Integrating hybrid runoff generation mechanism into variable infiltration capacity model to facilitate hydrological simulations

Shen, Youjiang; Liu, Dedi; Yin, Jiabo; Xiong, Lihua; Liu, Pan

doi:10.1007/s00477-020-01878-x

Cited by 10 publications

(3 citation statements)

References 55 publications

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“…Water that falls in these regions may be of little use for crop plants because the amount is too small to penetrate the soil suffi ciently, or it may run through a porous soil too quickly, or it may run off too quickly [23]. Short rainfall duration with high intensity and poor surface vegetation coverage have aggravated rapid fl ooding in semi arid regions [38,39]. Moreover, water bodies in arid and semi-arid regions like rivers, lakes and wells may have problems of quality, especially the presence of excess minerals; use of this water bodies for irrigation might lead to the accumulation of salts in the soil resulting in alkalinity or salinity, which might then limit crop production [23].…”

Section: Principal Arid Regions Of the Worldmentioning

confidence: 99%

Agricultural production system in arid and semi-arid regions

Begizew¹

2021

J Agric Sc Food Technol

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The arid and semi-arid regions comprise more than forty present of the Earth's land surface on which a large number of people situated and largely engaged in agriculture to meet their basic needs. However, agriculture in these regions are highly infl uenced by several factors including water limitation, extreme heat, frequent drought, bared and marginal soil, vulnerable topography for natural hazards, erosive rain and wind. In order to cope with these challenges a number of essential scientifi c investigation and cultural practices have continuously released, modifi ed and recommended to sustain agriculture production in these regions. Some of these indispensable investigation and practice included that soil and water conservation, rain water harvesting and supplementary irrigation, use of stress tolerant crops and integrating of diverse farming system. So in this review it is attempted to discuss several points concerning arid and semi-arid land agricultural constraints and management action carried out to solve such constraints.

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Section: Principal Arid Regions Of the Worldmentioning

confidence: 99%

Agricultural production system in arid and semi-arid regions

Begizew¹

2021

J Agric Sc Food Technol

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“…A hybrid runoff generation process pattern comprised of multiple mechanisms can often happen in semi-arid, semi-humid, and mountainous watersheds due to the heterogeneity of meteorological factors and underlying surface conditions (i.e., rainfall, land covers, soil types, etc.) [1][2][3][4]. Runoff generated by the integration of the three components, including the subsurface stormflow runoff, saturation-excess runoff, and infiltration-excess runoff generation, is known as hybrid runoff, which leads to rapid flood occurrences and high flood peak discharges, and thus makes hydrological forecast even more challenging [5,6].…”

Section: Introductionmentioning

confidence: 99%

Influences of the Runoff Partition Method on the Flexible Hybrid Runoff Generation Model for Flood Prediction

Yi,

Chen,

Yang

et al. 2023

Water

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The partition of surface runoff and infiltration is crucial in hydrologic modeling. To improve the flood prediction, we designed four strategies to explore the influences of the runoff partition method on the flexible hybrid runoff generation model. The runoff partition strategies consist of a hydrological model without the runoff partition module, a two-source runoff partition method, an improved two-source runoff partition method considering the heterogeneity of the subsurface topography and land cover, and a three-source runoff partition method. The Xin’anjiang hydrological model was used as the modeling framework to simulate a six-hourly stream flow for the Xun River watershed in Shaanxi Province, China. And the saturation-excess runoff generation and infiltration-excess runoff generation mechanisms were combined to construct the flexible hybrid runoff generation model. The performances of the four strategies were compared and analyzed based on the continuous flow discharge as well as the flood events. The runoff components analysis method was used to test the model’s conformity with the reality of the watershed. The results showed that the three-source runoff partition method was not applicable to the flexible hybrid runoff generation model because it overestimated the surface runoff and almost ignored the subsurface stormflow runoff. The improved two-source runoff partition method outperformed the others as it considered the heterogeneity of the watershed.

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“…2011;Li et al 2014). Rapid flooding is prone to occur in these regions owing to the short rainfall duration, high intensity, and poor surface vegetation coverage characteristic of these areas (Burns et al 2001;Shen et al 2020). Meanwhile, the weak infiltration capacity and shallow soil infiltration layer in semi-arid regions can cause substantial variations in the surface soil water content, leading to the alternating dominance of the saturation-and infiltration-excess runoff mechanisms (Buda et al 2009;.…”

Section: Introductionmentioning

confidence: 99%

Impact of rainfall spatiotemporal variability and model structures on flood simulation in semi-arid regions

Liu

et al. 2021

Stoch Environ Res Risk Assess

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The spatiotemporal heterogeneity in precipitation and underlying surfaces and hybrid runoff generation mechanism make hydrological modelling and forecasting in semiarid regions becoming a challenge work. Therefore, to provide a reference for the development of hydrological models in such regions, two nested hydrological experimental watersheds in semi-arid regions were selected for attribution analysis. Based on the concept of large-sample hydrology, Large-scale numerical simulation experiments were performed by constructing different spatial and temporal scale rainfall schemes and combining three hydrological models with different runoff generation mechanisms. Finally, the influences of the time step, station density, and model structure on the flood simulations in semi-arid regions were evaluated. The spatial interpolation technique was used simultaneously to describe the highdimensional complicated nonlinear relationships between the influencing factors and simulation results. The results show the following: ① the flood simulation accuracy was more sensitive to the time step than the spatial station density of the rainfall schemes and was highly dependent on the time step of the original observation data; and ② compared with the accuracy of the rainfall schemes, the model structure plays a dominant role in flood simulation accuracy. Thus, the hybrid model has significant potential for flood forecasting in semi-arid regions by combining different runoff generation mechanisms. ③ The spatial interpolation technique based on the k-nearest neighbour algorithm can construct a high-dimensional distribution of the influencing factors, yield high model simulation accuracy, and describe the complicated relationships among the time step, station density, model structure, and simulations.

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Integrating hybrid runoff generation mechanism into variable infiltration capacity model to facilitate hydrological simulations

Cited by 10 publications

References 55 publications

Agricultural production system in arid and semi-arid regions

Agricultural production system in arid and semi-arid regions

Influences of the Runoff Partition Method on the Flexible Hybrid Runoff Generation Model for Flood Prediction

Impact of rainfall spatiotemporal variability and model structures on flood simulation in semi-arid regions

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