have been widely used in East Asia, including Korea, Japan, and Taiwan, and studies have demonstrated their accuracy and performance in applications for humid and mountainous watersheds [8,9,17,38,39].…”

Section: Introductionmentioning

confidence: 99%

Regionalization of a Rainfall-Runoff Model: Limitations and Potentials

Song

Her

Suh

et al. 2019

Water

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Regionalized lumped rainfall-runoff (RR) models have been widely employed as a means of predicting the streamflow of an ungauged watershed because of their simple yet effective simulation strategies. Parameter regionalization techniques relate the parameter values of a model calibrated to the observations of gauged watersheds to the geohydrological characteristics of the watersheds. Thus, the accuracy of regionalized models is dependent on the calibration processes, as well as the structure of the model used and the quality of the measurements. In this study, we have discussed the potentials and limitations of hydrological model parameter regionalization to provide practical guidance for hydrological modeling of ungauged watersheds. This study used a Tank model as an example model and calibrated its parameters to streamflow observed at the outlets of 39 gauged watersheds. Multiple regression analysis identified the statistical relationships between calibrated parameter values and nine watershed characteristics. The newly developed regional models provided acceptable accuracy in predicting streamflow, demonstrating the potential of the parameter regionalization method. However, uncertainty associated with parameter calibration processes was found to be large enough to affect the accuracy of regionalization. This study demonstrated the importance of objective function selection of the RR model regionalization.

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Section: Introductionmentioning

confidence: 99%

Regionalization of a Rainfall-Runoff Model: Limitations and Potentials

Song

Her

Suh

et al. 2019

Water

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“…The conceptual Tank model was adopted to simulate the rainfall-runoff processes, thus providing the behavior of rainwater in surface runoff, soil infiltration, and seepage [33][34][35]. The Tank model describes the amount of water storage in a watershed with a series of tanks with the outlets on the side and bottom of the tanks [36].…”

Section: Hydrological Modelmentioning

confidence: 99%

Modeling Sediment Yields and Stream Stability Due to Sediment-Related Disaster in Shihmen Reservoir Watershed in Taiwan

Chiu

Lee

Wang

et al. 2019

Water

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Accurate and reliable estimates of sediment yields from a watershed and identification of unstable stream reaches due to sediment-related disaster are crucial for watershed management, disaster prevention, and hazard mitigation purposes. In this study, we added hydrodynamic and sediment transport modules in a recently developed model to estimate sediment yields and identify the unstable stream reaches in a large-scale watershed (> 100km2). The calibrated and verified models can well reproduce the flow discharge and sediment discharge at the study site, the Shihmen Reservoir Watershed in Taiwan, during several typhoon events. For the scenario applications, the results revealed that the contribution (> 96%) of landslides on sediment supply is much more significant than compared to soil erosion (< 4%). The sediment contribution from the upstream of the hydrological station-Yufeng is approximately 36–55% of the total sediment supply for the rainfall events of 25, 50, 100, and 200 years return period. It also indicates that 22–52% of sediment still remain at foot of the slope and the streams, which become a potential source for sediment hazards in the future. Combining with the bed erosion and deposition depths, flow-induced shear stress from the SRH-2D model, and probability of slope failure within 250 m of stream reaches, the relatively stability of stream reaches can be identified. The results could provide the water resource authorities for reference to take precautionary measures in advance on the stream reaches with high-degree instability.

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“…However, these terraces can be used as alternatives when bench terrace construction is not convenient on steep slopes (Zheng and Zhang, 2001;He et al, 2008). The benefits of terracing on the control of water erosion are also influenced by the size and shape of the platform, the height of the embankment, and the outlet within the bund (Dorren and Rey, 2004;Chen et al, 2014). The dimensions of level terraces are determined based on the surface runoff volume, and the sizes of sloped and zig terraces are based on the maximum runoff flow rate.…”

Section: Sediment Reductionmentioning

confidence: 99%

Effects of terracing practices on water erosion control in China: A meta-analysis

Chen

Wei

Chen

2017

Earth-Science Reviews

182

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A B S T R A C TTerracing has long been considered a strategy for soil and water conservation in many mountainous regions of the world. However, the effectiveness of terracing is limited by many factors, such as climate, soil properties, topography, land use, culture, demography and socioeconomic status. The aim of this critical review is to evaluate the roles of terracing on water erosion control in China. A meta-analysis of 601 runoff and 636 sediment observations involving a diversity of terrace structures was conducted. These 1237 observations involved level terraces, slope-separated terraces, slope terraces, zig terraces, fanya juu terraces and half-moon terraces, wide geographical locations within China, a diversity of land uses from forests to bare land, and a slopes ranging from 3°to 35°. The results confirmed that terracing significantly and positively affected water erosion control. In terms of different terrace structures, bench terraces were superior with respect to runoff and sediment reductions. Land use also played a crucial role in the efficiency of erosion control; terraces associated with tree crops and forests conserved the greatest amount of soil and water. In addition, a significant positive correlation between slope gradient (3°-15°and 16°-35°) and the effect of terracing on water erosion control was observed with the greatest decreases in water erosion occurred at slopes of 26°-35°and 11°-15°. This study revealed the effectiveness and variations of terracing with respect to water erosion control at the national scale and can serve as a scientific basis for land managers and decision makers. However with increasing urbanization, terrace abandonment increases as does the loss of place-based knowledge regarding terrace construction and maintenance.

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Application of a tank model to assess the flood-control function of a terraced paddy field

Cited by 30 publications

References 17 publications

Regionalization of a Rainfall-Runoff Model: Limitations and Potentials

Regionalization of a Rainfall-Runoff Model: Limitations and Potentials

Modeling Sediment Yields and Stream Stability Due to Sediment-Related Disaster in Shihmen Reservoir Watershed in Taiwan

Effects of terracing practices on water erosion control in China: A meta-analysis

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